| Abiqua Drinking Gourd Hosta | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Abyssinian Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Açaí Palm | Bright indirect light (just back from a sunny window) | Keep soil constantly moist; water whenever the surface starts to dry, often every 2-4 days | Mildly toxic to pets |
| Accent Scarlet Busy Lizzie | Medium indirect light (a couple of metres from a window) | Keep the compost evenly moist; typically water every 1-3 days in warm weather as plants wilt quickly in dry conditions | Mildly toxic to pets |
| Acer capillipes | Bright indirect light (just back from a sunny window) | Water deeply weekly while establishing; supplement in summer droughts | Pet-safe |
| Acer japonicum 'Aconitifolium' | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water deeply in dry spells | Pet-safe |
| Acer palmatum 'Atropurpureum' | Bright indirect light (just back from a sunny window) | Keep evenly moist; water deeply through dry weather | Pet-safe |
| Acer palmatum 'Butterfly' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry; keep evenly moist, more often in pots and heat | Pet-safe |
| Acer palmatum 'Dissectum' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry; keep evenly moist, more often in pots and heat | Pet-safe |
| Acer palmatum 'Garnet' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry; keep evenly moist, more often in pots and heat | Pet-safe |
| Acer palmatum 'Orangeola' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry; keep evenly moist, more often in containers and heat | Pet-safe |
| Achachairu | Bright indirect light (just back from a sunny window) | Water abundantly and consistently year-round; do not allow to dry out. | Mildly toxic to pets |
| Achimenes | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, every 4-6 days in summer | Mildly toxic to pets |
| Achimenes 'Cascade Violet Night' | Bright indirect light (just back from a sunny window) | Keep evenly moist in growth, roughly every 4-6 days | Pet-safe |
| Achimenes 'Peach Blossom' | Bright indirect light (just back from a sunny window) | Keep evenly moist in growth, roughly every 4-6 days | Pet-safe |
| Achimenes 'Tarantella' | Bright indirect light (just back from a sunny window) | Keep evenly moist in growth, roughly every 4-6 days | Pet-safe |
| Achimenes erecta | Bright indirect light (just back from a sunny window) | Keep evenly moist in growth, roughly every 4-6 days | Pet-safe |
| Achimenes grandiflora | Bright indirect light (just back from a sunny window) | Keep evenly moist while in growth, roughly every 4-6 days | Pet-safe |
| Acorus gramineus | Bright indirect light (just back from a sunny window) | Keep soil constantly moist to wet; never allow to dry out | Mildly toxic to pets |
| Acorus gramineus 'Variegatus' | Bright indirect light (just back from a sunny window) | Keep soil constantly moist to wet at all times | Mildly toxic to pets |
| Adiantum venustum | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil begins to dry, roughly every 4-6 days | Pet-safe |
| Adolphe Audusson camellia | Bright indirect light (just back from a sunny window) | Regular; keep consistently moist, especially during bud set | Mildly toxic to pets |
| Adolphe Audusson Camellia | Bright indirect light (just back from a sunny window) | Every 5-7 days in the growing season; keep consistently moist but not waterlogged | Pet-safe |
| Adriatic Bellflower | Bright indirect light (just back from a sunny window) | Weekly during spring and summer; minimal in winter | Pet-safe |
| Adromischus Cooperi | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Mildly toxic to pets |
| Adromischus Cristatus | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in growth | Mildly toxic to pets |
| Adromischus Hemisphaericus | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in growth | Mildly toxic to pets |
| Adromischus Maculatus | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Mildly toxic to pets |
| Adromischus Marianiae | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Mildly toxic to pets |
| Adromischus Trigynus | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Mildly toxic to pets |
| Aechmea 'Blue Rain' | Bright indirect light (just back from a sunny window) | Keep the central cup topped up; flush weekly and keep the mix nearly dry | Pet-safe |
| Aechmea 'Foster's Favorite' | Bright indirect light (just back from a sunny window) | Keep the central cup topped up; flush and refill weekly | Pet-safe |
| Aechmea chantinii | Bright indirect light (just back from a sunny window) | Keep the central cup filled; flush weekly and keep the mix nearly dry | Pet-safe |
| Aechmea cylindrata | Bright indirect light (just back from a sunny window) | Keep the central cup topped up; flush and refill every 1-2 weeks | Pet-safe |
| Aechmea gamosepala | Bright indirect light (just back from a sunny window) | Keep the central cup filled; refresh weekly and water mix when top 2-3 cm dry | Pet-safe |
| Aechmea nudicaulis | Bright indirect light (just back from a sunny window) | Keep the central cup filled; flush and refill every 1-2 weeks | Pet-safe |
| Aechmea orlandiana | Bright indirect light (just back from a sunny window) | Keep the central cup filled; flush weekly | Pet-safe |
| Aechmea recurvata | Bright indirect light (just back from a sunny window) | Keep the small cup filled; refresh weekly and water mix when top few cm dry | Pet-safe |
| Aeonium 'Sunburst' | Bright indirect light (just back from a sunny window) | When the soil is dry in winter growth, sparingly during summer dormancy | Mildly toxic to pets |
| Aeonium Canariense | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is fully dry, roughly every 10-14 days in active growth | Mildly toxic to pets |
| Aeonium Castello-Paivae 'Variegata' | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in active growth | Mildly toxic to pets |
| Aeonium Decorum | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in active growth | Mildly toxic to pets |
| Aeonium Haworthii | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in active growth | Mildly toxic to pets |
| Aeonium Simsii | Bright indirect light (just back from a sunny window) | When the top few centimetres are dry, about every 7-12 days in active growth | Mildly toxic to pets |
| Aeonium Sunburst | Bright indirect light (just back from a sunny window) | When the top few centimetres of soil are dry, about weekly in active growth, sparingly in summer dormancy | Mildly toxic to pets |
| Aeonium Tabuliforme | Bright indirect light (just back from a sunny window) | When the soil is fully dry, about every 10-14 days in active growth | Mildly toxic to pets |
| Aeonium Velour | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is fully dry, roughly every 10-14 days in active growth | Mildly toxic to pets |
| Aerangis biloba | Bright indirect light (just back from a sunny window) | Every 1-3 days when mounted; every 3-5 days in a small basket, kept lightly moist | Pet-safe |
| Aerangis fastuosa | Medium indirect light (a couple of metres from a window) | Water every 1-3 days, keeping the roots consistently moist | Pet-safe |
| Aerangis luteoalba | Bright indirect light (just back from a sunny window) | Every 1-3 days when mounted; every 3-5 days in a small basket, keeping it lightly moist | Pet-safe |
| Aerangis rhodosticta | Bright indirect light (just back from a sunny window) | Mounted plants every 1-2 days in summer, every 2-4 days in winter; potted plants when the surface bark just begins to dry | Pet-safe |
| Aeschynanthus 'Black Pagoda' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-9 days in growth | Pet-safe |
| Aeschynanthus 'Mona Lisa' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Aeschynanthus 'Rasta' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-9 days in growth | Pet-safe |
| Aeschynanthus lobbianus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Aeschynanthus marmoratus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-9 days in growth | Pet-safe |
| Aeschynanthus pulcher | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Aeschynanthus radicans 'Curly Q' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| Aeschynanthus speciosus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 4-8 days in growth | Pet-safe |
| Aeschynanthus tricolor | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-9 days | Pet-safe |
| Aesculifolia Rodgersia | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; water deeply 1-2 times weekly, more in heat | Mildly toxic to pets |
| Affinis Taro | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water when the top 1-2 cm of soil dries, roughly every 4-7 days | Toxic to pets |
| African Chain Fern | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil feels barely moist, roughly every 5-8 days in growing season | Pet-safe |
| African Crossandra | Bright indirect light (just back from a sunny window) | Every 5–7 days in the growing season, reducing to every 10–14 days in winter | Pet-safe |
| African Fern Pine | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| African Kedrostis | Bright indirect light (just back from a sunny window) | Every 7–10 days in summer; once a month or less in winter | Mildly toxic to pets |
| African Liana Sundew | Bright indirect light (just back from a sunny window) | Water regularly to keep the substrate evenly moist; reduce slightly during the dry-season phase if replicating natural conditions | Mildly toxic to pets |
| African Milk Tree | Bright indirect light (just back from a sunny window) | Every 1-2 weeks in spring/summer; roughly every 3-4 weeks in winter | Toxic to pets |
| African Spear Plant | Medium indirect light (a couple of metres from a window) | When the soil is completely dry, roughly every 2-4 weeks in summer and every 4-6 weeks in winter | Toxic to pets |
| African Star Apple | Bright indirect light (just back from a sunny window) | Every 5–7 days; maintain consistent moisture without waterlogging | Mildly toxic to pets |
| African violet | Medium indirect light (a couple of metres from a window) | When the top of the soil feels just dry, every 5-7 days | Pet-safe |
| African Violet 'Blue Nile' | Bright indirect light (just back from a sunny window) | When the top of the soil feels barely dry, roughly every 5-7 days | Pet-safe |
| African Violet 'Optimara EverFloris' | Bright indirect light (just back from a sunny window) | When the top of the soil feels just dry, about every 5-7 days | Pet-safe |
| African Violet 'Optimara Little Maya' | Bright indirect light (just back from a sunny window) | When the top of the soil feels barely dry, roughly every 5-7 days | Pet-safe |
| African Violet 'Optimara' | Bright indirect light (just back from a sunny window) | When the top of the soil feels barely dry, roughly every 5-7 days | Pet-safe |
| African Violet 'Rob's Boolaroo' | Bright indirect light (just back from a sunny window) | When the top of the soil feels barely dry, roughly every 5-7 days | Pet-safe |
| African violet streptocarpus | Bright indirect light (just back from a sunny window) | Every 7–10 days, allowing the top inch of soil to dry between waterings | Pet-safe |
| African Wild Ginger | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry during the growing season, approximately every 7-10 days; very little during dormancy | Mildly toxic to pets |
| African Yellowwood | Bright indirect light (just back from a sunny window) | When the top few cm of soil dry, roughly weekly while establishing | Toxic to pets |
| Afzel's Nephthytis | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Agave attenuata | Bright indirect light (just back from a sunny window) | When the top few centimetres of soil are dry, roughly every 1-2 weeks in summer | Mildly toxic to pets |
| Agave attenuata 'Boutin Blue' | Bright indirect light (just back from a sunny window) | When the top of the soil is dry, every 1-2 weeks in summer; sparingly in winter | Toxic to pets |
| Agave bracteosa | Bright indirect light (just back from a sunny window) | When the soil is dry, every 1-2 weeks in summer; sparingly in winter | Toxic to pets |
| Agave mitis | Bright indirect light (just back from a sunny window) | When the soil is fully dry, about every 2 weeks in summer and monthly in winter | Toxic to pets |
| Aglaonema 'Creta' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema 'First Diamond' | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema 'Lady Valentine' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema 'Siam Aurora' (Red Chinese Evergreen) | Medium indirect light (a couple of metres from a window) | Every 7-10 days; when the top 1-2 inches of soil are dry | Toxic to pets |
| Aglaonema 'Sparkling Sarah' | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema (Chinese Evergreen) | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm (1 inch) of compost is dry, roughly every 7-10 days in growth | Toxic to pets |
| Aglaonema Anyamanee | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-12 days | Toxic to pets |
| Aglaonema Burmese Evergreen | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema Chocolate | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema Cutlass | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, roughly every 7-12 days | Toxic to pets |
| Aglaonema Dud Unyamanee | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema Firecracker | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema Gemini | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema Golden Bay | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema Harlequin | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema Legacy | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-12 days | Toxic to pets |
| Aglaonema Malay Beauty | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema Osaka | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema Pictum Bicolor | Medium indirect light (a couple of metres from a window) | When top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Aglaonema Pictum Tricolor | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (1 in) of mix dries out | Toxic to pets |
| Aglaonema Pink Beauty | Medium indirect light (a couple of metres from a window) | When top 3-5 cm of soil is dry, roughly every 7-12 days | Toxic to pets |
| Aglaonema Pink Dalmatian | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema Prosperity | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema Red | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, roughly every 7-12 days | Toxic to pets |
| Aglaonema Rotundum | Medium indirect light (a couple of metres from a window) | When top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Aglaonema Spring Snow | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema Suksom Jaipong | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-12 days | Toxic to pets |
| Aglaonema Super White | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema Unyamanee | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema White Rajah | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-12 days | Toxic to pets |
| Aglaonema Widuri | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Aglaonema Wishes | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Air plant | Bright indirect light (just back from a sunny window) | Soak weekly for 20-30 minutes | Pet-safe |
| Aizoon Rosularia | Bright indirect light (just back from a sunny window) | Every 3–4 weeks in spring and summer; rarely in winter | Pet-safe |
| Akebia quinata | Bright indirect light (just back from a sunny window) | When the top 4-5 cm of soil dries, about every 7-10 days while establishing | Mildly toxic to pets |
| Akebia trifoliata | Bright indirect light (just back from a sunny window) | When the top 4-5 cm of soil dries, about every 7-10 days while establishing | Mildly toxic to pets |
| Alabama Lip Fern | Medium indirect light (a couple of metres from a window) | every 2-3 weeks | Mildly toxic to pets |
| Albany Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep the mix consistently moist year-round; never let it dry out | Mildly toxic to pets |
| Albany Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep substrate moist but not waterlogged; water when surface begins to lighten | Mildly toxic to pets |
| Alcantarea imperialis | Bright indirect light (just back from a sunny window) | Keep the central tank filled; water the mix when its top 4-5 cm is dry | Pet-safe |
| Alcantarea odorata | Bright indirect light (just back from a sunny window) | Keep the central tank filled; water the mix when its top 4-5 cm is dry | Pet-safe |
| Alchemilla mollis | Bright indirect light (just back from a sunny window) | Water in dry spells; established plants are drought-tolerant and need watering only occasionally | Mildly toxic to pets |
| Alerce | Bright indirect light (just back from a sunny window) | Keep consistently moist at all times; water deeply during any dry period and never allow drought | Mildly toxic to pets |
| Aleutian Mountain Heath | Bright indirect light (just back from a sunny window) | Keep consistently moist; water whenever the top 2–3 cm of soil begins to dry. | Mildly toxic to pets |
| Alexandra Palm | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top 2-3 cm of soil is dry, roughly every 4-7 days in growth | Mildly toxic to pets |
| Alexandrae Brake Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is barely moist, roughly every 7 days in summer | Pet-safe |
| Alii Fig | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| all gold Japanese forest grass | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist; water 1-2 times weekly, more in dry or warm spells | Mildly toxic to pets |
| Allioni's Primrose | Bright indirect light (just back from a sunny window) | Moderately during spring and summer; very sparingly in winter | Toxic to pets |
| Almost-round Cape Primrose | Bright indirect light (just back from a sunny window) | Every 7–14 days in the growing season; sparingly in winter | Pet-safe |
| Alocasia | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, every 5-7 days | Toxic to pets |
| Alocasia 'Pink Dragon' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (1 inch) of soil dries out — roughly every 5-7 days in summer, every 10-14 days in winter | Toxic to pets |
| Alocasia Amazonica | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-7 days in growth | Toxic to pets |
| Alocasia Amazonica Variegata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days in growth | Toxic to pets |
| Alocasia Baginda | Bright indirect light (just back from a sunny window) | When the top half of the mix is dry, about every 6-9 days | Toxic to pets |
| Alocasia Bambino | Bright indirect light (just back from a sunny window) | Every 5-10 days in the growing season; less in winter | Toxic to pets |
| Alocasia Bambino Arrow | Bright indirect light (just back from a sunny window) | When the top 2 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Alocasia Black Velvet | Bright indirect light (just back from a sunny window) | When top 2-5cm of soil dries, roughly weekly in summer | Toxic to pets |
| Alocasia Brancifolia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days in growth | Toxic to pets |
| Alocasia Brisbanensis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-8 days in growth | Toxic to pets |
| Alocasia Calidora | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 4-7 days in growth | Toxic to pets |
| Alocasia Chantrieri | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-9 days in growth | Toxic to pets |
| Alocasia Clypeolata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days in growth | Toxic to pets |
| Alocasia Cucullata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-8 days in growth | Toxic to pets |
| Alocasia Cuprea (Red Secret) | Bright indirect light (just back from a sunny window) | When the top 1-2 inches of soil are dry, roughly 1-2 times weekly in spring and summer | Toxic to pets |
| Alocasia Cuprea Red Secret | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Alocasia Dragon Scale | Bright indirect light (just back from a sunny window) | Roughly every 5-10 days in growth; less in winter | Toxic to pets |
| Alocasia Frydek (Green Velvet) | Bright indirect light (just back from a sunny window) | When the top third of the soil dries; roughly weekly in summer, fortnightly in winter | Toxic to pets |
| Alocasia Gageana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Alocasia Heterophylla | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-9 days in growth | Toxic to pets |
| Alocasia Heterophylla Spirit | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Alocasia Hilo Beauty | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in active growth | Toxic to pets |
| Alocasia Imperial Red | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Alocasia Infernalis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of medium is dry, roughly every 5-7 days | Toxic to pets |
| Alocasia Ivory Coast | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-7 days in growth | Toxic to pets |
| Alocasia Jacklyn | Bright indirect light (just back from a sunny window) | Roughly every 5-9 days in active growth; less in winter | Toxic to pets |
| Alocasia Lauterbachiana (Purple Sword) | Bright indirect light (just back from a sunny window) | When the top 25-33% of the soil is dry, roughly weekly in summer and less in winter | Toxic to pets |
| Alocasia Longiloba | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days in growth | Toxic to pets |
| Alocasia Low Rider | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil dries, about every 5-7 days in summer | Toxic to pets |
| Alocasia Macrorrhizos Giant Upright | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil dries, often every 4-6 days in active growth | Toxic to pets |
| Alocasia Macrorrhizos Variegata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 6-10 days in growth | Toxic to pets |
| Alocasia Maharani (Grey Dragon) | Bright indirect light (just back from a sunny window) | Roughly every 5-7 days in spring and summer; about every 1-2 weeks in winter | Toxic to pets |
| Alocasia Melo | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of medium is dry, roughly every 5-8 days | Toxic to pets |
| Alocasia Micholitziana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Alocasia Midrib | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 5-8 days in growth | Toxic to pets |
| Alocasia Morocco | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Alocasia Navicularis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Alocasia Nebula | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days in growth | Toxic to pets |
| Alocasia Odora | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 4-7 days in growth | Toxic to pets |
| Alocasia Platyphylla | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 4-7 days in growth | Toxic to pets |
| Alocasia Plumbea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Alocasia Polly | Bright indirect light (just back from a sunny window) | When the top 2-3 cm is dry, roughly every 5-7 days in summer and every 10-14 days in winter | Toxic to pets |
| Alocasia Portodora | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Alocasia Portora | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 4-7 days in growth | Toxic to pets |
| Alocasia Princeps | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 5-8 days in growth | Toxic to pets |
| Alocasia Regal Shield | Bright indirect light (just back from a sunny window) | When the top 2 inches (5 cm) of soil feel dry, roughly weekly in summer and less in winter | Toxic to pets |
| Alocasia Regal Shields | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 5-9 days in growth | Toxic to pets |
| Alocasia Reginae | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Alocasia Reginula | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Alocasia Reversa | Bright indirect light (just back from a sunny window) | When the top 5 cm of soil is dry, roughly every 6-9 days in growth | Toxic to pets |
| Alocasia Sanderiana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Alocasia Sarawakensis | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 5-8 days in growth | Toxic to pets |
| Alocasia Sarian | Bright indirect light (just back from a sunny window) | Roughly weekly in spring/summer; water when the top 25-50% of the soil has dried | Toxic to pets |
| Alocasia Scalprum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of medium is dry, roughly every 5-7 days | Toxic to pets |
| Alocasia Serendipity | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-8 days in growth | Toxic to pets |
| Alocasia Silver Dragon | Bright indirect light (just back from a sunny window) | When the top 1-2 cm (about half an inch to an inch) of soil dries out, often every 5-10 days indoors | Toxic to pets |
| Alocasia Sinuata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of medium is dry, roughly every 5-7 days | Toxic to pets |
| Alocasia Stingray | Bright indirect light (just back from a sunny window) | Roughly every 5-9 days in spring and summer; reduce to about every 2-3 weeks in winter. | Toxic to pets |
| Alocasia Sulawesi | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Alocasia Sumo | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 5-8 days in growth | Toxic to pets |
| Alocasia Tandurusa | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Alocasia Tiny Dancer | Bright indirect light (just back from a sunny window) | Every 1-2 weeks | Toxic to pets |
| Alocasia Tiny Dancers | Bright indirect light (just back from a sunny window) | When the top 2 cm of mix is dry, roughly every 4-7 days in growth | Toxic to pets |
| Alocasia Triangularis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days in growth | Toxic to pets |
| Alocasia Wentii (Hardy Elephant Ear) | Bright indirect light (just back from a sunny window) | Roughly every 5-10 days; water when the top 2-3 cm (1 inch) of mix dries | Toxic to pets |
| Alocasia Wollongong | Bright indirect light (just back from a sunny window) | Water when the top 2-3 cm of mix is dry, roughly every 5-9 days | Toxic to pets |
| Alocasia Zebrina | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 7-10 days in growth | Toxic to pets |
| Alocasia Zebrina Reticulata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Alocasia Zebrina Tigrina | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Aloe 'Doran Black' | Bright indirect light (just back from a sunny window) | When the soil is dry, roughly every 1-2 weeks in summer and every 3-4 weeks in winter | Toxic to pets |
| Aloe 'Firebird' | Bright indirect light (just back from a sunny window) | When the soil is dry, roughly every 1-2 weeks in summer and every 3-4 weeks in winter | Toxic to pets |
| Aloe Descoingsii | Bright indirect light (just back from a sunny window) | When the small pot dries out, about every 1-2 weeks in summer | Toxic to pets |
| Aloe Haworthioides | Bright indirect light (just back from a sunny window) | When the soil is fully dry, about every 1-2 weeks in growth | Toxic to pets |
| Aloe Rauhii | Bright indirect light (just back from a sunny window) | When soil is dry, roughly every 2 weeks in growth | Toxic to pets |
| Alpine Azalea | Bright indirect light (just back from a sunny window) | Regular; keep soil moist | Mildly toxic to pets |
| Alpine Bartsia | Bright indirect light (just back from a sunny window) | Keep evenly moist; water regularly to prevent drying out | Mildly toxic to pets |
| Alpine Butterwort | Bright indirect light (just back from a sunny window) | Keep the medium constantly damp in growth via a shallow tray; reduce sharply when the winter resting bud forms | Mildly toxic to pets |
| Alpine Campion | Bright indirect light (just back from a sunny window) | Low to moderate — water during dry spells; ensure good drainage | Mildly toxic to pets |
| Alpine Clematis | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 10-14 days in the growing season | Toxic to pets |
| Alpine Lady Fern | Medium indirect light (a couple of metres from a window) | 2–3 times per week; more frequently in warm weather | Pet-safe |
| Alpine Liverwort | Bright indirect light (just back from a sunny window) | Low to moderate — water when the top centimetre of soil dries | Mildly toxic to pets |
| Alpine Squill | Medium indirect light (a couple of metres from a window) | Water during growth; dry during summer dormancy | Toxic to pets |
| Alpine Water Fern | Medium indirect light (a couple of metres from a window) | When the top 1 cm of soil feels dry, roughly every 4-6 days in summer | Pet-safe |
| Alpine Woodsia | Medium indirect light (a couple of metres from a window) | every 1-2 weeks during the growing season | Mildly toxic to pets |
| Alpinia Zerumbet 'Variegata' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 3-6 days in warm growth | Mildly toxic to pets |
| Alsobia 'San Miguel' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Alsobia dianthiflora | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 4-7 days | Pet-safe |
| Alternanthera reineckii 'Mini' | Bright indirect light (just back from a sunny window) | Fully submerged; 30-50% aquarium water change weekly | Mildly toxic to pets |
| Alternanthera reineckii 'Rosaefolia' | Bright indirect light (just back from a sunny window) | Fully submerged; 30-50% aquarium water change weekly | Mildly toxic to pets |
| Aluminum Plant (Watermelon Pilea) | Bright indirect light (just back from a sunny window) | When the top quarter-inch of soil dries out (roughly weekly in summer) | Pet-safe |
| Amalia's Dragon Orchid | Medium indirect light (a couple of metres from a window) | Daily to every other day; medium must stay damp but not sodden | Pet-safe |
| Amaryllis | Bright indirect light (just back from a sunny window) | Sparingly until growth appears, then keep evenly moist | Toxic to pets |
| Amaryllis 'Apple Blossom' | Bright indirect light (just back from a sunny window) | Sparingly until growth starts, then when top 2-3 cm of soil is dry | Toxic to pets |
| Amaryllis 'Christmas Gift' | Bright indirect light (just back from a sunny window) | Sparingly until growth starts, then when top 2-3 cm of soil is dry | Toxic to pets |
| Amaryllis 'Minerva' | Bright indirect light (just back from a sunny window) | Sparingly until growth starts, then when top 2-3 cm of soil is dry | Toxic to pets |
| Amaryllis 'Papilio' | Bright indirect light (just back from a sunny window) | When top 2-3 cm of soil is dry, roughly every 7-10 days in growth | Toxic to pets |
| Amaryllis 'Picotee' | Bright indirect light (just back from a sunny window) | Sparingly until growth starts, then when top 2-3 cm of soil is dry | Toxic to pets |
| Amaryllis 'Red Lion' | Bright indirect light (just back from a sunny window) | Sparingly until growth starts, then when top 2-3 cm of soil is dry | Toxic to pets |
| Amazon Moonflower Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of substrate is dry, roughly every 7-10 days in the growing season; every 2-3 weeks in a cooler rest period | Pet-safe |
| Amazonian Traveller's Tree | Bright indirect light (just back from a sunny window) | Twice weekly or more in warm weather; reduce in cooler months | Mildly toxic to pets |
| American alumroot | Medium indirect light (a couple of metres from a window) | Once or twice per week; reduce in winter | Pet-safe |
| American Basswood | Bright indirect light (just back from a sunny window) | Weekly during establishment; less once mature | Pet-safe |
| American Bittersweet | Bright indirect light (just back from a sunny window) | Water deeply once a week during the first two growing seasons; established plants are drought-tolerant and need watering only during extended dry periods | Toxic to pets |
| American Climbing Fern | Medium indirect light (a couple of metres from a window) | Keep the soil consistently and evenly moist — never allow it to dry out between waterings | Mildly toxic to pets |
| American Holly | Bright indirect light (just back from a sunny window) | Weekly while establishing, then during dry spells | Toxic to pets |
| American Hornbeam | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil approaches dryness, often daily in summer | Mildly toxic to pets |
| American Parsley Fern | Bright indirect light (just back from a sunny window) | Keep consistently moist; never allow to fully dry out | Mildly toxic to pets |
| American Royal Fern | Medium indirect light (a couple of metres from a window) | Twice weekly or more; keep consistently moist | Pet-safe |
| American Turk's Cap Lily | Bright indirect light (just back from a sunny window) | Twice weekly; more in dry periods | Toxic to pets |
| American Wall Fern | Medium indirect light (a couple of metres from a window) | Every 7–10 days when in growth; every 2–3 weeks in winter | Pet-safe |
| American Wood Anemone | Medium indirect light (a couple of metres from a window) | Weekly during active spring growth; none during summer dormancy | Toxic to pets |
| Amethyst Porroglossum | Medium indirect light (a couple of metres from a window) | Daily if mounted; every 1–2 days if potted; do not dry out | Pet-safe |
| Amorphophallus abyssinicus | Bright indirect light (just back from a sunny window) | Keep evenly moist during active leaf growth, watering when the top 2-3 cm of soil dries; withhold water once the leaf yellows and the tuber goes dormant. | Toxic to pets |
| Amorphophallus decus-silvae | Bright indirect light (just back from a sunny window) | Keep evenly moist and never bone-dry in active growth; withhold once the leaf dies back for dormancy | Toxic to pets |
| Amorphophallus hewittii | Bright indirect light (just back from a sunny window) | Keep the soil consistently moist during active leaf growth; taper off sharply once the leaf yellows so the dormant tuber stays barely moist to dry. | Toxic to pets |
| Amorphophallus maximus | Bright indirect light (just back from a sunny window) | Keep evenly moist in active growth, letting the surface dry slightly; withhold once the leaf dies back | Toxic to pets |
| Amorphophallus prainii | Bright indirect light (just back from a sunny window) | Keep evenly moist while the leaf is active; withhold almost entirely once it dies back for dormancy | Toxic to pets |
| Amorphophallus variabilis | Bright indirect light (just back from a sunny window) | Keep evenly moist while in leaf, watering when the top 2-3 cm of soil dries; keep the dormant corm nearly dry | Toxic to pets |
| Amydrium Hainanense | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Amydrium medium | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 6-9 days in growth | Toxic to pets |
| Amydrium Medium Silver | Bright indirect light (just back from a sunny window) | Every 1-2 weeks; water when the top ~25% of the mix is dry | Toxic to pets |
| Amydrium zippelianum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 6-9 days in growth | Toxic to pets |
| Anadendrum Latifolium | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Mildly toxic to pets |
| Anadendrum Michaelii | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Anadendrum Montanum | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Mildly toxic to pets |
| Anaga Monanthes | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in spring and summer; every 4–6 weeks in winter | Mildly toxic to pets |
| Anchomanes difformis | Bright indirect light (just back from a sunny window) | Water freely in active growth keeping soil moist; keep nearly dry during dormancy | Mildly toxic to pets |
| Anchomanes giganteus | Bright indirect light (just back from a sunny window) | Water freely keeping soil moist in growth; keep nearly dry during dormancy | Mildly toxic to pets |
| Anderson's Holly Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Anderson's Holly Fern | Medium indirect light (a couple of metres from a window) | Twice weekly in the growing season, weekly in winter | Pet-safe |
| Andinum Staghorn Fern | Bright indirect light (just back from a sunny window) | Soak when the mount is light and nearly dry, roughly every 5-10 days | Pet-safe |
| Andre's Pitcairnia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Anemone × hybrida 'Honorine Jobert' | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water deeply weekly in dry spells, more in its first year | Toxic to pets |
| Anemone × hybrida 'Königin Charlotte' | Bright indirect light (just back from a sunny window) | Keep evenly moist; water deeply once a week in dry weather, more while establishing | Toxic to pets |
| Anemone × hybrida 'Pamina' | Bright indirect light (just back from a sunny window) | Keep evenly moist; deep weekly watering in dry weather, more while establishing | Toxic to pets |
| Anemone × hybrida 'September Charm' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry; keep evenly moist, especially while establishing | Toxic to pets |
| Anemone hupehensis 'Hadspen Abundance' | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water deeply weekly in dry spells and more during establishment | Toxic to pets |
| Angel Frost Masdevallia | Medium indirect light (a couple of metres from a window) | Daily in hot weather; every 2–3 days in spring and autumn | Pet-safe |
| Angel Wing Begonia | Bright indirect light (just back from a sunny window) | When the top 1-2 inches (2.5-5 cm) of soil feel dry | Toxic to pets |
| Angel Wing Begonia 'Lucerna' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Angel Wing Begonia 'Lucerna' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, about every 7-10 days | Toxic to pets |
| Angola Culcasia | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Angraecum distichum | Bright indirect light (just back from a sunny window) | Keep evenly moist; water roughly every 2-4 days when mounted, or when the bark surface just begins to dry | Pet-safe |
| Anguloa clowesii | Bright indirect light (just back from a sunny window) | Every 5-7 days in active summer growth; taper to roughly every 2-3 weeks once leaves yellow and drop | Mildly toxic to pets |
| Anise-scented Sage | Bright indirect light (just back from a sunny window) | Regular throughout the growing season | Pet-safe |
| Ann Folkard Cranesbill | Bright indirect light (just back from a sunny window) | Moderate; water during dry spells | Mildly toxic to pets |
| Anne Thomson Cranesbill | Bright indirect light (just back from a sunny window) | Moderate; water during dry spells | Mildly toxic to pets |
| Ant Plant | Bright indirect light (just back from a sunny window) | When the medium is nearly dry, roughly every 5-9 days | Mildly toxic to pets |
| Anthurium | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, every 5-7 days | Toxic to pets |
| Anthurium 'Ace of Spades' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of the mix is dry, roughly every 5-9 days | Toxic to pets |
| Anthurium 'Black Love' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-7 days | Toxic to pets |
| Anthurium 'Black Queen' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Anthurium 'Livium' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium 'Pterodactyl' | Bright indirect light (just back from a sunny window) | Roughly weekly; water when the top 2-5cm (top half) of the mix has dried | Toxic to pets |
| Anthurium amnicola | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Toxic to pets |
| Anthurium andraeanum 'Acropolis' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Alabama' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Baby Pink' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Anthurium andraeanum 'Baron' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Bianco' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Black Beauty' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Cheers' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Colonel' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Fantasia' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Fantasy Love' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Florida' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Kozohara' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Kozue' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Lila' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Midori' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Orange Hot' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Anthurium andraeanum 'Pacora' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Pierrot' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'President' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Purple Victory' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Roseum' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Roxane' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Roxanne' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Anthurium andraeanum 'Rubrum' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Shooting Star' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Sierra Madre' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days | Toxic to pets |
| Anthurium andraeanum 'Tropic Sunset' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Anthurium andraeanum 'Tropical' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days | Toxic to pets |
| Anthurium Andreanum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Toxic to pets |
| Anthurium andreanum 'Sonate' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days | Toxic to pets |
| Anthurium Angamarcanum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is approaching dry, often every 5-7 days | Toxic to pets |
| Anthurium arisaemoides | Bright indirect light (just back from a sunny window) | When the top 2 cm of mix begins to dry, about every 4-7 days | Toxic to pets |
| Anthurium bakeri | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-8 days | Toxic to pets |
| Anthurium berriozabalense | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 6-9 days | Toxic to pets |
| Anthurium besseae aff. (Dark Velvet) | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is just dry | Toxic to pets |
| Anthurium brownii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-8 days | Toxic to pets |
| Anthurium Chamberlainii | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 5-9 days | Toxic to pets |
| Anthurium clarinervium (Velvet Cardboard Anthurium) | Bright indirect light (just back from a sunny window) | When the top 2-3 cm is dry, roughly every 5-7 days in summer and every 10-14 days in winter | Toxic to pets |
| Anthurium Clarinervium × Crystallinum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is just dry, roughly every 5-9 days | Toxic to pets |
| Anthurium clidemioides | Bright indirect light (just back from a sunny window) | When the surface substrate begins to dry, about every 3-6 days | Toxic to pets |
| Anthurium consobrinum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 6-9 days | Toxic to pets |
| Anthurium Coriaceum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 5-8 days | Toxic to pets |
| Anthurium corrugatum | Bright indirect light (just back from a sunny window) | When the top 2-4 cm of mix dries, about every 5-9 days | Toxic to pets |
| Anthurium crystallinum x magnificum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Toxic to pets |
| Anthurium cutucuense | Bright indirect light (just back from a sunny window) | When the surface of the mix begins to dry, roughly every 4-8 days | Toxic to pets |
| Anthurium Dark Mama | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is just dry, roughly every 5-9 days | Toxic to pets |
| Anthurium debile | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of mix is just dry, about every 5-8 days | Toxic to pets |
| Anthurium digynum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-8 days | Toxic to pets |
| Anthurium dolichostachyum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 6-8 days | Toxic to pets |
| Anthurium Dorayaki | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is just dry, roughly every 5-9 days | Toxic to pets |
| Anthurium eminens | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is just dry, roughly every 5-7 days | Toxic to pets |
| Anthurium faustomirandae | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, about every 6-9 days | Toxic to pets |
| Anthurium gracile | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, about every 6-9 days | Toxic to pets |
| Anthurium jenmanii | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Anthurium Kunthii | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 5-9 days | Toxic to pets |
| Anthurium lancifolium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Toxic to pets |
| Anthurium leuconeurum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 6-8 days | Toxic to pets |
| Anthurium Magnificum | Bright indirect light (just back from a sunny window) | When the top 2 to 3 cm of mix is dry, roughly weekly | Toxic to pets |
| Anthurium Magnificum × Crystallinum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is just dry, roughly every 5-9 days | Toxic to pets |
| Anthurium marmoratum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is just dry, roughly every 5-7 days | Toxic to pets |
| Anthurium metallicum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Toxic to pets |
| Anthurium microspadix | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 6-8 days | Toxic to pets |
| Anthurium Nigrolaminum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is approaching dry, often every 5-7 days | Toxic to pets |
| Anthurium nymphaeifolium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-7 days | Toxic to pets |
| Anthurium ochranthum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-8 days | Toxic to pets |
| Anthurium ovatifolium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-7 days | Toxic to pets |
| Anthurium Pedatum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 5-8 days | Toxic to pets |
| Anthurium pentaphyllum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-7 days | Toxic to pets |
| Anthurium plowmanii | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Anthurium podophyllum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-7 days | Toxic to pets |
| Anthurium polyschistum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-7 days | Toxic to pets |
| Anthurium queremalense | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 6-8 days | Toxic to pets |
| Anthurium radicans | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of substrate dries, about every 4-8 days | Toxic to pets |
| Anthurium radicans x dressleri | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of substrate dries, about every 4-8 days | Toxic to pets |
| Anthurium Ravenii | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 5-9 days | Toxic to pets |
| Anthurium recavum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 6-8 days | Toxic to pets |
| Anthurium Reflexinervium | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is just dry, roughly every 5-9 days | Toxic to pets |
| Anthurium Rotundistigma | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Toxic to pets |
| Anthurium Salgarense | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 5-8 days | Toxic to pets |
| Anthurium salvinii | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, about every 6-9 days | Toxic to pets |
| Anthurium scandens | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-7 days | Toxic to pets |
| Anthurium scherzerianum 'Rothschildianum' | Bright indirect light (just back from a sunny window) | When the top 2 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Anthurium subsignatum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix dries, about every 5-8 days | Toxic to pets |
| Anthurium Timbuiquense | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix begins to dry, often every 5-7 days | Toxic to pets |
| Anthurium Warocqueanum × Andreanum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is just dry, roughly every 5-8 days | Toxic to pets |
| Anthurium watermaliense | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-7 days | Toxic to pets |
| Anthurium x 'Ace of Spades' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Toxic to pets |
| Anthurium x 'Dark Mama' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Anthurium x 'Vittarifolium Hybrid' | Bright indirect light (just back from a sunny window) | When the surface of the mix begins to dry, roughly every 4-6 days | Toxic to pets |
| Apennine Windflower | Medium indirect light (a couple of metres from a window) | Rainfall usually sufficient in woodland settings; water once per week only during dry springs | Toxic to pets |
| Aphelandra tetragona | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Aponogeton crispus | Medium indirect light (a couple of metres from a window) | Permanently submerged in a maintained aquarium; partial water changes | Mildly toxic to pets |
| Appalachian Barren Strawberry | Medium indirect light (a couple of metres from a window) | Low to moderate; drought-tolerant once established | Pet-safe |
| Apple Blossom flowering quince | Bright indirect light (just back from a sunny window) | Weekly when establishing; rainfall sufficient for established plants in temperate climates | Mildly toxic to pets |
| Apricot Bouquet gloxinia | Bright indirect light (just back from a sunny window) | Every 5–10 days; keep evenly moist during active growth | Pet-safe |
| Apricot Gongora | Bright indirect light (just back from a sunny window) | Consistently moist year-round; slight reduction in winter | Pet-safe |
| Aquilegia 'Black Barlow' | Medium indirect light (a couple of metres from a window) | Water when the top 3 cm of soil dries, roughly weekly | Mildly toxic to pets |
| Aquilegia 'Nora Barlow' | Medium indirect light (a couple of metres from a window) | Water when the top 3 cm of soil dries, about weekly | Mildly toxic to pets |
| Arabian Spiral Flag | Medium indirect light (a couple of metres from a window) | Water regularly to maintain evenly moist soil; do not allow more than the top 2 cm to dry between waterings. | Mildly toxic to pets |
| Araza | Bright indirect light (just back from a sunny window) | Twice per week; water when the top 2–3 cm of soil is dry | Mildly toxic to pets |
| Arching Spider Orchid | Bright indirect light (just back from a sunny window) | When the medium nears dryness, about every 4-6 days in warm growth | Mildly toxic to pets |
| Arching Spider Orchid | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of the bark mix is dry, roughly every 7-10 days in summer | Pet-safe |
| Arctic Bell-heather | Bright indirect light (just back from a sunny window) | Keep the root zone consistently moist at all times; water before the top 2 cm dries. | Mildly toxic to pets |
| Ardisia Crenata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Ardisia Elliptica | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Areca palm | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, every 5-7 days | Pet-safe |
| Arendsii astilbe | Medium indirect light (a couple of metres from a window) | 2–3 times per week in summer; weekly otherwise | Pet-safe |
| Ariocarpus Fissuratus | Bright indirect light (just back from a sunny window) | Very sparingly — when fully dry, roughly every 3-4 weeks in summer; almost none otherwise | Mildly toxic to pets |
| Arisaema consanguineum | Medium indirect light (a couple of metres from a window) | Keep evenly moist during growth, about every 4-7 days; ease off as it dies back | Toxic to pets |
| Arisaema elephas | Medium indirect light (a couple of metres from a window) | Keep evenly moist during growth, about every 4-7 days; reduce as it dies back | Toxic to pets |
| Arisaema flavum | Medium indirect light (a couple of metres from a window) | Keep evenly moist during active growth (spring to late summer); withhold once dormant | Toxic to pets |
| Arisaema griffithii | Medium indirect light (a couple of metres from a window) | Keep evenly moist through growth, roughly every 4-7 days; reduce sharply once foliage yellows | Toxic to pets |
| Arisaema jacquemontii | Bright indirect light (just back from a sunny window) | Keep evenly moist in spring and summer growth; allow to dry as the leaf dies back in late summer | Toxic to pets |
| Arisaema nepenthoides | Bright indirect light (just back from a sunny window) | Keep evenly moist in spring and summer; let it dry as the leaf dies back in late summer | Toxic to pets |
| Arisaema ringens | Medium indirect light (a couple of metres from a window) | Keep evenly moist during growth, about every 4-7 days; reduce as it dies back | Toxic to pets |
| Arisaema serratum | Bright indirect light (just back from a sunny window) | Keep evenly moist through spring and summer; allow drying as the leaf dies back in autumn | Toxic to pets |
| Arisaema speciosum | Medium indirect light (a couple of metres from a window) | Keep evenly moist through growth, about every 4-7 days; reduce as it dies back | Toxic to pets |
| Arisaema tortuosum | Medium indirect light (a couple of metres from a window) | Keep moist through the growing season, about every 4-7 days; reduce as it dies back | Toxic to pets |
| Armand's Clematis | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Armored Frailea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 10-14 days in summer | Pet-safe |
| Aromatic Didymocarpus | Medium indirect light (a couple of metres from a window) | Once or twice a week in the growing season; reduce in winter | Pet-safe |
| Arrow Arum | Bright indirect light (just back from a sunny window) | Permanent shallow flooding — plant in up to 15 cm of water | Toxic to pets |
| Arrowhead plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Artillery Plant | Bright indirect light (just back from a sunny window) | When the top 1-2 cm (about half an inch) of soil is dry | Pet-safe |
| Arum italicum | Medium indirect light (a couple of metres from a window) | Keep evenly moist in active growth (autumn to spring); reduce sharply during summer dormancy | Toxic to pets |
| Arum Lily | Bright indirect light (just back from a sunny window) | Regularly moist to wet — water every 2–3 days or plant in standing water | Toxic to pets |
| Asian Star Jasmine | Medium indirect light (a couple of metres from a window) | Water every 7-10 days during the first growing season; established plants are fairly drought-tolerant and need watering only during prolonged dry periods | Mildly toxic to pets |
| Asian Wonder Bamboo | Medium indirect light (a couple of metres from a window) | 2-3 times per week during active growth; once per week in cool or dormant periods | Pet-safe |
| Asparagus fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Asparagus Fern 'Sprengeri' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Asphodel Cranesbill | Bright indirect light (just back from a sunny window) | Weekly during the growing season; reduce in autumn | Pet-safe |
| Astilbe 'Bridal Veil' | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; water deeply 1-2 times weekly, more in heat | Mildly toxic to pets |
| Astilbe 'Deutschland' | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; water every 3-5 days or as needed to prevent the top 2 cm of soil drying out | Pet-safe |
| Astilbe 'Fanal' | Bright indirect light (just back from a sunny window) | Keep soil constantly moist; water every 2-4 days in summer, never letting it dry out | Mildly toxic to pets |
| Astilbe 'Fanal' | Medium indirect light (a couple of metres from a window) | Consistently moist — water whenever the top 2-3 cm of soil begins to dry, roughly every 3-5 days in summer | Pet-safe |
| Astilbe chinensis 'Pumila' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil begins to dry; keep evenly moist, often 2-3 times weekly in heat | Mildly toxic to pets |
| Astilbe simplicifolia 'Sprite' | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; water deeply 1-2 times weekly, more in heat | Mildly toxic to pets |
| Astroloba Bullulata | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth; monthly or less in winter | Mildly toxic to pets |
| Astroloba Congesta | Bright indirect light (just back from a sunny window) | When soil is completely dry, about every 2-3 weeks in growth and monthly or less in winter | Mildly toxic to pets |
| Astroloba Corrugata | Bright indirect light (just back from a sunny window) | When the soil has dried out completely — roughly every 2-3 weeks in growth, monthly or less in winter | Mildly toxic to pets |
| Astroloba Foliolosa | Bright indirect light (just back from a sunny window) | When the soil is fully dry — roughly every 2-3 weeks in growth, monthly or less in winter | Mildly toxic to pets |
| Astroloba Spiralis | Bright indirect light (just back from a sunny window) | When the soil is completely dry — roughly every 2-3 weeks in growth, monthly or less in winter | Mildly toxic to pets |
| Athyrium angustum f. rubellum 'Lady in Red' | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist, watering when the top 2-3 cm dries, roughly every 4-6 days | Mildly toxic to pets |
| Atlantic Monanthes | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring and summer; once monthly in winter | Mildly toxic to pets |
| Aubert's Blyxa | Bright indirect light (just back from a sunny window) | Permanently submerged aquatic plant | Pet-safe |
| Audrey Fig | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Augustine's rhododendron | Bright indirect light (just back from a sunny window) | Every 7–10 days in active growth; reduce in winter | Toxic to pets |
| Aureola Japanese Forest Grass | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil feels dry, roughly every 5-7 days in the growing season | Pet-safe |
| Auricula | Bright indirect light (just back from a sunny window) | Moderately in spring and summer; reduce significantly in autumn and winter | Toxic to pets |
| Auricula Primrose | Bright indirect light (just back from a sunny window) | Water when top 2 cm of soil is dry; more frequent in active growth, sparingly in summer | Mildly toxic to pets |
| Australian Cabbage Palm | Bright indirect light (just back from a sunny window) | Every 5–7 days in summer, fortnightly in winter | Mildly toxic to pets |
| Australian Cycad | Bright indirect light (just back from a sunny window) | Every 14–21 days in summer; very sparingly in winter | Toxic to pets |
| Australian Fan Palm | Bright indirect light (just back from a sunny window) | Weekly in the growing season; every 10–14 days in winter | Pet-safe |
| Australian Fan Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Australian Tree Fern | Bright indirect light (just back from a sunny window) | 2-3 times per week; increase in heat and wind | Pet-safe |
| Australian Tree Fern | Bright indirect light (just back from a sunny window) | Keep the soil and trunk consistently moist; water every few days in warm weather, soaking the root zone | Mildly toxic to pets |
| Autumn Arum | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry during autumn-winter growing season; minimal in summer dormancy | Toxic to pets |
| Autumn Crocus | Bright indirect light (just back from a sunny window) | Relies on natural rainfall; rarely needs supplementary watering | Toxic to pets |
| Autumn Fern | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top 1-2 cm feels dry, often 2-3 times a week | Mildly toxic to pets |
| Autumn Fern 'Brilliance' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 4-7 days | Mildly toxic to pets |
| Autumn Laelia | Bright indirect light (just back from a sunny window) | Every 5–7 days in spring and early summer; taper to every 2–3 weeks in late summer | Pet-safe |
| Autumn Moor Grass | Medium indirect light (a couple of metres from a window) | Every 10-14 days during establishment; drought-tolerant once established | Pet-safe |
| Avalanche Reed Grass | Bright indirect light (just back from a sunny window) | Every 7-14 days; keep moderately moist in the growing season | Pet-safe |
| Awl-Leaved Air Plant | Bright indirect light (just back from a sunny window) | Soak weekly; mist 2–3 times per week | Pet-safe |
| Ayabaca Masdevallia | Medium indirect light (a couple of metres from a window) | Every 2–3 days; keep medium consistently moist | Pet-safe |
| Azalea 'Firefly' | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, roughly every 7-10 days during the growing season | Toxic to pets |
| Azalea 'Gibraltar' | Bright indirect light (just back from a sunny window) | Deeply once or twice a week in dry weather; keep consistently moist year-round | Toxic to pets |
| Azalea 'Hino-Crimson' | Bright indirect light (just back from a sunny window) | Deeply once a week; increase in hot, dry spells | Toxic to pets |
| Azalea 'Weston's Flamingo' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil feels dry, roughly every 5-7 days in summer; reduce in winter | Toxic to pets |
| Azolla pinnata | Bright indirect light (just back from a sunny window) | Keep floating on still or barely-moving water at all times; top up evaporation weekly | Mildly toxic to pets |
| Aztec Cactus | Bright indirect light (just back from a sunny window) | When the potting mix is almost completely dry, roughly every 14-28 days in the growing season; very sparingly in winter | Pet-safe |
| Babaco | Bright indirect light (just back from a sunny window) | Keep consistently moist; water 2-3 times weekly in growth, less in winter | Mildly toxic to pets |
| Baby rubber plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 7-14 days in summer and every 2-3 weeks in winter | Pet-safe |
| Baby Tears (Pilea) | Bright indirect light (just back from a sunny window) | When the top inch of soil begins to dry, often every few days in summer | Pet-safe |
| Baby Tears Plant | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist, watering every 3-5 days | Pet-safe |
| Baby's Tears | Bright indirect light (just back from a sunny window) | Every 2-4 days; keep soil consistently moist | Pet-safe |
| Bacopa | Bright indirect light (just back from a sunny window) | Every 2–3 days in containers during warm weather; reduce in cooler conditions | Pet-safe |
| Bacopa 'Scopia Gulliver Purple' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of compost starts to dry, often daily in warm weather | Pet-safe |
| Bacopa 'Snowtopia' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of compost begins to dry, often daily in warm weather | Pet-safe |
| Bacopa australis | Bright indirect light (just back from a sunny window) | Grown submersed; do a 30-50% aquarium water change weekly | Mildly toxic to pets |
| Bacopa caroliniana | Bright indirect light (just back from a sunny window) | Grown submersed; do a 30-50% aquarium water change weekly | Mildly toxic to pets |
| Bacopa monnieri | Bright indirect light (just back from a sunny window) | Kept submersed or in saturated soil; in aquaria do a 30-50% water change weekly | Mildly toxic to pets |
| Bahia Earth Star | Bright indirect light (just back from a sunny window) | Water soil when top 2-3 cm is dry, roughly every 7-14 days | Pet-safe |
| Bahian Earth Star | Medium indirect light (a couple of metres from a window) | Every 7–10 days | Pet-safe |
| Balao Anthurium | Bright indirect light (just back from a sunny window) | When the top 15-20% of the mix dries out | Toxic to pets |
| Balearic box | Bright indirect light (just back from a sunny window) | Weekly when young; every 10–14 days once established | Toxic to pets |
| Balisier Heliconia | Bright indirect light (just back from a sunny window) | Every 5–7 days; soil should remain evenly moist | Mildly toxic to pets |
| Balkan Sage | Medium indirect light (a couple of metres from a window) | Weekly during dry spells | Pet-safe |
| Ball Moss | Medium indirect light (a couple of metres from a window) | Mist or briefly submerge 2–3 times a week in summer; 1–2 times a week in winter | Pet-safe |
| Baltic Blue Pothos | Bright indirect light (just back from a sunny window) | Roughly every 7-10 days; let the top 1-2 inches (2.5-5 cm) of soil dry out first | Toxic to pets |
| Bamboo Palm | Medium indirect light (a couple of metres from a window) | Every 7–10 days (keep soil evenly moist but never waterlogged) | Pet-safe |
| Bamboo Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (1 inch) of soil is dry, roughly every 7-10 days | Pet-safe |
| bamburanta | Medium indirect light (a couple of metres from a window) | Every 5–7 days in growing season; every 10–14 days in winter | Pet-safe |
| Banana Croton | Bright indirect light (just back from a sunny window) | When the top 1-2.5 cm (half to one inch) of compost is dry, roughly every 7-10 days in summer | Toxic to pets |
| Banana passionflower | Bright indirect light (just back from a sunny window) | Weekly in growing season, reduce in winter | Mildly toxic to pets |
| Banana passionfruit | Bright indirect light (just back from a sunny window) | Every 7–10 days; keep evenly moist | Mildly toxic to pets |
| Banded Billbergia | Bright indirect light (just back from a sunny window) | Every 1–2 weeks (cup); soil when dry | Pet-safe |
| Banded Cape Primrose | Bright indirect light (just back from a sunny window) | Every 5-7 days in the growing season; reduce to every 10-14 days in winter | Pet-safe |
| Banded Haworthia | Bright indirect light (just back from a sunny window) | When soil is fully dry, about every 10-14 days in summer, sparse in winter | Pet-safe |
| Barbados Maidenhair Fern | Bright indirect light (just back from a sunny window) | Every 3–5 days; keep consistently moist | Pet-safe |
| Bare-stemmed Sinningia | Bright indirect light (just back from a sunny window) | Moderate in growing season; withhold in dry rest period | Pet-safe |
| Barla's Masdevallia | Medium indirect light (a couple of metres from a window) | Daily or every 2 days; roots should never dry out completely | Pet-safe |
| Barnim's Dorstenia | Bright indirect light (just back from a sunny window) | Every 7–10 days in summer; every 3–4 weeks in winter | Mildly toxic to pets |
| Baron's Palm | Bright indirect light (just back from a sunny window) | Every 4–7 days; adjust based on temperature and container vs. in-ground | Pet-safe |
| Barren Strawberry | Medium indirect light (a couple of metres from a window) | Low to moderate; drought-tolerant once established | Pet-safe |
| Bartram's Air Plant | Bright indirect light (just back from a sunny window) | Mist lightly 3–4 times a week or soak briefly once a week | Pet-safe |
| Baseball Plant | Bright indirect light (just back from a sunny window) | Every 3-4 weeks in spring/summer; roughly every 6-8 weeks (or less) in winter | Toxic to pets |
| Basket Bromeliad | Medium indirect light (a couple of metres from a window) | Tank every 5–7 days; soil every 10–14 days | Pet-safe |
| Basket Plant | Bright indirect light (just back from a sunny window) | When the top 2-4 cm of soil is dry, about every 7-12 days | Toxic to pets |
| Basketgrass | Bright indirect light (just back from a sunny window) | Every 5–7 days in growing season; every 10–14 days in winter | Pet-safe |
| Beacon Silver Dead Nettle | Medium indirect light (a couple of metres from a window) | Every 7–10 days; water more frequently in sunny or dry situations | Pet-safe |
| Bear Paw | Bright indirect light (just back from a sunny window) | Every 1-2 weeks in spring/summer; roughly every 2-3 weeks in winter | Toxic to pets |
| Bear Paw Fern | Bright indirect light (just back from a sunny window) | Allow the top 2-3 cm of substrate to dry before watering, roughly every 7-10 days | Pet-safe |
| Bear Tupelo | Bright indirect light (just back from a sunny window) | Regularly; keep consistently moist | Pet-safe |
| Bearded Huernia | Bright indirect light (just back from a sunny window) | Every 14–21 days when actively growing (spring–autumn); minimal in winter (once a month or less) | Pet-safe |
| Bearded-Stem Peperomia | Bright indirect light (just back from a sunny window) | Every 2–3 weeks (allow compost to partially dry between waterings) | Pet-safe |
| Beaucarnea Gracilis | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in summer and monthly or less in winter | Pet-safe |
| Beaugleholes Bladderwort | Bright indirect light (just back from a sunny window) | Keep substrate constantly moist year-round | Mildly toxic to pets |
| Beautiful Besleria | Medium indirect light (a couple of metres from a window) | Every 5–7 days, year-round | Pet-safe |
| Beautiful Fuchsia | Bright indirect light (just back from a sunny window) | Water freely in growth; reduce in winter | Pet-safe |
| Beautiful Gastrochilus | Bright indirect light (just back from a sunny window) | Daily misting of roots; soak mounted plants every 2-3 days during active growth; reduce to every 5-7 days in cooler months | Pet-safe |
| Beautiful Sundew | Bright indirect light (just back from a sunny window) | Tray method, keep medium consistently moist | Pet-safe |
| Beautiful-net Lepanthes | Medium indirect light (a couple of metres from a window) | Daily to every 2 days; never allow roots to dry out completely | Pet-safe |
| Bedding Begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 3-5 days | Toxic to pets |
| Bee Orchid | Bright indirect light (just back from a sunny window) | Low; drought-tolerant once established | Pet-safe |
| Beefsteak Begonia | Bright indirect light (just back from a sunny window) | Roughly weekly in summer; every 10-14 days in winter | Toxic to pets |
| Beefsteak Heliconia | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water every 3-5 days in warm weather | Mildly toxic to pets |
| Beehive Ginger | Medium indirect light (a couple of metres from a window) | Water consistently to keep soil moist; do not allow dryout during the growing season. | Mildly toxic to pets |
| Beetle Peperomia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, typically every 7-10 days | Pet-safe |
| Begonia | Bright indirect light (just back from a sunny window) | Weekly watering | Toxic to pets |
| Begonia 'Barkos' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Begonia 'Benitochiba' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-8 days | Toxic to pets |
| Begonia 'Benitoma' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 6-10 days | Toxic to pets |
| Begonia 'Black Coffee' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Begonia 'Black Fang' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 6-10 days | Toxic to pets |
| Begonia 'Black Mamba' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia 'Black Velvet' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Toxic to pets |
| Begonia 'Bonfire' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, often daily in summer baskets | Toxic to pets |
| Begonia 'Braveheart' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days in growth | Toxic to pets |
| Begonia 'Buxton's Crimson' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days | Toxic to pets |
| Begonia 'Charm' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Begonia 'Cleopatra' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Begonia 'Connee Boswell' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia 'Corallina de Lucerna' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia 'Corbeille de Feu' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 3-6 days in summer growth | Toxic to pets |
| Begonia 'Cowardly Lion' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-8 days | Toxic to pets |
| Begonia 'Cracklin' Rosie' | Bright indirect light (just back from a sunny window) | When the top 1-2 inches (3-5 cm) of soil are dry | Toxic to pets |
| Begonia 'Curly Fireflush' | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 4-7 days | Toxic to pets |
| Begonia 'Dragon Wing Pink' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-7 days | Toxic to pets |
| Begonia 'Dragon Wing Red' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 2-4 days in summer containers | Toxic to pets |
| Begonia 'Duartei' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia 'Emerald Giant' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Toxic to pets |
| Begonia 'Escargot' Cocktail Series | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days | Toxic to pets |
| Begonia 'Fedor' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia 'Fiestas' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Begonia 'Fireworks' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Begonia 'Flamingo Queen' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days | Toxic to pets |
| Begonia 'Fragrant Beauty' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-7 days in growth | Toxic to pets |
| Begonia 'Glowing Embers' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-7 days | Toxic to pets |
| Begonia 'Gryphon' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Begonia 'Guy Savard' | Bright indirect light (just back from a sunny window) | When the top 2 cm of mix is dry, roughly every 4-6 days | Toxic to pets |
| Begonia 'Harmony's Red Robin' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Begonia 'Helen Teupel' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia 'Illumination Orange' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, often daily in summer baskets | Toxic to pets |
| Begonia 'Illumination Salmon' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 3-6 days | Toxic to pets |
| Begonia 'Irene Nuss' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-8 days in growth | Toxic to pets |
| Begonia 'It' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Begonia 'Joe Hayden' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 6-8 days | Toxic to pets |
| Begonia 'Jurassic Bewitched' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Begonia 'Jurassic Silver Swirl' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Toxic to pets |
| Begonia 'Jurassic Watermelon' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Begonia 'Lana' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days | Toxic to pets |
| Begonia 'Looking Glass' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 5-7 days in growth | Toxic to pets |
| Begonia 'Lucerna' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia 'Maori Haze' | Bright indirect light (just back from a sunny window) | When the top 2-3cm of soil is dry (roughly weekly in summer, less in winter) | Toxic to pets |
| Begonia 'Marmaduke' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia 'Martin's Mystery' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Toxic to pets |
| Begonia 'Maurice Amey' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Begonia 'Merry Christmas' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia 'Midnight Magic' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Begonia 'Midnight Twist' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Toxic to pets |
| Begonia 'Non-Stop Rose' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-7 days | Toxic to pets |
| Begonia 'Nonstop Joy Salmon' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-7 days | Toxic to pets |
| Begonia 'Nonstop Joy White' | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water when the surface begins to dry, often every 2-4 days in summer pots | Toxic to pets |
| Begonia 'Nonstop Red' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 2-4 days in summer | Toxic to pets |
| Begonia 'Nonstop Rose Petticoat' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 2-4 days in summer | Toxic to pets |
| Begonia 'Norah Bedson' | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 5-8 days | Toxic to pets |
| Begonia 'Northern Lights' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia 'Orange Rubra' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Begonia 'Palomar Prince' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Begonia 'Passing Storm' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia 'Picotee Lace Pink' | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water when the surface begins to dry, often every 2-4 days in summer pots | Toxic to pets |
| Begonia 'Pin Up Flame' | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water when the surface begins to dry, often every 2-4 days in summer pots | Toxic to pets |
| Begonia 'Potpourri' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Begonia 'Red Robin' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Toxic to pets |
| Begonia 'River Nile' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Begonia 'Sachsen' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days | Toxic to pets |
| Begonia 'Santa Cruz Sunset' | Bright indirect light (just back from a sunny window) | When top 2-3 cm of soil is dry, roughly every 3-5 days in summer | Toxic to pets |
| Begonia 'Selph's Mahogany' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Begonia 'Senator White' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Begonia 'Shamus' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 6-8 days | Toxic to pets |
| Begonia 'Silver Jewel' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 5-7 days in growth | Toxic to pets |
| Begonia 'Silver Limbo' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Begonia 'Silver Limbo' | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Begonia 'Sophie Cecile' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia 'Sophie' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia 'Stained Glass' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 5-7 days in growth | Toxic to pets |
| Begonia 'Thurstonii' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Begonia 'Tiger Paws' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-8 days | Toxic to pets |
| Begonia 'Tiny Gem' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, about every 5-7 days | Toxic to pets |
| Begonia 'Tom Ment' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia 'Torch' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-8 days in growth | Toxic to pets |
| Begonia 'U491' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Begonia 'Varsity Red' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Begonia 'Wightii' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Begonia 'Withlacoochee' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 6-8 days | Toxic to pets |
| Begonia 'Zip Code' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days in growth | Toxic to pets |
| Begonia 'Zip' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Begonia × erythrophylla | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Begonia × semperflorens-cultorum 'Cocktail Vodka' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 3-5 days | Toxic to pets |
| Begonia × semperflorens-cultorum 'Dragon Wing Red' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 3-5 days in containers in summer | Toxic to pets |
| Begonia × tuberhybrida 'Non-Stop Mocca White' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 3-5 days in growth | Toxic to pets |
| Begonia × tuberhybrida 'Nonstop Rose' | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is just dry, roughly every 2-4 days in summer | Toxic to pets |
| Begonia × tuberhybrida 'Pin-Up Flame' | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is just dry, roughly every 2-4 days in summer | Toxic to pets |
| Begonia aconitifolia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days | Toxic to pets |
| Begonia albopicta | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia Amphioxus | Bright indirect light (just back from a sunny window) | Keep lightly and evenly moist; water when the top of the substrate begins to dry | Toxic to pets |
| Begonia carolineifolia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 6-10 days in growth | Toxic to pets |
| Begonia chlorosticta | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of mix is just dry, roughly every 4-7 days | Toxic to pets |
| Begonia conchifolia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia convolvulacea | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 4-7 days | Toxic to pets |
| Begonia dichroa | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Begonia dregei | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Begonia ferox | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of substrate is dry, roughly every 4-7 days | Toxic to pets |
| Begonia foliosa | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 4-7 days | Toxic to pets |
| Begonia gehrtii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia goegoensis | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of mix is dry, roughly every 4-7 days | Toxic to pets |
| Begonia grandis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly weekly in active growth | Toxic to pets |
| Begonia grandis subsp. evansiana | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist in summer; water during dry spells, roughly weekly in heat | Toxic to pets |
| Begonia hatacoa | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is just dry, roughly every 4-6 days | Toxic to pets |
| Begonia heracleifolia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Begonia imperialis | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days in growth | Toxic to pets |
| Begonia incarnata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days in growth | Toxic to pets |
| Begonia manicata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 6-9 days in growth | Toxic to pets |
| Begonia mazae | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 5-8 days | Toxic to pets |
| Begonia metallica | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 4-7 days | Toxic to pets |
| Begonia microsperma | Bright indirect light (just back from a sunny window) | When the top 2 cm of mix is just drying, roughly every 4-6 days | Toxic to pets |
| Begonia nelumbifolia 'Marmorata' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days | Toxic to pets |
| Begonia nelumbiifolia | Bright indirect light (just back from a sunny window) | When the top 2-4 cm of mix is dry, roughly every 5-9 days | Toxic to pets |
| Begonia odorata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 4-7 days in growth | Toxic to pets |
| Begonia partita | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 7-12 days | Toxic to pets |
| Begonia peltata | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Begonia prismatocarpa | Medium indirect light (a couple of metres from a window) | Keep the medium consistently moist; check every 3-5 days | Toxic to pets |
| Begonia pustulata | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days in growth | Toxic to pets |
| Begonia reniformis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Begonia scharffii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia schmidtiana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days in growth | Toxic to pets |
| Begonia sizemoreae | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of mix dries slightly, about every 5-7 days | Toxic to pets |
| Begonia solananthera | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Begonia stipulacea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days in growth | Toxic to pets |
| Begonia subvillosa | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Begonia sutherlandii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, every few days in summer | Toxic to pets |
| Begonia U-377 | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil begins to dry, often every 4-6 days | Toxic to pets |
| Belize Sage | Bright indirect light (just back from a sunny window) | Twice weekly during active growth | Pet-safe |
| Bell Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep substrate consistently moist | Mildly toxic to pets |
| Bella Palm | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, about every 5-7 days in growth | Pet-safe |
| Bellflower Codonopsis | Medium indirect light (a couple of metres from a window) | Water when the top 2–3 cm of soil is dry during the growing season; reduce significantly in winter | Mildly toxic to pets |
| Bellina Moth Orchid | Bright indirect light (just back from a sunny window) | Roughly every 5-7 days; when potting media is nearly dry but not bone dry | Pet-safe |
| Benedict's Dragon Orchid | Medium indirect light (a couple of metres from a window) | Every 1–2 days during growth; morning fogging in winter rest | Pet-safe |
| Beni-kaze Hakone Grass | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist; water 1-2 times weekly, more in heat | Mildly toxic to pets |
| Bent Enkianthus | Bright indirect light (just back from a sunny window) | Regular — keep consistently moist | Toxic to pets |
| Bent Masdevallia | Bright indirect light (just back from a sunny window) | Every 2-3 days in warm weather, every 3-4 days in winter | Pet-safe |
| Bent Trillium | Medium indirect light (a couple of metres from a window) | Consistently moist through spring; tolerates slightly drier conditions during summer dormancy | Mildly toxic to pets |
| Berry Smoothie Heuchera | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly weekly | Pet-safe |
| Bertero's Guzmania | Bright indirect light (just back from a sunny window) | Refill cup every 7 days; flush every 3–4 weeks | Pet-safe |
| Bertolonia maculata | Bright indirect light (just back from a sunny window) | Keep the mix evenly moist, watering when the top layer just starts to dry, roughly every 4-6 days | Pet-safe |
| Bertolonia Marmorata | Medium indirect light (a couple of metres from a window) | Keep evenly moist at all times; water as the surface starts to dry, often every 3-5 days | Pet-safe |
| Besleria lutea | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 4-7 days | Mildly toxic to pets |
| Betel Leaf | Medium indirect light (a couple of metres from a window) | When the top 2–3 cm of soil are dry, typically every 4–6 days indoors | Mildly toxic to pets |
| Bethencourt's Aichryson | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season (spring and autumn); sparingly in summer heat and winter rest | Mildly toxic to pets |
| Beucker's Earth Star | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of potting mix is dry, roughly every 7-10 days | Pet-safe |
| Bicalcarata Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep the medium consistently moist; water every 2-3 days, more in heat | Mildly toxic to pets |
| Big Blue Lilyturf | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Big Red Sage | Bright indirect light (just back from a sunny window) | Moderate; keep evenly moist, especially during establishment | Pet-safe |
| Bigleaf Hydrangea 'Nikko Blue' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, often every 2-4 days in summer | Toxic to pets |
| Bigleaf Magnolia | Bright indirect light (just back from a sunny window) | Deeply twice weekly during establishment; weekly once established in dry periods | Pet-safe |
| Billbergia 'Fantasia' | Bright indirect light (just back from a sunny window) | Keep the central vase topped up; flush and refill every 1-2 weeks, water the mix when it dries | Pet-safe |
| Billbergia amoena | Bright indirect light (just back from a sunny window) | Keep the central cup filled; flush and refill every 1-2 weeks | Pet-safe |
| Billbergia pyramidalis | Bright indirect light (just back from a sunny window) | Keep the central cup topped up; water the mix when its top 2-3 cm is dry, about weekly in growth | Pet-safe |
| Billbergia venezuelana | Bright indirect light (just back from a sunny window) | Keep the central tube topped up; water the mix when its top 2-3 cm is dry, about weekly in growth | Pet-safe |
| Billbergia zebrina | Bright indirect light (just back from a sunny window) | Keep the central tube topped up; water the mix when its top 2-3 cm is dry, about weekly in growth | Pet-safe |
| Bird-in-a-bush | Medium indirect light (a couple of metres from a window) | Moderate in spring during active growth; dry during summer dormancy | Toxic to pets |
| Bird's Foot Fern | Bright indirect light (just back from a sunny window) | every 2-4 weeks (very drought-tolerant once established) | Mildly toxic to pets |
| Bird's Foot Fern | Bright indirect light (just back from a sunny window) | Allow the top half of soil to dry out between waterings, roughly every 10-14 days | Mildly toxic to pets |
| Bird's Nest Anthurium | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Bird's Nest Bromeliad | Medium indirect light (a couple of metres from a window) | Keep the central cup filled; water the compost lightly every 10-14 days | Pet-safe |
| Bird's Nest Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 7-10 days | Pet-safe |
| Bird's Nest Fern 'Crissie' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, often every 7-10 days | Pet-safe |
| Bird's Nest Fern 'Osaka' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, often every 7-10 days | Pet-safe |
| Bird's Nest Fern 'Victoria' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, often every 7-10 days | Pet-safe |
| Birthwort Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep medium consistently moist; water every 2–3 days | Mildly toxic to pets |
| Bishop Heliconia | Bright indirect light (just back from a sunny window) | Every 2–3 days in summer, weekly in winter | Mildly toxic to pets |
| Bishop's Cap Cactus | Bright indirect light (just back from a sunny window) | Every 1-2 weeks in spring/summer; roughly monthly or less in winter | Pet-safe |
| Biting Porroglossum | Medium indirect light (a couple of metres from a window) | Daily or every other day; medium must not dry out | Pet-safe |
| Bitter Vetch | Medium indirect light (a couple of metres from a window) | Moderate — allow soil to approach dryness between waterings | Mildly toxic to pets |
| Bitterroot Lewisia | Bright indirect light (just back from a sunny window) | Weekly in spring; monthly or less in summer dormancy | Pet-safe |
| Black Calla Lily | Bright indirect light (just back from a sunny window) | Generously during active growth; taper off as foliage dies back; bone dry in dormancy | Toxic to pets |
| Black Cohosh | Medium indirect light (a couple of metres from a window) | 2–3 times per week in summer; weekly in cooler seasons | Mildly toxic to pets |
| Black Fang Begonia | Medium indirect light (a couple of metres from a window) | Every 10–14 days; allow top 2–3 cm to dry | Toxic to pets |
| Black Flowering Sedge | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist to wet; water whenever the surface begins to dry | Pet-safe |
| Black Gold clog plant | Bright indirect light (just back from a sunny window) | Every 7–10 days in spring–summer, every 12–14 days in autumn–winter | Pet-safe |
| Black Gold Goldfish Plant | Bright indirect light (just back from a sunny window) | Every 7–10 days; allow top 2–3 cm of soil to dry between waterings | Pet-safe |
| Black Lily Magnolia | Bright indirect light (just back from a sunny window) | Weekly during the growing season; reduce in winter | Pet-safe |
| Black Mondo Grass | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Black Mondo Grass | Medium indirect light (a couple of metres from a window) | Once a week during the growing season; reduce in winter | Mildly toxic to pets |
| Black Pagoda Lipstick Plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Black Pitcairnia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil feels barely moist, roughly every 5-7 days in summer | Pet-safe |
| Black Scallop Bugle | Medium indirect light (a couple of metres from a window) | Once or twice weekly; reduce to once weekly when established | Mildly toxic to pets |
| Black sedge | Bright indirect light (just back from a sunny window) | Keep constantly moist to wet; tolerates standing water | Pet-safe |
| Black Spleenwort | Medium indirect light (a couple of metres from a window) | Weekly in the growing season; sparingly in winter | Mildly toxic to pets |
| Black Tree Fern | Bright indirect light (just back from a sunny window) | Daily in warm/windy conditions; 3 times per week in cool seasons | Pet-safe |
| Black Velvet Anthurium | Bright indirect light (just back from a sunny window) | Every 5-10 days; let the top 2-3 cm (1 inch) dry first | Toxic to pets |
| Black-Seeded Melic | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water in dry spells, especially in lighter shade | Mildly toxic to pets |
| Black-stemmed Spleenwort | Medium indirect light (a couple of metres from a window) | When the top centimetre of substrate feels dry | Pet-safe |
| Bladder Campion | Bright indirect light (just back from a sunny window) | Low; drought-tolerant | Mildly toxic to pets |
| Bladder-flowered Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Bladderwort | Bright indirect light (just back from a sunny window) | Keep constantly wet — never let it dry out | Mildly toxic to pets |
| Blechnum chilense | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 4-6 days | Mildly toxic to pets |
| Blechum brownei | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 3-5 days in warm growth | Mildly toxic to pets |
| Bleeding Heart | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry; roughly weekly, keeping soil consistently moist in spring | Toxic to pets |
| Bleeding Heart | Medium indirect light (a couple of metres from a window) | Every 5–7 days in spring; taper off as foliage yellows; minimal when dormant | Toxic to pets |
| Bleeding heart vine | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (1 in) of soil dries | Mildly toxic to pets |
| Bleeding Heart Vine | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Blonde Ambition Rush | Bright indirect light (just back from a sunny window) | Keep soil consistently moist to wet at all times | Pet-safe |
| Blonde Sedge | Bright indirect light (just back from a sunny window) | Moderate; drought-tolerant once established | Pet-safe |
| Blood Bromeliad | Bright indirect light (just back from a sunny window) | Keep cup filled; refresh every 1-2 weeks | Pet-safe |
| Blood-red Bertolonia | Medium indirect light (a couple of metres from a window) | Every 4–6 days; keep medium consistently moist | Pet-safe |
| Blood-red Guzmania | Medium indirect light (a couple of metres from a window) | Refill tank every 5–7 days; flush monthly | Pet-safe |
| Blood-red Restrepia | Medium indirect light (a couple of metres from a window) | Every 2–4 days; keep medium consistently lightly moist | Pet-safe |
| Bloodgood Japanese Maple | Bright indirect light (just back from a sunny window) | When the top 3–5 cm of soil is dry, roughly every 5–7 days in summer; weekly to fortnightly in autumn and spring | Pet-safe |
| Bloodleaf Plant | Bright indirect light (just back from a sunny window) | Every 7 days in spring/summer; every 10–14 days in autumn/winter | Pet-safe |
| Bloodroot | Medium indirect light (a couple of metres from a window) | Every 5–7 days during spring growth; minimal or none during summer dormancy | Toxic to pets |
| Blue Anise Sage | Bright indirect light (just back from a sunny window) | Weekly | Pet-safe |
| Blue Bells Bush Violet | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, roughly every 5-7 days | Mildly toxic to pets |
| Blue Cloud Cranesbill | Bright indirect light (just back from a sunny window) | Moderate; water in dry spells | Mildly toxic to pets |
| Blue Columbine | Medium indirect light (a couple of metres from a window) | Water when the top 3 cm of soil dries, about weekly | Mildly toxic to pets |
| Blue Cycas | Bright indirect light (just back from a sunny window) | Water when the top 3-5 cm of soil is dry, about every 1-2 weeks | Toxic to pets |
| Blue Dendrobium | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; reduce to every 2–3 weeks in winter | Pet-safe |
| Blue Echeveria | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in growth | Pet-safe |
| Blue Frills cape primrose | Bright indirect light (just back from a sunny window) | Every 7–10 days in the growing season; every 14–21 days in winter | Pet-safe |
| Blue Ginger | Bright indirect light (just back from a sunny window) | Keep soil consistently moist, watering every 5-7 days in the growing season | Mildly toxic to pets |
| Blue Holly 'Blue Princess' | Bright indirect light (just back from a sunny window) | Weekly while establishing, then during dry spells | Toxic to pets |
| Blue Hosta 'Halcyon' | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, about every 5-7 days | Toxic to pets |
| Blue Ice bog rosemary | Bright indirect light (just back from a sunny window) | Consistently moist; never allow to dry out | Toxic to pets |
| Blue Lace Zygopetalum | Bright indirect light (just back from a sunny window) | Every 3–4 days in active growth, weekly in winter | Pet-safe |
| Blue Rabbit's Foot Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of the mix is dry, roughly every 5-7 days | Pet-safe |
| Blue Rabbit's Foot Fern | Bright indirect light (just back from a sunny window) | When the growing medium is nearly dry, roughly every 5-10 days in summer | Pet-safe |
| Blue Ridge Creeping Phlox | Medium indirect light (a couple of metres from a window) | Weekly in the first season; every 1–2 weeks once established | Pet-safe |
| Blue sedge | Bright indirect light (just back from a sunny window) | Water regularly until established; minimal thereafter | Pet-safe |
| Blue Spurflower | Medium indirect light (a couple of metres from a window) | Moderate — water once or twice weekly in summer; reduce significantly in winter | Mildly toxic to pets |
| Blue Star Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is just barely dry, about every 5-7 days in growth | Pet-safe |
| Blue-Flowered Air Plant | Bright indirect light (just back from a sunny window) | Once or twice weekly | Pet-safe |
| Blue-flowered Torch | Bright indirect light (just back from a sunny window) | Mist 2–3 times per week and soak for 20 minutes weekly during spring and summer; reduce to misting only in winter. | Pet-safe |
| Blue-leaved Parlour Palm | Bright indirect light (just back from a sunny window) | Every 7–10 days in summer, every 14 days in winter | Pet-safe |
| Blue-stemmed Polypody | Bright indirect light (just back from a sunny window) | Every 5–7 days in spring and summer; every 10–14 days in winter | Pet-safe |
| Bluebird Mountain Hydrangea | Bright indirect light (just back from a sunny window) | Deeply once or twice a week during the growing season; reduce in autumn and winter | Mildly toxic to pets |
| Blume's Typhonium | Bright indirect light (just back from a sunny window) | Moderate when in growth; withhold completely in dormancy | Toxic to pets |
| Blunt Greenhood | Medium indirect light (a couple of metres from a window) | Keep lightly moist during active growth (autumn–spring), roughly every 5-7 days | Pet-safe |
| Blunt-Leaf Wax Plant | Medium indirect light (a couple of metres from a window) | Every 7–14 days in growing season; reduce significantly in winter | Pet-safe |
| Blunt-leaf Zamia | Bright indirect light (just back from a sunny window) | Every 10–14 days; reduce to monthly in cooler or drier months | Toxic to pets |
| Blushing Arisaema | Medium indirect light (a couple of metres from a window) | Regularly during growing season; minimal in dormancy | Toxic to pets |
| Blushing Bromeliad | Bright indirect light (just back from a sunny window) | Keep the central cup topped up; flush and refill every 1-2 weeks. Keep mix lightly moist. | Pet-safe |
| Blushing Bromeliad | Bright indirect light (just back from a sunny window) | Keep the central cup filled; water the mix when the top 2-3 cm is dry | Pet-safe |
| Blushing Dunce Cap | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in spring and summer; very sparingly in autumn; almost none in winter | Pet-safe |
| Boat Orchid | Bright indirect light (just back from a sunny window) | Spring-summer: keep evenly moist, roughly weekly; autumn-winter: reduce to weekly or fortnightly when barely damp | Mildly toxic to pets |
| Boat-Leaf Orthophytum | Bright indirect light (just back from a sunny window) | Every 7–10 days in growth; every 14–21 days in winter | Pet-safe |
| Boea Hygroscopica | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days | Mildly toxic to pets |
| Boehmer's Dunce Cap | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring and summer (active growing season); once monthly or less in winter | Mildly toxic to pets |
| Bog Arum | Medium indirect light (a couple of metres from a window) | Saturated soil or up to 15 cm of standing water | Toxic to pets |
| Bog Laurel | Bright indirect light (just back from a sunny window) | Frequent; keep soil consistently moist to wet | Toxic to pets |
| Bog rosemary | Bright indirect light (just back from a sunny window) | Consistently moist; never allow to dry out | Toxic to pets |
| Bogner's Bucephalandra | Medium indirect light (a couple of metres from a window) | Keep substrate or media consistently moist; do not allow to dry out between waterings | Toxic to pets |
| Bogota kohleria | Bright indirect light (just back from a sunny window) | Every 7–10 days in growth; reduced to every 3–4 weeks in winter | Pet-safe |
| Boivin's Aponogeton | Medium indirect light (a couple of metres from a window) | Permanently submerged; weekly 25% water changes | Pet-safe |
| Boivin's Aponogeton | Medium indirect light (a couple of metres from a window) | Fully submerged aquatic; maintain in aquarium water year-round except during dormancy | Pet-safe |
| Boivin's Peperomia | Bright indirect light (just back from a sunny window) | Every 14–21 days in the growing season; every 4–6 weeks in winter | Pet-safe |
| Bolbitis heudelotii | Medium indirect light (a couple of metres from a window) | Permanently submerged; 30-50% water change weekly | Mildly toxic to pets |
| Bolero Painted Tongue | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Mildly toxic to pets |
| Bolivian Columnea | Bright indirect light (just back from a sunny window) | When top 2–3 cm of mix dries | Pet-safe |
| Bolivian Fuchsia | Bright indirect light (just back from a sunny window) | Every 5-7 days in the growing season; every 14 days in winter | Pet-safe |
| Bolivian Sunset | Medium indirect light (a couple of metres from a window) | Every 4–5 days in growth; reduce in dormancy | Mildly toxic to pets |
| Bolivian Zamia | Bright indirect light (just back from a sunny window) | Every 7–14 days; reduce to every 21 days in cooler months | Toxic to pets |
| Boliviensis Begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, often daily in summer baskets | Toxic to pets |
| Bolus' Stomatium | Bright indirect light (just back from a sunny window) | Very sparingly in summer; every 2–3 weeks in autumn–spring | Pet-safe |
| Borden's Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer; every 3–4 weeks in winter | Pet-safe |
| Boston fern | Medium indirect light (a couple of metres from a window) | When the top 1 cm of soil is just dry, every 3-5 days | Pet-safe |
| Boston Fern | Medium indirect light (a couple of metres from a window) | Every 3–4 days in spring and summer; every 5–7 days in winter | Pet-safe |
| Boston Fern 'Dallas' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, often every 4-7 days | Pet-safe |
| Boston Fern 'Fluffy Ruffles' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, often every 3-5 days | Pet-safe |
| Bottle Gentian | Medium indirect light (a couple of metres from a window) | Regular — keep soil consistently moist | Pet-safe |
| Bow Bells Cattleya | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; every 10–14 days in winter | Pet-safe |
| Bower Vine | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; reduce to every 10–14 days in cool or dry winter rest | Mildly toxic to pets |
| Bowman's Dieffenbachia | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 8-12 days | Toxic to pets |
| box honeysuckle | Bright indirect light (just back from a sunny window) | Regularly during the first season; drought-tolerant once established | Mildly toxic to pets |
| Bracteate Rhinephyllum | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in spring–summer; minimal in winter | Pet-safe |
| Bracted Aechmea | Bright indirect light (just back from a sunny window) | Every 10–14 days | Pet-safe |
| Bracted Begonia | Bright indirect light (just back from a sunny window) | When the top 2–3 cm of soil is dry | Toxic to pets |
| Bracted Dendrobium | Bright indirect light (just back from a sunny window) | Freely when in active growth (every 2-4 days); reduce sharply to monthly in the dry winter rest | Pet-safe |
| Bracted Lipstick Plant | Bright indirect light (just back from a sunny window) | Water when the top 2–3 cm of mix has dried; roughly every 7 days in summer, every 10–14 days in winter | Pet-safe |
| Bracted Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring/summer; every 3–4 weeks in winter | Pet-safe |
| Bracted Spiderwort | Bright indirect light (just back from a sunny window) | Fortnightly or less once established | Mildly toxic to pets |
| Brade's Begonia | Medium indirect light (a couple of metres from a window) | When the top 1–2 cm of soil feels dry | Toxic to pets |
| Bradley's Spleenwort | Medium indirect light (a couple of metres from a window) | When the top 1–2 cm of substrate dries out | Pet-safe |
| Brassavola digbyana | Bright indirect light (just back from a sunny window) | Every 5-7 days in growth; far less in winter rest, every 2-3 weeks | Pet-safe |
| Brassia 'Rex' | Bright indirect light (just back from a sunny window) | When the bark surface dries, about every 5-7 days in growth | Mildly toxic to pets |
| Brassia caudata | Bright indirect light (just back from a sunny window) | Water thoroughly, then let the top of the mix approach dryness; about every 5-7 days in growth | Pet-safe |
| Braun's Holly Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days; keep evenly moist | Pet-safe |
| Braun's Holly Fern | Medium indirect light (a couple of metres from a window) | Every 3–5 days; maintain consistently moist but well-drained soil | Pet-safe |
| Brazilian Edelweiss | Bright indirect light (just back from a sunny window) | When the top few cm of soil are dry during active growth; withhold during dormancy | Pet-safe |
| Brazilian Micro Sword | Bright indirect light (just back from a sunny window) | Permanently submerged aquatic plant | Pet-safe |
| Brazilian Plume | Bright indirect light (just back from a sunny window) | Regularly — keep soil consistently moist but never waterlogged | Pet-safe |
| Brazilian Plume Flower | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Pet-safe |
| Brazilian Rain Tree Bonsai | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the surface just begins to dry | Mildly toxic to pets |
| Brazilian Sinningia | Bright indirect light (just back from a sunny window) | When top 2–3 cm of compost feel dry | Pet-safe |
| Brazilian Tree Fern | Medium indirect light (a couple of metres from a window) | 2–3 times per week in growing season, once a week in winter | Pet-safe |
| Brazilian Waterweed | Bright indirect light (just back from a sunny window) | Permanently submerged | Pet-safe |
| Bread Tree Cycad | Bright indirect light (just back from a sunny window) | When the top half of the pot is dry, roughly every 10-14 days in growth | Toxic to pets |
| Bressingham White Bergenia | Medium indirect light (a couple of metres from a window) | Every 7–10 days during the growing season; reduce in autumn and winter | Pet-safe |
| Brewer's Mountain Heather | Bright indirect light (just back from a sunny window) | Regular; keep soil consistently moist | Mildly toxic to pets |
| Bridal Veil Plant | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, about every 4-7 days in growth | Mildly toxic to pets |
| Brigham's Specklinia | Medium indirect light (a couple of metres from a window) | Every 1–2 days; allow medium to barely dry between waterings | Pet-safe |
| Brillantaisia subulugurica | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil dries, about every 3-5 days in heat | Mildly toxic to pets |
| Brilliantelse Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 3–5 days; never allow to fully dry out | Pet-safe |
| Bristle-Leaf Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days (allow top half of soil to dry) | Pet-safe |
| Bristle-Leaved Air Plant | Bright indirect light (just back from a sunny window) | Soak weekly; mist 2–3 times per week in dry conditions | Pet-safe |
| Bristly Lepanthes | Medium indirect light (a couple of metres from a window) | Daily or every 2 days; medium kept consistently moist | Pet-safe |
| Britt-Marie Crawford Ligularia | Medium indirect light (a couple of metres from a window) | Constantly moist to wet; never allow to dry out — water generously in any dry spell, sometimes daily in heat | Mildly toxic to pets |
| Brittle Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 2–3 days in warm months; every 4–5 days in winter | Pet-safe |
| Broad Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 3–4 days in the growing season; every 5–7 days in winter | Pet-safe |
| Broad-leaf Chain Orchid | Medium indirect light (a couple of metres from a window) | Every 5-7 days in growth; every 10-14 days in winter | Pet-safe |
| Broad-leaf Horncone | Bright indirect light (just back from a sunny window) | Every 1–2 weeks in the growing season; every 3–4 weeks in winter | Toxic to pets |
| Broad-Leaved Grape Hyacinth | Bright indirect light (just back from a sunny window) | Low once established; moderate during active growth | Toxic to pets |
| Broad-leaved Helleborine | Medium indirect light (a couple of metres from a window) | Regular during dry spells; keep consistently moist but not waterlogged | Mildly toxic to pets |
| Broad-Leaved Lime | Bright indirect light (just back from a sunny window) | Weekly during establishment; supplemental watering in prolonged drought | Pet-safe |
| Broad-Leaved Primrose | Medium indirect light (a couple of metres from a window) | Regularly throughout the growing season; reduced in winter | Toxic to pets |
| Broad-Petalled Cranesbill | Bright indirect light (just back from a sunny window) | Once or twice a week in the growing season; less in winter | Pet-safe |
| Broad-Sepal Gongora | Bright indirect light (just back from a sunny window) | Every 4–6 days during growth; every 10–14 days in winter | Pet-safe |
| Broadleaf Bamboo | Medium indirect light (a couple of metres from a window) | 2–3 times per week in summer, once per week in winter | Pet-safe |
| Bromeliad | Bright indirect light (just back from a sunny window) | Keep the central cup filled, soil barely moist | Pet-safe |
| Bronze Sedge | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Mildly toxic to pets |
| Brown Spiderwort | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Browning Coelogyne | Medium indirect light (a couple of metres from a window) | Evenly moist in the growing season (mid-spring to early autumn); water every 3–4 weeks in winter rest | Pet-safe |
| Bruch's Chin Cactus | Bright indirect light (just back from a sunny window) | When soil is completely dry, roughly every 10-14 days in summer; very sparingly in winter | Pet-safe |
| Brueggers Vanhouttea | Bright indirect light (just back from a sunny window) | Every 5–8 days; allow the top 2 cm of medium to dry slightly | Pet-safe |
| Brunnera macrophylla | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7 days | Mildly toxic to pets |
| Brunnera macrophylla 'Jack Frost' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Mildly toxic to pets |
| Brunnera macrophylla 'Looking Glass' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Mildly toxic to pets |
| Brush Cherry | Bright indirect light (just back from a sunny window) | Weekly when young; every 10–14 days once established | Pet-safe |
| Bucephalandra Brownie Miami | Medium indirect light (a couple of metres from a window) | Kept submerged in an aquarium, or rhizome misted daily in an emersed setup | Toxic to pets |
| Bucephalandra Kedagang | Medium indirect light (a couple of metres from a window) | Kept submerged in an aquarium, or rhizome misted daily in an emersed setup | Toxic to pets |
| Bucephalandra Theia Green | Medium indirect light (a couple of metres from a window) | Kept submerged in an aquarium, or rhizome misted daily in an emersed setup | Toxic to pets |
| Buchanan's Sage | Bright indirect light (just back from a sunny window) | Every 5-7 days during the growing season | Pet-safe |
| Buchholtz's Billbergia | Medium indirect light (a couple of metres from a window) | Every 2–3 weeks (soil); cup refreshed every 3–4 weeks | Pet-safe |
| Buchholz's Tylecodon | Bright indirect light (just back from a sunny window) | Every 10–14 days when actively growing (autumn–spring); once per month or less in summer | Toxic to pets |
| Bud-bearing Trisetella | Medium indirect light (a couple of metres from a window) | When the medium surface is just barely drying, roughly every 3-5 days | Pet-safe |
| Buddha's Temple | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth; minimal in winter | Toxic to pets |
| Buddhist Pine | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Bugle | Medium indirect light (a couple of metres from a window) | Moderate; keep evenly moist but never waterlogged | Pet-safe |
| Bulbifer Voodoo Lily | Bright indirect light (just back from a sunny window) | Keep evenly moist while in leaf; keep the corm dry through dormancy | Toxic to pets |
| Bulbophyllum barbigerum | Medium indirect light (a couple of metres from a window) | Every 2-4 days; keep evenly moist | Pet-safe |
| Bulbophyllum Elizabeth Ann | Medium indirect light (a couple of metres from a window) | Every 2-4 days; keep consistently moist | Pet-safe |
| Bulbophyllum falcatum | Bright indirect light (just back from a sunny window) | Water when the roots and medium approach dryness, roughly every 2-4 days when mounted, less in pots | Pet-safe |
| Bulbophyllum longissimum | Bright indirect light (just back from a sunny window) | Water as the medium nears dryness, roughly every 2-4 days; more often when mounted in warm weather | Pet-safe |
| Bulbophyllum vaginatum | Bright indirect light (just back from a sunny window) | Water as the medium approaches dryness, around every 2-4 days; daily when mounted in heat | Pet-safe |
| Bulbous Corydalis | Medium indirect light (a couple of metres from a window) | Rely on natural rainfall during spring growth; no irrigation needed once dormant in summer | Toxic to pets |
| Bullate Nautilocalyx | Medium indirect light (a couple of metres from a window) | Every 2–4 days in the growing season; reduce to once weekly in autumn–winter | Pet-safe |
| Bullate Sinningia | Medium indirect light (a couple of metres from a window) | When top 2 cm of compost feels dry | Pet-safe |
| Bunch-flowered Narcissus | Bright indirect light (just back from a sunny window) | Moderate and consistent during active growth; reduce sharply as foliage yellows; dormant dry | Toxic to pets |
| Burchell's Mistletoe Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season; every 14-21 days in winter | Pet-safe |
| Burgundy Glow Bugle | Medium indirect light (a couple of metres from a window) | Moderate; consistently moist but not waterlogged | Mildly toxic to pets |
| Burgundy Lace Japanese Painted Fern | Medium indirect light (a couple of metres from a window) | 2–3 times per week in growing season, reduce significantly in winter dormancy | Pet-safe |
| Burgundy Periwinkle | Medium indirect light (a couple of metres from a window) | Weekly during establishment; every 2–3 weeks once established | Toxic to pets |
| Burgundy Rubber Plant | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days in growth | Toxic to pets |
| Burke's Raphionacme | Bright indirect light (just back from a sunny window) | Weekly to bi-weekly during active growth; none in winter | Mildly toxic to pets |
| Burrawang | Medium indirect light (a couple of metres from a window) | Water every 2–3 weeks in growing season, monthly or less in winter | Toxic to pets |
| Burrawang Palm | Bright indirect light (just back from a sunny window) | Every 2–3 weeks | Toxic to pets |
| Burro's tail | Bright indirect light (just back from a sunny window) | When soil is dry, every 14-21 days | Pet-safe |
| Burser's Saxifrage | Bright indirect light (just back from a sunny window) | Every 7–10 days during growth; minimal in winter | Pet-safe |
| Burton's Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; reduce to every 3–4 weeks in winter | Pet-safe |
| Bush Hoya | Bright indirect light (just back from a sunny window) | Roughly weekly in summer; every 10-14 days in winter | Pet-safe |
| Bush Vetch | Bright indirect light (just back from a sunny window) | Low to moderate — maintain moderate soil moisture | Mildly toxic to pets |
| Bushgrass | Medium indirect light (a couple of metres from a window) | Moderate — water regularly to establish, then largely drought-tolerant | Pet-safe |
| Bushy Aichryson | Bright indirect light (just back from a sunny window) | Every 10–15 days in summer (growing season); once monthly in winter | Mildly toxic to pets |
| Butterfly Orchid | Bright indirect light (just back from a sunny window) | When the bark surface is nearly dry, every 7-10 days; never allow prolonged bone dryness | Pet-safe |
| Button fern | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, every 7-10 days | Pet-safe |
| Button Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Byfield Fern Cycad | Medium indirect light (a couple of metres from a window) | Every 1–2 weeks | Toxic to pets |
| Byzantine Colchicum | Bright indirect light (just back from a sunny window) | Relies on natural rainfall; do not water during summer dormancy | Toxic to pets |
| Byzantine Meadow Saffron | Bright indirect light (just back from a sunny window) | Relies on natural rainfall; needs no supplementary watering once established | Toxic to pets |
| Cabbage Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of the growing medium feel dry, roughly every 5-7 days in summer | Pet-safe |
| Cacao | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water when the surface just begins to dry, often 2-3 times weekly | Toxic to pets |
| Cajuru Vine | Bright indirect light (just back from a sunny window) | Every 5–7 days; keep soil consistently moist but not waterlogged | Mildly toxic to pets |
| Caladium | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, every 4-7 days | Toxic to pets |
| Caladium 'Carolyn Whorton' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, often every 4-6 days in active growth | Toxic to pets |
| Caladium 'Fannie Munson' | Bright indirect light (just back from a sunny window) | Keep consistently moist during active growth; stop watering as leaves die back for dormancy | Toxic to pets |
| Caladium 'Florida Sweetheart' | Bright indirect light (just back from a sunny window) | Keep evenly moist in leaf, watering when the top 2 cm is dry (often every 4-7 days) | Toxic to pets |
| Caladium 'Puppy Love' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, often every 4-6 days in active growth | Toxic to pets |
| Caladium 'Red Flash' | Bright indirect light (just back from a sunny window) | Keep evenly moist in leaf, watering when the top 2 cm is dry (often every 4-7 days) | Toxic to pets |
| Caladium 'Thai Beauty' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, often every 4-6 days in active growth | Toxic to pets |
| Caladium 'White Queen' | Bright indirect light (just back from a sunny window) | Keep evenly moist while in leaf, watering when the top 2 cm is dry (often every 4-7 days) | Toxic to pets |
| Caladium Aaron | Bright indirect light (just back from a sunny window) | Keep evenly moist during active growth, roughly every 3-5 days | Toxic to pets |
| Caladium Candidum | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil begins to dry, roughly every 4-6 days in active growth | Toxic to pets |
| Caladium Florida Cardinal | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry during active growth, often every 4-7 days | Toxic to pets |
| Caladium Florida Elise | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil begins to dry, roughly every 4-6 days in active growth | Toxic to pets |
| Caladium Freida Hemple | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-6 days in active growth | Toxic to pets |
| Caladium Gingerland | Bright indirect light (just back from a sunny window) | Keep evenly moist during active growth, roughly every 3-5 days | Toxic to pets |
| Caladium lindenii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Caladium Miss Muffet | Bright indirect light (just back from a sunny window) | Keep evenly moist during active growth, roughly every 3-5 days | Toxic to pets |
| Caladium Moonlight | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil begins to dry, roughly every 4-6 days in active growth | Toxic to pets |
| Caladium Pink Cloud | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-7 days in active growth | Toxic to pets |
| Caladium Postman Joyner | Bright indirect light (just back from a sunny window) | Keep evenly moist during active growth, roughly every 3-5 days | Toxic to pets |
| Caladium Strawberry Star | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-7 days in active growth | Toxic to pets |
| Caladium White Christmas | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil begins to dry, roughly every 4-6 days in active growth | Toxic to pets |
| Calanthe sylvatica | Medium indirect light (a couple of metres from a window) | Keep evenly moist in growth, watering when the top 2-3 cm of mix feels dry, roughly every 4-6 days | Mildly toxic to pets |
| Calanthe triplicata | Medium indirect light (a couple of metres from a window) | Keep evenly moist year-round; water when the surface begins to dry | Pet-safe |
| Calanthe vestita | Bright indirect light (just back from a sunny window) | Water freely in summer growth; keep nearly dry through winter dormancy | Pet-safe |
| Calathea | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is just dry, every 4-7 days | Pet-safe |
| Calathea 'Flamestar' | Bright indirect light (just back from a sunny window) | Roughly weekly; water when the top 2-3 cm (about 1 inch) of soil feels dry | Pet-safe |
| Calathea 'Flamestar' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil dries, roughly every 5-7 days in growth | Pet-safe |
| Calathea 'Maui Queen' | Bright indirect light (just back from a sunny window) | Roughly once or twice a week in the growing season; water when the top inch of soil feels dry | Pet-safe |
| Calathea 'Vittata' Stripe Star | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil dries, roughly every 5-7 days in growth | Pet-safe |
| Calathea Albertii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Bachemiana | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Bacillaris | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil starts to dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Beauty Star | Bright indirect light (just back from a sunny window) | When the top 25% of the soil is dry, roughly every 5-7 days in summer and less in winter | Pet-safe |
| Calathea Binotii | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Calathea Burgundy (Setosa Compactstar) | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Burle-Marxii | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Compact Star | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Pet-safe |
| Calathea Concinna | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Calathea Crocata Tassmania | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is drying, roughly every 5-7 days in growth | Pet-safe |
| Calathea Crotalifera | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 4-7 days in warm weather | Pet-safe |
| Calathea Cylindrica | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Dottie | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 4-7 days | Pet-safe |
| Calathea Ecuatoriana | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Exotica | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Calathea Fasciata | Bright indirect light (just back from a sunny window) | Every 5-7 days, when the top inch of soil is just dry | Pet-safe |
| Calathea Fasciata (Round-leaf Calathea) | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days | Pet-safe |
| Calathea Freddie | Bright indirect light (just back from a sunny window) | When the top inch of soil is dry, roughly weekly in spring and summer and every 10-14 days in winter | Pet-safe |
| Calathea Leopardina | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Calathea Leopardina Splash | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just drying, roughly every 5-7 days in growth | Pet-safe |
| Calathea Lietzei | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Calathea Loeseneri (Brazilian Star) | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil dries, roughly every 5-7 days in growth | Pet-safe |
| Calathea Louisae | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Calathea Louisae 'Maui Queen' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days | Pet-safe |
| Calathea Louisae 'Thai Beauty' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days | Pet-safe |
| Calathea Lutea (Cuban Cigar) | Bright indirect light (just back from a sunny window) | Keep consistently moist; water when the top 2-3 cm dries, often every 3-5 days in heat | Pet-safe |
| Calathea Majestica Royal Blue | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Majestica Sanderiana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Medallion | Bright indirect light (just back from a sunny window) | When the top 25% of the soil dries out, roughly weekly | Pet-safe |
| Calathea Micans | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 4-6 days in growth | Pet-safe |
| Calathea Mirabilis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Misto | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 4-7 days | Pet-safe |
| Calathea Network | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 4-7 days | Pet-safe |
| Calathea Network Gold | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Calathea orbifolia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is just dry, roughly every 5-10 days in growth | Pet-safe |
| Calathea Orbifolia Silver | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Calathea Ornata 'Sanderiana' | Bright indirect light (just back from a sunny window) | When the top 2-3cm of soil feels dry, roughly weekly | Pet-safe |
| Calathea Ornata Beauty | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Ornata Dark Pink | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Calathea Picturata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Calathea Picturata 'Argentea' | Bright indirect light (just back from a sunny window) | Roughly weekly in growth; let the top 1-2cm dry first | Pet-safe |
| Calathea Picturata 'Argentea' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days | Pet-safe |
| Calathea Picturata 'Vandenheckei' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days | Pet-safe |
| Calathea Princeps | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Propinqua | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is drying, roughly every 5-7 days in growth | Pet-safe |
| Calathea Roseopicta 'Corona' | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 4-7 days | Pet-safe |
| Calathea Roseopicta 'Cynthia' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days | Pet-safe |
| Calathea Roseopicta 'Princess Jessie' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days | Pet-safe |
| Calathea Roseopicta 'Rosy' | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 4-7 days | Pet-safe |
| Calathea Roseopicta 'Surprise Star' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days | Pet-safe |
| Calathea Rufibarba Blue Grass | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil starts to dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Sanderiana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil dries, roughly every 5-7 days in growth | Pet-safe |
| Calathea Setosa | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Calathea Stromanthifolia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Tropic Snow | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Calathea Undulata | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil starts to dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Undulata 'Wavestar' | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil dries, roughly every 5-7 days in growth | Pet-safe |
| Calathea Veitchiana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Vittata | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top 1-2 inches of soil feels dry, roughly weekly in summer and less in winter | Pet-safe |
| Calathea Warscewiczii (Jungle Velvet) | Bright indirect light (just back from a sunny window) | Roughly weekly; when the top inch of soil is just dry | Pet-safe |
| Calathea Warscewiczii Jungle Velvet | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Warscewiczii Jungle Velvet Dark | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Warscewiczii Velvet Touch | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Calathea White Fusion | Bright indirect light (just back from a sunny window) | When the top 2-3cm of soil feels dry, roughly every 5-10 days | Pet-safe |
| Calathea White Star | Medium indirect light (a couple of metres from a window) | Water when the top 2-3 cm of soil is just dry, roughly every 5-7 days | Pet-safe |
| Calathea Wiotii | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil dries, about every 5-7 days while actively growing | Pet-safe |
| Calathea Yellow Fusion | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Zebrina Humilior | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Calathea Zebrina Starter | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just drying, roughly every 5-7 days in growth | Pet-safe |
| Calceolaria Herbeohybrida | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of compost feels dry, roughly every 2-4 days while in flower | Mildly toxic to pets |
| Calico Aster | Bright indirect light (just back from a sunny window) | Water to establish, then occasionally; tolerates dry soil | Pet-safe |
| Calico flower | Medium indirect light (a couple of metres from a window) | Once or twice a week during the growing season; once a week or less in winter. | Toxic to pets |
| California Fawn Lily | Medium indirect light (a couple of metres from a window) | Regular in spring growing season; minimal during summer dormancy | Mildly toxic to pets |
| California Fescue | Bright indirect light (just back from a sunny window) | Water every 10-14 days during the first growing season; established plants are summer-dormant and very drought-tolerant, needing little or no supplemental water | Pet-safe |
| California Giant Chain Fern | Medium indirect light (a couple of metres from a window) | Every 5–7 days; keep soil consistently moist but not waterlogged | Pet-safe |
| California Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 3–5 days in the growing season; every 7–10 days in winter (dormant period) | Pet-safe |
| California Nutmeg | Medium indirect light (a couple of metres from a window) | Every 7–10 days; do not allow to dry out fully, especially when young | Mildly toxic to pets |
| California Polypody | Medium indirect light (a couple of metres from a window) | Weekly in autumn to spring; reduce to monthly or suspend in summer | Mildly toxic to pets |
| California Shield Fern | Medium indirect light (a couple of metres from a window) | Every 5–7 days in growing season; reduce in winter | Pet-safe |
| Calla Lily | Bright indirect light (just back from a sunny window) | Keep consistently moist during active growth; reduce sharply for winter dormancy | Toxic to pets |
| Callicarpa americana | Bright indirect light (just back from a sunny window) | Water weekly while establishing; once established, only during prolonged drought | Mildly toxic to pets |
| Callicarpa bodinieri var. giraldii 'Profusion' | Bright indirect light (just back from a sunny window) | Water weekly during establishment and in dry spells; established plants are moderately drought-tolerant | Mildly toxic to pets |
| Callicarpa dichotoma | Bright indirect light (just back from a sunny window) | Water weekly during establishment and dry periods; moderately drought-tolerant once established | Mildly toxic to pets |
| Callicarpa japonica | Bright indirect light (just back from a sunny window) | Water weekly while establishing and during droughts; moderately drought-tolerant once settled | Mildly toxic to pets |
| Callisia Repens 'Gold' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 6-10 days | Mildly toxic to pets |
| Callisia Repens 'Pink Lady' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 6-10 days | Mildly toxic to pets |
| Callous-lipped Slipper Orchid | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of mix becomes dry, roughly every 5-7 days year-round | Mildly toxic to pets |
| Callus Slipper Orchid | Medium indirect light (a couple of metres from a window) | When the top of the mix begins to dry, roughly every 5-7 days | Pet-safe |
| Camas | Bright indirect light (just back from a sunny window) | Regular during spring growth; tolerates summer drought when dormant | Pet-safe |
| Cambodian Sonerila | Medium indirect light (a couple of metres from a window) | Every 4–7 days; keep medium consistently moist | Pet-safe |
| Cambria Orchid | Bright indirect light (just back from a sunny window) | When the surface of the mix begins to dry, roughly every 4-7 days | Pet-safe |
| Camellia 'Alba Plena' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, every 7-10 days during active growth | Pet-safe |
| Camellia 'Anticipation' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days during the growing season | Pet-safe |
| Camellia 'Bob Hope' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days during the growing season | Pet-safe |
| Camellia 'Brushfield's Yellow' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost or soil is dry, roughly every 5-7 days during active growth | Pet-safe |
| Camellia 'Debbie' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Camellia 'Dixie Knight' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil or compost is dry, roughly every 5-7 days in the growing season | Pet-safe |
| Camellia 'Donation' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry; keep evenly moist in late summer | Pet-safe |
| Camellia 'Elegans' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days during growth | Pet-safe |
| Camellia 'Hagoromo' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost or soil is dry, roughly every 5-7 days during active growth | Pet-safe |
| Camellia 'J.C. Williams' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days during the growing season | Pet-safe |
| Camellia 'Jury's Yellow' | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water deeply once or twice weekly in summer, especially during bud set | Pet-safe |
| Camellia 'Jury's Yellow' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days during active growth | Pet-safe |
| Camellia 'Kramer's Supreme' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days during active growth | Pet-safe |
| Camellia 'Midnight Magic' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 7-10 days during active growth | Pet-safe |
| Camellia 'Mine-no-Yuki' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days through the growing season | Pet-safe |
| Camellia 'Nuccio's Gem' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 7-10 days in active growth | Pet-safe |
| Camellia 'Spring Festival' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in the growing season | Pet-safe |
| Camellia 'Water Lily' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil or compost is dry, roughly every 5-7 days during the growing season | Pet-safe |
| Camellia 'Yuletide' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days during active growth | Pet-safe |
| Cameroon Cycad | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in the growing season; monthly in winter | Toxic to pets |
| Camille Dumb Cane | Medium indirect light (a couple of metres from a window) | Every 7–10 days in the growing season; every 14 days in winter | Toxic to pets |
| Campanula poscharskyana | Bright indirect light (just back from a sunny window) | When the top few centimetres of soil dry out, weekly in hot spells | Mildly toxic to pets |
| Campanula punctata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry; keep consistently moist in summer | Mildly toxic to pets |
| Campbell's Lycaste | Bright indirect light (just back from a sunny window) | Every 5–7 days in growth; reduce sharply after leaf drop | Pet-safe |
| Camphor-leaf Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–10 days in the growing season; every 2–3 weeks in winter | Pet-safe |
| Campos Porto Fuchsia | Bright indirect light (just back from a sunny window) | Regular during growth; reduce in winter | Pet-safe |
| Camu Camu | Bright indirect light (just back from a sunny window) | Every 2–4 days; keep consistently moist to wet | Pet-safe |
| Can Can Heuchera | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top 2-3 cm is dry, about every 5-7 days in summer | Pet-safe |
| Canada Violet | Medium indirect light (a couple of metres from a window) | Weekly; more frequently in warm or dry periods | Mildly toxic to pets |
| Canadian Lousewort | Medium indirect light (a couple of metres from a window) | Regularly; keep soil evenly moist | Mildly toxic to pets |
| Canadian Waterweed | Medium indirect light (a couple of metres from a window) | Permanently submerged | Pet-safe |
| Canary creeper | Bright indirect light (just back from a sunny window) | Water regularly to keep soil evenly moist, roughly every 5–7 days | Pet-safe |
| Canary Island Monanthes | Bright indirect light (just back from a sunny window) | Every 3–4 weeks in spring and summer; once monthly or less in autumn and winter | Mildly toxic to pets |
| Canary Reed Grass | Bright indirect light (just back from a sunny window) | Keep consistently moist to wet; tolerates standing water | Mildly toxic to pets |
| Candle plant | Bright indirect light (just back from a sunny window) | When the soil is fully dry; roughly every 2-3 weeks in growth, far less in summer dormancy | Toxic to pets |
| Candle Plant | Bright indirect light (just back from a sunny window) | Every 2–3 weeks during autumn and spring active growth; once a month or less in summer dormancy | Toxic to pets |
| candy corn plant | Bright indirect light (just back from a sunny window) | Every 7–10 days in active growth, every 14 days in winter | Pet-safe |
| Candy Corn Plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of potting mix is dry, roughly every 7-10 days | Pet-safe |
| Candy Stripe Ginger | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days during active growth | Mildly toxic to pets |
| Canna-leaved Peace Lily | Medium indirect light (a couple of metres from a window) | Every 7–10 days in the growing season; every 14 days in winter | Toxic to pets |
| Canton Fishtail Palm | Bright indirect light (just back from a sunny window) | Regularly; keep soil consistently moist | Mildly toxic to pets |
| Cape Cycad | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, every 7-12 days in growth | Toxic to pets |
| Cape Fockea | Bright indirect light (just back from a sunny window) | Every 10–14 days during spring and summer growing season; once a month or less in winter | Mildly toxic to pets |
| Cape Primrose | Bright indirect light (just back from a sunny window) | every 7–10 days in the growing season, every 14–21 days in winter | Pet-safe |
| Cape Primrose | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry; less in winter | Pet-safe |
| Cape Primrose | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Pet-safe |
| Cape Primrose 'Bristol's Party Girl' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Cape Sundew | Bright indirect light (just back from a sunny window) | Keep constantly moist; never let it dry out | Mildly toxic to pets |
| Cape Sundew | Bright indirect light (just back from a sunny window) | Keep substrate continuously moist via the tray method — sit pot in 1–2 cm of water at all times | Mildly toxic to pets |
| Cape York Lily | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days during active growth | Mildly toxic to pets |
| Caralluma acutangula | Bright indirect light (just back from a sunny window) | When the soil is fully dry, about every 10-14 days in summer; minimal in winter | Mildly toxic to pets |
| Caramel Marble | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Toxic to pets |
| Cardboard Palm | Bright indirect light (just back from a sunny window) | Every 1-2 weeks in summer; roughly halve in autumn/winter | Toxic to pets |
| Cardinal Flower Sinningia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Cardinal Sage | Bright indirect light (just back from a sunny window) | Freely during active growth; sparingly in winter | Pet-safe |
| Carex pendula | Medium indirect light (a couple of metres from a window) | Keep soil moist; water in dry spells | Mildly toxic to pets |
| Carla Black's Anthurium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (about 1 inch) of substrate dries out | Toxic to pets |
| Carmine Begonia | Bright indirect light (just back from a sunny window) | When the top 1 inch of soil is dry | Toxic to pets |
| Carnation of India | Bright indirect light (just back from a sunny window) | Every 5-7 days in growth, every 10-14 days in winter | Toxic to pets |
| Carnival goldfish plant | Bright indirect light (just back from a sunny window) | Water when the top third of the growing medium dries out — roughly every 7–10 days in the growing season, reducing to every 14 days in winter. | Pet-safe |
| Carolina Hemlock | Bright indirect light (just back from a sunny window) | Weekly during establishment; monthly deep watering once established in cool climates | Pet-safe |
| Carolina Mosquito Fern | Bright indirect light (just back from a sunny window) | Permanently floating on water surface | Pet-safe |
| Carolina Mosquito Fern | Medium indirect light (a couple of metres from a window) | Aquatic — free-floating on still or slow-moving water permanently | Pet-safe |
| Carolina Spring Beauty | Medium indirect light (a couple of metres from a window) | Moderate during active spring growth; essentially none during summer–winter dormancy. | Pet-safe |
| Caryota No | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Caryota Obtusa | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Cascade White Trailing Lobelia | Bright indirect light (just back from a sunny window) | When the top 2 cm of compost is dry, roughly every 2-4 days (more frequent in hot weather) | Toxic to pets |
| Cassytha Rhipsalis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Cat Palm | Bright indirect light (just back from a sunny window) | Keep consistently moist | Pet-safe |
| Cat's Jaws | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in growth and much less in summer rest | Mildly toxic to pets |
| Catasetum expansum | Bright indirect light (just back from a sunny window) | Heavily during growth; stop almost entirely once leaves fall | Mildly toxic to pets |
| Catasetum fimbriatum | Bright indirect light (just back from a sunny window) | Heavily in active growth; withhold almost entirely after leaf drop | Mildly toxic to pets |
| Catasetum macrocarpum | Bright indirect light (just back from a sunny window) | Heavily during active growth; stop almost entirely once leaves drop | Mildly toxic to pets |
| Catasetum Orchid | Bright indirect light (just back from a sunny window) | Heavy in summer growth; none during winter dormancy | Mildly toxic to pets |
| Catawba rhododendron | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 7–14 days once established | Toxic to pets |
| Catawba Rhododendron 'Roseum Elegans' | Bright indirect light (just back from a sunny window) | About weekly, deeper in heat and drought; water when the top 3-5 cm of soil is dry | Toxic to pets |
| Catesby's Trillium | Medium indirect light (a couple of metres from a window) | Consistently moist in spring; reduce after summer dormancy | Mildly toxic to pets |
| Cathaya argyrophylla | Bright indirect light (just back from a sunny window) | When the top few cm of soil begins to dry, roughly every 5-7 days for young plants in growth | Mildly toxic to pets |
| Cathedral Begonia | Medium indirect light (a couple of metres from a window) | When the top 2 cm of compost feels dry, every 5-7 days in the growing season | Toxic to pets |
| Cathedral Bells | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, approximately every 10-14 days in summer | Toxic to pets |
| Catlin's Giant Bugle | Medium indirect light (a couple of metres from a window) | Once or twice weekly during establishment; once weekly once established | Mildly toxic to pets |
| Cattleya 'Why Not' | Bright indirect light (just back from a sunny window) | When the bark dries, roughly every 5-7 days in growth | Pet-safe |
| Cattleya luteola | Bright indirect light (just back from a sunny window) | When the mix approaches dry, roughly every 5-7 days in growth | Pet-safe |
| Cattleya orchid | Bright indirect light (just back from a sunny window) | When the bark mix is nearly dry, every 5-10 days | Pet-safe |
| Cattleya walkeriana | Bright indirect light (just back from a sunny window) | When the mix is nearly dry, roughly every 5-7 days in growth; reduced after flowering | Pet-safe |
| Caucasian Comfrey | Medium indirect light (a couple of metres from a window) | Every 5–7 days during dry spells; self-sufficient in rainy climates | Mildly toxic to pets |
| Caucasian Lily | Bright indirect light (just back from a sunny window) | Moderate — keep soil consistently moist but not waterlogged | Toxic to pets |
| Cautley Roscoea | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry during the growing season, approximately every 7-14 days; reduce to very low or none in winter dormancy | Mildly toxic to pets |
| Cavatine pieris | Bright indirect light (just back from a sunny window) | Weekly; keep consistently moist | Toxic to pets |
| Cavendish's Trichocentrum | Bright indirect light (just back from a sunny window) | Every 7-10 days in growth; every 14-21 days during the winter rest | Pet-safe |
| Cebu Blue Pothos | Bright indirect light (just back from a sunny window) | When top 2-3cm of soil is dry; roughly every 7-14 days indoors | Toxic to pets |
| Cedar Sage | Medium indirect light (a couple of metres from a window) | Moderate; water when top 5 cm of soil is dry | Pet-safe |
| Celandine Poppy | Medium indirect light (a couple of metres from a window) | 2 times per week during spring and early summer; reduce as plant self-senesces | Mildly toxic to pets |
| Celebes Pepper | Bright indirect light (just back from a sunny window) | Every 5–7 days; allow top 2–3 cm to dry between waterings | Mildly toxic to pets |
| Cephalotaxus 'Fastigiata' | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, roughly weekly while establishing | Mildly toxic to pets |
| Cephalotus follicularis 'Eden Black' | Bright indirect light (just back from a sunny window) | Keep lightly moist; let the surface just begin to dry between waterings | Mildly toxic to pets |
| Ceratophyllum demersum | Medium indirect light (a couple of metres from a window) | Permanently submerged; 25-40% water change weekly | Mildly toxic to pets |
| Ceratopteris cornuta | Medium indirect light (a couple of metres from a window) | Permanently submerged/floating; 25-40% water change weekly | Mildly toxic to pets |
| Ceratopteris thalictroides | Medium indirect light (a couple of metres from a window) | Permanently submerged; 25-40% water change weekly | Mildly toxic to pets |
| Ceratozamia hildae | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly weekly in growth | Toxic to pets |
| Ceratozamia mexicana | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly weekly in growth | Toxic to pets |
| Ceratozamia robusta | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly weekly in growth | Toxic to pets |
| Cercestis Mirabilis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Cercestis Stigmaticus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Cercidiphyllum japonicum | Bright indirect light (just back from a sunny window) | Weekly, keeping the soil consistently moist, especially in summer | Mildly toxic to pets |
| Cercidiphyllum japonicum 'Pendulum' | Bright indirect light (just back from a sunny window) | Weekly, keeping soil consistently moist, particularly in summer | Mildly toxic to pets |
| Ceropegia Ampliata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 10-14 days in summer | Mildly toxic to pets |
| Ceropegia distincta | Bright indirect light (just back from a sunny window) | When soil is dry, roughly every 10-14 days in growth; nearly dry in winter | Mildly toxic to pets |
| Ceropegia Haygarthii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 10-14 days in summer | Mildly toxic to pets |
| Ceropegia Sandersonii | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 10-14 days in growth | Mildly toxic to pets |
| Ceropegia woodii f. variegata | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in growth | Pet-safe |
| Cettos Achimenes | Bright indirect light (just back from a sunny window) | Evenly moist during the growing season; completely dry during winter dormancy | Pet-safe |
| Ceylon Cardamom | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water when the surface feels just dry, approximately every 5-7 days | Mildly toxic to pets |
| Chain Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| Chain Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 4-6 days | Mildly toxic to pets |
| Chain Pleurothallis | Bright indirect light (just back from a sunny window) | Every 2-3 days; do not allow to dry completely | Pet-safe |
| Chain Rhipsalis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, approximately every 7-10 days in summer; reduce to every 14-21 days in winter | Pet-safe |
| Chamaedorea Hooperiana | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Chamaedorea Microspadix | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Chamaeranthemum gaudichaudii | Medium indirect light (a couple of metres from a window) | Keep consistently moist, watering when the surface just begins to dry, about every 4-6 days | Mildly toxic to pets |
| Chamaeranthemum venosum | Medium indirect light (a couple of metres from a window) | Keep evenly moist, watering as the surface starts to dry, about every 4-6 days | Mildly toxic to pets |
| Chaparensis Masdevallia | Medium indirect light (a couple of metres from a window) | Daily in hot weather; every 2–3 days in cooler seasons | Pet-safe |
| Cheerful Dancing Ginger | Medium indirect light (a couple of metres from a window) | 2–3 times per week in the growing season; minimal during dormancy | Mildly toxic to pets |
| Cherokee Chief Dogwood | Bright indirect light (just back from a sunny window) | Weekly deep watering; more in summer drought | Pet-safe |
| Cheshunt Pine | Bright indirect light (just back from a sunny window) | Water regularly to keep soil evenly moist; once or twice weekly in summer | Mildly toxic to pets |
| Chestnut-Flowered Sage | Medium indirect light (a couple of metres from a window) | Regular — keep soil evenly moist through the growing season | Mildly toxic to pets |
| Chiapas Air Plant | Bright indirect light (just back from a sunny window) | Once weekly | Pet-safe |
| Chiapas Arrowhead Plant | Medium indirect light (a couple of metres from a window) | Every 7–10 days in the growing season; every 14 days in winter | Toxic to pets |
| Chiapas Sage | Medium indirect light (a couple of metres from a window) | Moderate — water when the top 2 cm of soil is dry | Pet-safe |
| Chilean Bamboo | Bright indirect light (just back from a sunny window) | Weekly during establishment; twice weekly in dry summer heat | Pet-safe |
| Chilean Bromeliad | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in summer | Mildly toxic to pets |
| Chilean Butterwort | Bright indirect light (just back from a sunny window) | Water from below by brief tray sitting every 5-10 days when the soil surface begins to dry; dry out slightly between waterings in winter | Pet-safe |
| Chilean Hard Fern | Medium indirect light (a couple of metres from a window) | Keep consistently moist — water when the top 1-2 cm of soil is dry, typically every 5-7 days indoors | Pet-safe |
| Chimanta sun pitcher | Bright indirect light (just back from a sunny window) | Daily; media must remain permanently moist | Pet-safe |
| Chimera Dragon Orchid | Medium indirect light (a couple of metres from a window) | Continuously moist; water every 1–2 days; never allow to dry out | Pet-safe |
| Chin Cactus | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring/summer; every 3–4 weeks in autumn; withhold in winter | Pet-safe |
| Chin Cactus | Bright indirect light (just back from a sunny window) | When the soil is fully dry, about every 10-14 days in growth; none in winter | Pet-safe |
| China Girl dogwood | Bright indirect light (just back from a sunny window) | Weekly in first 2–3 years; every 1–2 weeks in dry periods once established | Mildly toxic to pets |
| Chinese astilbe | Medium indirect light (a couple of metres from a window) | Once or twice per week; more in hot weather | Pet-safe |
| Chinese Astilbe 'Visions' | Bright indirect light (just back from a sunny window) | Keep soil reliably moist; water every 3-5 days in summer | Mildly toxic to pets |
| Chinese Astilbe 'Visions' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer; more drought-tolerant than most astilbes | Mildly toxic to pets |
| Chinese Brake Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days in spring and summer | Mildly toxic to pets |
| Chinese Cardamom | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water when the surface just begins to dry, roughly every 4-6 days in warm conditions | Mildly toxic to pets |
| Chinese Dwarf Bamboo | Medium indirect light (a couple of metres from a window) | Once or twice per week during the growing season; reduce in winter | Pet-safe |
| Chinese Elm Bonsai | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is just drying, often every 2-4 days in summer | Mildly toxic to pets |
| Chinese Enkianthus | Bright indirect light (just back from a sunny window) | Regularly throughout the growing season | Mildly toxic to pets |
| Chinese Fan Palm | Bright indirect light (just back from a sunny window) | Roughly weekly in spring and summer; every 10-14 days in winter | Mildly toxic to pets |
| Chinese Fan Palm | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil dries out, roughly every 7-14 days | Pet-safe |
| Chinese Ground Orchid | Bright indirect light (just back from a sunny window) | Keep evenly moist during active growth (spring and summer), watering every 5-7 days; allow to dry out naturally in autumn as the plant goes dormant | Pet-safe |
| Chinese Hemlock | Bright indirect light (just back from a sunny window) | Every 1–2 weeks when young; every 2–3 weeks once established | Pet-safe |
| Chinese Ixora | Bright indirect light (just back from a sunny window) | Every 5–7 days; keep soil consistently moist but never waterlogged | Mildly toxic to pets |
| Chinese Jade | Bright indirect light (just back from a sunny window) | Every 2–4 weeks (allow soil to dry completely between waterings) | Mildly toxic to pets |
| Chinese money plant | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, every 7-10 days | Pet-safe |
| Chinese Plum Yew | Medium indirect light (a couple of metres from a window) | Keep evenly moist; weekly in dry spells, more while establishing | Mildly toxic to pets |
| Chinese Premna | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil dries, often daily in warm growth | Mildly toxic to pets |
| Chinese Tupelo | Bright indirect light (just back from a sunny window) | Regularly during establishment; once or twice a week in dry spells | Pet-safe |
| Chinese Tylecodon | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in the growing season (autumn–spring); minimal or none in summer | Toxic to pets |
| Chinese Windmill Palm 'Bulgaria' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly weekly in summer | Toxic to pets |
| Chinese witch hazel | Bright indirect light (just back from a sunny window) | Regularly during establishment (first 2–3 years); once established, during dry periods in summer | Mildly toxic to pets |
| Chinese woodbine | Medium indirect light (a couple of metres from a window) | Weekly; do not allow the root zone to dry out | Mildly toxic to pets |
| Chinese Yew | Medium indirect light (a couple of metres from a window) | Weekly during establishment; every 1–2 weeks once established | Toxic to pets |
| Chiric Sanango | Bright indirect light (just back from a sunny window) | Every 5-7 days in active growth, every 10-14 days in winter | Toxic to pets |
| Chirita 'Aiko' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 7-10 days | Mildly toxic to pets |
| Chirita micromusa | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the soil surface just begins to dry, roughly every 4-7 days | Pet-safe |
| Chirita sinensis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Mildly toxic to pets |
| Chocolate Chip Bugle | Medium indirect light (a couple of metres from a window) | Once or twice weekly until established; once weekly thereafter | Mildly toxic to pets |
| Chocolate orchid | Bright indirect light (just back from a sunny window) | When the mix is nearly dry, roughly every 5-9 days | Pet-safe |
| Chocolate Soldier episcia | Bright indirect light (just back from a sunny window) | Every 5–7 days in growing season, every 10–14 days in winter | Pet-safe |
| Choisya 'White Dazzler' | Bright indirect light (just back from a sunny window) | Water weekly while establishing; mature plants need water only in dry spells | Mildly toxic to pets |
| Christmas cactus | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, every 7-10 days | Pet-safe |
| Christmas Heliconia | Bright indirect light (just back from a sunny window) | Weekly, or more frequently in warm weather | Mildly toxic to pets |
| Christmas Jewels Bromeliad | Bright indirect light (just back from a sunny window) | Refresh central cup weekly; water soil every 2–3 weeks | Pet-safe |
| Christmas Orchid | Bright indirect light (just back from a sunny window) | When the bark dries, roughly every 5-7 days in growth | Pet-safe |
| Christmas Orchid | Bright indirect light (just back from a sunny window) | When the potting medium is nearly dry, approximately every 7-10 days in active growth; reduce to every 14-21 days in autumn | Pet-safe |
| Christmas Rose | Medium indirect light (a couple of metres from a window) | Keep evenly moist while establishing and during summer drought; established plants tolerate moderate dryness | Toxic to pets |
| Chusan Palm | Bright indirect light (just back from a sunny window) | Weekly in summer, monthly in winter | Pet-safe |
| Cilician Winter Aconite | Medium indirect light (a couple of metres from a window) | Moist during late winter and spring growth; dry to moderate when dormant | Toxic to pets |
| Cinnamon Fern | Medium indirect light (a couple of metres from a window) | 2-3 times per week; keep consistently moist | Pet-safe |
| Cissus Discolor | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, about every 4-7 days in warmth | Pet-safe |
| Cissus javana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days in growth | Mildly toxic to pets |
| Cissus rhombifolia 'Ellen Danica' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Cissus rotundifolia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Clamshell Orchid | Medium indirect light (a couple of metres from a window) | Every 5–7 days; allow the mix to almost dry before rewetting | Pet-safe |
| Clamshell Orchid | Bright indirect light (just back from a sunny window) | Every 5–7 days in growth; every 10–14 days in winter | Pet-safe |
| Clarke's Cranesbill | Bright indirect light (just back from a sunny window) | Regularly during establishment; once established, once a week in dry periods | Pet-safe |
| Clasping Sage | Bright indirect light (just back from a sunny window) | Weekly to fortnightly | Pet-safe |
| Clematis 'Duchess of Edinburgh' | Bright indirect light (just back from a sunny window) | Once or twice a week during the growing season | Toxic to pets |
| Clematis 'Hagley Hybrid' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, about weekly in the growing season | Toxic to pets |
| Clematis 'Henryi' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, about weekly in summer | Toxic to pets |
| Clematis 'Miss Bateman' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, about weekly in the growing season | Toxic to pets |
| Clematis 'Nelly Moser' | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water deeply once or twice a week in dry spells | Toxic to pets |
| Clematis 'Piilu' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 5-7 days during the growing season | Toxic to pets |
| Clematis florida 'Sieboldii' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 5-7 days in the growing season | Toxic to pets |
| Cleopatra Begonia | Bright indirect light (just back from a sunny window) | When the top 1–2 cm of soil is dry | Toxic to pets |
| Cleopatra flame violet | Medium indirect light (a couple of metres from a window) | When the surface of the soil begins to dry — roughly every 5–7 days in warm conditions. | Pet-safe |
| Clethra alnifolia | Bright indirect light (just back from a sunny window) | Keep soil moist; water weekly or more in dry weather, tolerant of wet ground | Mildly toxic to pets |
| Clethra alnifolia 'Hummingbird' | Bright indirect light (just back from a sunny window) | Keep soil moist; water weekly or more in dry weather, tolerant of wet ground | Mildly toxic to pets |
| Clethra alnifolia 'Ruby Spice' | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water deeply 1-2 times weekly in the first two seasons and during drought | Mildly toxic to pets |
| Clethra barbinervis | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water deeply weekly in the first two seasons and during dry spells | Mildly toxic to pets |
| Cliff African violet | Bright indirect light (just back from a sunny window) | Every 10–14 days | Pet-safe |
| Cliff African Violet | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Cliff Brake Fern | Bright indirect light (just back from a sunny window) | Allow the top half of the soil to dry out between waterings, roughly every 10-14 days | Mildly toxic to pets |
| Cliff Cotyledon | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer, every 3–4 weeks in winter | Toxic to pets |
| Cliff Cotyledon | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, approximately every 14 days in summer | Toxic to pets |
| Climbing Chamaedorea | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Climbing Culcasia | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Climbing Fetterbush | Medium indirect light (a couple of metres from a window) | Frequent; keep consistently moist to wet | Toxic to pets |
| Climbing Hydrangea | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; water deeply weekly in the first 2-3 years and during dry spells | Toxic to pets |
| Climbing Oleander | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; allow topsoil to dry slightly between waterings | Toxic to pets |
| Climbing Onion | Bright indirect light (just back from a sunny window) | Every 1–2 weeks while vining; withhold water during dry-season dormancy | Toxic to pets |
| Climbing Sundew | Bright indirect light (just back from a sunny window) | Tray method autumn–spring; bone dry summer dormancy | Mildly toxic to pets |
| Clinacanthus nutans | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, around every 3-5 days in warm weather | Mildly toxic to pets |
| Clinton's Wood Fern | Medium indirect light (a couple of metres from a window) | Keep consistently moist; water weekly in dry periods | Mildly toxic to pets |
| Clivia | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Clivia 'Belgian Hybrid' | Medium indirect light (a couple of metres from a window) | Water when the top few cm are dry in growth; keep nearly dry through the winter rest | Toxic to pets |
| Clivia 'Doris Joy' | Bright indirect light (just back from a sunny window) | When the top few cm are dry in growth (every 7-14 days); much less in the winter rest | Toxic to pets |
| Cloth of Gold Saxifrage | Medium indirect light (a couple of metres from a window) | Every 5–7 days; reduce in winter | Pet-safe |
| Cloud Nine Dogwood | Bright indirect light (just back from a sunny window) | Weekly during the growing season; reduce in winter | Mildly toxic to pets |
| Clouds of Perfume Woodland Phlox | Medium indirect light (a couple of metres from a window) | Weekly during the growing season; do not allow soil to dry out in summer | Pet-safe |
| Clove Vine | Bright indirect light (just back from a sunny window) | Every 5–7 days during the growing season; reduce in winter | Mildly toxic to pets |
| Clowes' Miltonia | Bright indirect light (just back from a sunny window) | Every 3–4 days in growth, reduce slightly in winter | Pet-safe |
| Clowes' Miltonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of the mix feels dry, roughly every 5-7 days in summer | Pet-safe |
| Clubmoss cassiope | Bright indirect light (just back from a sunny window) | Regularly; soil should remain consistently moist throughout the growing season | Pet-safe |
| Clumping Bamboo | Bright indirect light (just back from a sunny window) | Twice to three times per week during establishment; weekly once established | Pet-safe |
| Clumping Blue Bamboo | Bright indirect light (just back from a sunny window) | Consistently moist throughout the growing season; water every 5–7 days or as needed to keep soil from drying out | Pet-safe |
| Cluster-Headed Mezobromelia | Medium indirect light (a couple of metres from a window) | Keep central tank filled; water substrate when top inch is dry, approximately every 7-10 days | Pet-safe |
| Clustered Dendrobium | Bright indirect light (just back from a sunny window) | Every 5-7 days in summer; reduce sharply to monthly or less in winter | Pet-safe |
| Clustered Sinningia | Bright indirect light (just back from a sunny window) | Every 7–10 days during the growing season; withhold entirely during dormancy | Pet-safe |
| Clustered Specklinia | Bright indirect light (just back from a sunny window) | Every 2-3 days; keep medium consistently moist | Pet-safe |
| Clustering Fishtail Palm | Bright indirect light (just back from a sunny window) | Water 1–2 times per week in active growth, reducing to weekly in winter | Toxic to pets |
| Clytie kohleria | Bright indirect light (just back from a sunny window) | Every 7–10 days in growth; sparingly in winter | Pet-safe |
| Coarctata Haworthia | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Coast Redwood Bonsai | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil starts to dry, often daily in warm weather | Mildly toxic to pets |
| Coastal Doghobble | Medium indirect light (a couple of metres from a window) | Every 5–7 days; regular deep watering essential in dry periods | Toxic to pets |
| Coastal Leucothoe | Medium indirect light (a couple of metres from a window) | Regular; keep evenly moist | Toxic to pets |
| Cobra Bird's Nest Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Cobweb Spiderwort | Bright indirect light (just back from a sunny window) | Every 4–6 days in summer; every 10–14 days in winter | Mildly toxic to pets |
| Cochinchina Lady Palm | Medium indirect light (a couple of metres from a window) | Every 5–7 days in the growing season; every 10–14 days in winter | Pet-safe |
| Cockleshell butterfly orchid | Bright indirect light (just back from a sunny window) | Weekly in growth; reduce in winter | Pet-safe |
| Cockleshell Orchid | Bright indirect light (just back from a sunny window) | When the bark mix is nearly dry, roughly every 5-8 days | Pet-safe |
| Coconut-Scented Bulbophyllum | Medium indirect light (a couple of metres from a window) | Every 3–4 days during growth; every 6–10 days in winter | Pet-safe |
| Cocoon Plant | Bright indirect light (just back from a sunny window) | Every 2–3 weeks during active growth (spring and autumn); once a month in summer and winter | Toxic to pets |
| Codonanthe crassifolia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Mildly toxic to pets |
| Codonanthe gracilis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Mildly toxic to pets |
| Codonatanthus 'Sunset' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Mildly toxic to pets |
| Coelogyne cristata | Bright indirect light (just back from a sunny window) | Every 4-7 days in growth; sparingly during the winter rest | Pet-safe |
| Coelogyne flaccida | Bright indirect light (just back from a sunny window) | Every 4-7 days in growth; reduced over winter | Pet-safe |
| Coelogyne massangeana | Bright indirect light (just back from a sunny window) | Every 3-6 days in growth; slightly reduced but rarely dry in winter | Pet-safe |
| Coelogyne nitida | Bright indirect light (just back from a sunny window) | Water 2-3 times weekly in growth; reduce to roughly weekly in the cool winter rest | Mildly toxic to pets |
| Coelogyne pandurata | Bright indirect light (just back from a sunny window) | Water freely in active growth, about every 3-5 days, easing to a lighter winter regime | Mildly toxic to pets |
| Coffee Plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost feels dry, roughly every 5-7 days in summer and less in winter | Toxic to pets |
| Coin-Leaf Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring/summer; reduce to every 2–3 weeks in winter | Pet-safe |
| Cole's Prostrate Hemlock | Medium indirect light (a couple of metres from a window) | Every 1–2 weeks; do not allow soil to dry out | Pet-safe |
| Coleus | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, every 4-7 days | Toxic to pets |
| Coleus | Bright indirect light (just back from a sunny window) | Every 5–7 days in spring/summer; every 7–10 days in winter | Toxic to pets |
| Colima Butterwort | Bright indirect light (just back from a sunny window) | Water every 5–7 days; allow the surface to slightly dry between waterings | Pet-safe |
| Collins' Heliconia | Bright indirect light (just back from a sunny window) | Every 2–3 days in summer, weekly in cooler months | Mildly toxic to pets |
| Colocasia 'Black Magic' | Bright indirect light (just back from a sunny window) | Keep soil constantly moist to wet; never let it dry out | Toxic to pets |
| Colocasia 'Illustris' (Imperial Taro) | Bright indirect light (just back from a sunny window) | Keep soil consistently moist to wet; check every 2-4 days in active growth | Toxic to pets |
| Colocasia 'Mojito' | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; often 2-3+ times per week in active growth | Toxic to pets |
| Colocasia 'Pink China' | Bright indirect light (just back from a sunny window) | Keep soil consistently moist to wet; water whenever the top inch starts to dry | Toxic to pets |
| Colocasia Blue Hawaii | Bright indirect light (just back from a sunny window) | Keep soil constantly moist; water every 2-4 days, daily in summer heat | Toxic to pets |
| Colocasia Elena | Bright indirect light (just back from a sunny window) | Keep soil constantly moist; water every 2-4 days, daily in summer | Toxic to pets |
| Colocasia Fontanesii | Bright indirect light (just back from a sunny window) | Keep constantly moist to wet; check every 2-4 days, never let it dry out | Toxic to pets |
| Colocasia Gigantea | Bright indirect light (just back from a sunny window) | Keep soil constantly moist; water every 2-3 days, daily in summer heat | Toxic to pets |
| Colocasia Hilo Beauty | Bright indirect light (just back from a sunny window) | Keep evenly moist to wet; check every 2-4 days, watering before the surface fully dries | Toxic to pets |
| Colocasia Nancy's Revenge | Bright indirect light (just back from a sunny window) | Keep soil constantly moist; water every 2-4 days, daily in summer | Toxic to pets |
| Colocasia Pharaoh's Mask | Bright indirect light (just back from a sunny window) | Keep soil constantly moist; water every 2-4 days, daily in summer heat | Toxic to pets |
| Colocasia Puckered Up | Bright indirect light (just back from a sunny window) | Keep soil constantly moist; water every 2-4 days, daily in summer heat | Toxic to pets |
| Colombian Zamia | Bright indirect light (just back from a sunny window) | Every 10–21 days; reduce in winter when cold | Toxic to pets |
| Coloratus Euonymus | Bright indirect light (just back from a sunny window) | Weekly while establishing, then every 10-14 days once mature | Toxic to pets |
| Columbia Lewisia | Bright indirect light (just back from a sunny window) | Moderate; reduce in late summer and winter | Mildly toxic to pets |
| Columbian Peperomia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Columbine | Medium indirect light (a couple of metres from a window) | Moderate; water during dry spells | Toxic to pets |
| Columbine 'McKana Giant' | Bright indirect light (just back from a sunny window) | Once or twice a week in dry weather; keep soil evenly moist during flowering | Toxic to pets |
| Columbine 'Nora Barlow' | Bright indirect light (just back from a sunny window) | Once or twice a week during dry spells; water stress shortens the flowering season | Toxic to pets |
| Columnea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 5-7 days | Pet-safe |
| Columnea 'Aladdin's Lamp' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-9 days in growth | Pet-safe |
| Columnea 'Inferno' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-9 days in growth | Pet-safe |
| Columnea 'Light Prince' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Columnea 'Robin' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-9 days in growth | Pet-safe |
| Columnea hirta | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-9 days in growth | Pet-safe |
| Columnea linearis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is just dry, roughly every 5-7 days in growth | Pet-safe |
| Columnea microphylla | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is just dry, roughly every 5-7 days in growth | Pet-safe |
| Common African Violet | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of potting mix is dry, roughly every 7-10 days | Pet-safe |
| Common Bistort | Medium indirect light (a couple of metres from a window) | Frequently — keep soil consistently moist | Mildly toxic to pets |
| Common blue violet | Medium indirect light (a couple of metres from a window) | Every 5–10 days; tolerates wet soil | Pet-safe |
| Common box | Medium indirect light (a couple of metres from a window) | Weekly during establishment; monthly once established in the ground | Toxic to pets |
| Common Boxwood 'Suffruticosa' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly weekly in summer | Toxic to pets |
| Common Bugle | Medium indirect light (a couple of metres from a window) | Moderate; consistent moisture preferred | Mildly toxic to pets |
| Common Butterwort | Bright indirect light (just back from a sunny window) | Keep permanently wet in the growing season; stand in shallow pure water | Mildly toxic to pets |
| Common Cow-wheat | Medium indirect light (a couple of metres from a window) | Moderate; keep soil evenly moist but never waterlogged | Mildly toxic to pets |
| Common Dog Violet | Medium indirect light (a couple of metres from a window) | Water occasionally; keep soil consistently moist but not waterlogged. | Pet-safe |
| common dogwood | Bright indirect light (just back from a sunny window) | Weekly in first season; largely self-sufficient once established | Mildly toxic to pets |
| Common Foxglove | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; water weekly in dry spells | Toxic to pets |
| Common Goldfish Plant | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry | Pet-safe |
| Common Grape Hyacinth | Bright indirect light (just back from a sunny window) | Weekly in spring during active growth; dry during summer dormancy | Mildly toxic to pets |
| Common Hepatica | Medium indirect light (a couple of metres from a window) | Every 5–7 days in the growing season; reduce in summer dormancy | Mildly toxic to pets |
| Common Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 2–4 days; keep soil evenly moist | Pet-safe |
| Common Nardoo | Bright indirect light (just back from a sunny window) | Keep permanently in water or wet mud | Toxic to pets |
| Common Polypody | Medium indirect light (a couple of metres from a window) | Every 10–14 days; tolerates extended dry periods once established | Pet-safe |
| Common Pothos | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry, roughly every 7-12 days | Toxic to pets |
| Common Rhododendron | Bright indirect light (just back from a sunny window) | Weekly during dry periods; established plants are tolerant but flower best with consistent moisture | Toxic to pets |
| Common Snowdrop | Medium indirect light (a couple of metres from a window) | Naturally moisture-retentive soil; supplemental watering in dry spells during growth | Toxic to pets |
| Common Spotted Orchid | Bright indirect light (just back from a sunny window) | Relies on natural rainfall | Mildly toxic to pets |
| Common Water Starwort | Medium indirect light (a couple of metres from a window) | Permanently submerged or marginal | Pet-safe |
| Common Water Starwort | Medium indirect light (a couple of metres from a window) | Fully submerged or surface-floating — permanent aquatic | Mildly toxic to pets |
| Common Witch Hazel | Medium indirect light (a couple of metres from a window) | Roughly every 7-10 days during establishment; established plants need watering every 10-14 days in dry periods | Mildly toxic to pets |
| Commutatum Fern | Medium indirect light (a couple of metres from a window) | Every 5–7 days in growing season; every 10–14 days in winter | Pet-safe |
| Compact Angraecum | Bright indirect light (just back from a sunny window) | Every 2–4 days in summer; every 7–14 days in winter | Pet-safe |
| Compact bog rosemary | Bright indirect light (just back from a sunny window) | Consistently moist; never allow to dry out | Toxic to pets |
| Compact Dumb Cane | Medium indirect light (a couple of metres from a window) | Every 7–10 days in summer; every 14 days in winter | Toxic to pets |
| Compact Japanese Umbrella Pine | Bright indirect light (just back from a sunny window) | Weekly during growing season; reduce in winter | Pet-safe |
| Compact Plume Japanese Cedar | Bright indirect light (just back from a sunny window) | Regularly throughout the growing season; reduce slightly in winter | Pet-safe |
| Comparettia falcata | Bright indirect light (just back from a sunny window) | Keep roots evenly moist, watering as they approach (but before they reach) dryness, often every 2-3 days | Mildly toxic to pets |
| Compressed Peperomia | Medium indirect light (a couple of metres from a window) | Every 2–3 weeks (allow compost to dry substantially between waterings) | Pet-safe |
| Confetti Polka Dot Plant | Bright indirect light (just back from a sunny window) | Every 5–7 days in growth; reduce in winter | Pet-safe |
| Confused Huernia | Bright indirect light (just back from a sunny window) | Every 14–21 days during active growth (spring–autumn); once monthly or less in winter | Pet-safe |
| Congo cockatoo impatiens | Bright indirect light (just back from a sunny window) | Every 3–5 days; keep soil evenly moist | Pet-safe |
| Conophytum (Living Pebbles) | Bright indirect light (just back from a sunny window) | Only when soil is bone-dry during the autumn-to-spring growth season; keep nearly dry in summer dormancy | Mildly toxic to pets |
| Conophytum Calculus | Bright indirect light (just back from a sunny window) | During autumn-to-spring growth, every 1-2 weeks; none through summer dormancy | Mildly toxic to pets |
| Conophytum ficiforme | Bright indirect light (just back from a sunny window) | Lightly in autumn and winter when in growth; keep dry through summer dormancy | Mildly toxic to pets |
| Conophytum Minutum | Bright indirect light (just back from a sunny window) | During the cool-season growth (autumn to spring), every 1-2 weeks; kept dry through summer dormancy | Mildly toxic to pets |
| Conophytum Obcordellum | Bright indirect light (just back from a sunny window) | Seasonally; water in autumn and winter growth, keep dry through summer dormancy | Mildly toxic to pets |
| Conophytum Pageae | Bright indirect light (just back from a sunny window) | Through autumn-to-spring growth, every 1-2 weeks; withheld over summer dormancy | Mildly toxic to pets |
| Conophytum Pellucidum | Bright indirect light (just back from a sunny window) | During autumn-to-spring growth, every 1-2 weeks; withheld over summer dormancy | Mildly toxic to pets |
| Conophytum Uviforme | Bright indirect light (just back from a sunny window) | Only during the cool autumn-to-spring growing season, roughly every 10-14 days when soil is dry; kept dry in summer | Mildly toxic to pets |
| Conophytum wettsteinii | Bright indirect light (just back from a sunny window) | Lightly in autumn and winter during growth; keep dry through summer dormancy | Mildly toxic to pets |
| Constricted Masdevallia | Medium indirect light (a couple of metres from a window) | Daily in summer heat; every 2–3 days in cooler months | Pet-safe |
| Contrayerba | Bright indirect light (just back from a sunny window) | Every 7–10 days in growing season; every 14–21 days in winter | Mildly toxic to pets |
| Cook Pine | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Coontie | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Cooper's Haworthia | Bright indirect light (just back from a sunny window) | Every 1-3 weeks in spring/summer; about once a month in winter | Pet-safe |
| Cooper's Haworthia (Pilifera) | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in summer, far less in winter | Pet-safe |
| Copper Angel Masdevallia | Medium indirect light (a couple of metres from a window) | 2–3 times per week; keep substrate slightly moist | Pet-safe |
| Copper Leaf Plant | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; reduce significantly in dormancy | Pet-safe |
| Coral Bark Japanese Maple 'Sango-kaku' | Bright indirect light (just back from a sunny window) | Once or twice weekly through the growing season | Pet-safe |
| Coral Bark Maple | Bright indirect light (just back from a sunny window) | When the top 3–5 cm of soil is dry, roughly every 5–7 days in summer; reduce in winter | Pet-safe |
| Coral bells | Medium indirect light (a couple of metres from a window) | Weekly during active growth; reduce in autumn and winter | Pet-safe |
| Coral Bells 'Caramel' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, around weekly in growth; more in heat and for containers | Pet-safe |
| Coral Bells 'Caramel' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil feels dry, roughly every 5-7 days during active growth | Pet-safe |
| Coral Bells 'Electra' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days during the growing season | Pet-safe |
| Coral Bells 'Lime Rickey' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil feels dry, roughly every 5-7 days during active growth | Pet-safe |
| Coral Bells 'Obsidian' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly weekly in growth; more in heat and for container plants | Pet-safe |
| Coral Bells 'Obsidian' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, approximately every 5-7 days during the growing season | Pet-safe |
| Coral Bells 'Palace Purple' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly weekly in growth; more in heat and for container plants | Pet-safe |
| Coral Bells 'Palace Purple' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days during the growing season | Pet-safe |
| Coral Berry Bromeliad | Bright indirect light (just back from a sunny window) | Keep central cup filled; water soil every 2–3 weeks | Pet-safe |
| Coral Berry Bromeliad | Bright indirect light (just back from a sunny window) | Keep the central cup filled; water compost every 10-14 days | Pet-safe |
| Coral Cactus | Bright indirect light (just back from a sunny window) | Every 2-4 weeks; let the soil dry out almost fully between waterings | Toxic to pets |
| Coral Cattleya | Bright indirect light (just back from a sunny window) | When the mix dries, roughly every 5-7 days in growth | Pet-safe |
| Cordyline | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Cork Palm | Bright indirect light (just back from a sunny window) | Every 2–3 weeks; very sparingly in winter | Toxic to pets |
| Corkscrew Plant | Bright indirect light (just back from a sunny window) | Keep permanently wet — stand the pot in 2-4 cm of water at all times | Mildly toxic to pets |
| Corkscrew Rush | Bright indirect light (just back from a sunny window) | Keep soil permanently wet; top up the water saucer every 3–5 days | Pet-safe |
| Corky-Stemmed Passion Flower | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in summer | Mildly toxic to pets |
| Corn plant | Medium indirect light (a couple of metres from a window) | When the top half of the soil is dry, every 10-14 days | Toxic to pets |
| Corn Plant | Bright indirect light (just back from a sunny window) | When the top 2.5cm (1in) of compost is dry, roughly every 7-10 days in summer | Toxic to pets |
| Corn-Leaf Pitcairnia | Medium indirect light (a couple of metres from a window) | every 5–7 days in summer, every 10–14 days in winter | Pet-safe |
| Corrugated Sage | Bright indirect light (just back from a sunny window) | Weekly | Mildly toxic to pets |
| Corsage Orchid | Bright indirect light (just back from a sunny window) | When the mix has dried, roughly every 5-7 days in growth | Pet-safe |
| Coryphantha Elephantidens | Bright indirect light (just back from a sunny window) | When the mix is fully dry, about every 1-2 weeks in summer; keep dry in winter | Mildly toxic to pets |
| Costa Rica Bamboo Palm | Bright indirect light (just back from a sunny window) | Every 7–10 days in summer, every 14 days in winter | Pet-safe |
| Costa Rica Bamboo Palm | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in active growth | Pet-safe |
| Costa Rican Goldfish Vine | Bright indirect light (just back from a sunny window) | Water when the top 2 cm of mix has dried; every 5–8 days in summer, every 10–14 days in winter | Pet-safe |
| Costa Rican Stanhopea | Bright indirect light (just back from a sunny window) | Every 3–5 days in growth; reduce to weekly in winter | Pet-safe |
| Costus Woodsonii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 3-6 days in warm growth | Mildly toxic to pets |
| Cotton Candy Fern | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, often every 4-7 days | Pet-safe |
| Cotyledon Eliseae | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days in growth | Toxic to pets |
| Cotyledon Papillaris | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in growth | Toxic to pets |
| Cotyledon Tomentosa 'Bear Paw' | Bright indirect light (just back from a sunny window) | When the top soil is fully dry, roughly every 7-14 days in growth | Toxic to pets |
| Cow Parsley | Medium indirect light (a couple of metres from a window) | Moderate; water during dry spells in the first season | Mildly toxic to pets |
| Cowslip | Medium indirect light (a couple of metres from a window) | Twice weekly in active growth, reduce to once weekly when dormant in summer | Toxic to pets |
| Cowslip Orchid | Bright indirect light (just back from a sunny window) | Lightly during autumn to spring growth; completely dry during summer dormancy | Pet-safe |
| Crape Jasmine | Bright indirect light (just back from a sunny window) | Every 5–7 days during growing season; reduce in winter | Toxic to pets |
| Crassula Columnella | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 12-16 days in growth | Toxic to pets |
| Crassula Hemisphaerica | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is fully dry, roughly every 10-14 days in growth; less in summer rest | Toxic to pets |
| Crassula Marnieriana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in summer and every 3-4 weeks in winter | Toxic to pets |
| Crassula Nudicaulis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in growth | Toxic to pets |
| Crassula Pellucida | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 1-2 weeks in growth and far less in winter | Toxic to pets |
| Crassula Pyramidalis | Bright indirect light (just back from a sunny window) | Sparingly, only when soil is bone dry, roughly every 2-3 weeks in growth; nearly dry over summer rest | Toxic to pets |
| Crassula Setulosa | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in growth | Toxic to pets |
| Crassula Socialis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in summer and every 3-4 weeks in winter | Toxic to pets |
| Crazy-leaf Begonia | Bright indirect light (just back from a sunny window) | Every 5–7 days in the growing season; every 10–14 days in winter | Toxic to pets |
| Creeping Begonia | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of compost feels dry, every 5-8 days in active growth | Toxic to pets |
| Creeping broad-leaf sedge | Medium indirect light (a couple of metres from a window) | Keep evenly and consistently moist; never allow to dry out | Pet-safe |
| Creeping Coin Peperomia | Medium indirect light (a couple of metres from a window) | Every 7–10 days in the growing season; every 14–21 days in winter | Pet-safe |
| Creeping fig | Bright indirect light (just back from a sunny window) | When the top 1cm (half-inch) of compost dries | Toxic to pets |
| Creeping Gaultheria | Medium indirect light (a couple of metres from a window) | Regularly; soil must not dry out | Toxic to pets |
| Creeping Mazus | Bright indirect light (just back from a sunny window) | Every 3–5 days; prefers consistently moist soil | Mildly toxic to pets |
| Creeping Phlox 'Blue Ridge' | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Creeping Sage | Bright indirect light (just back from a sunny window) | Weekly during the growing season | Pet-safe |
| Creeping snowberry | Medium indirect light (a couple of metres from a window) | Regular; keep moist | Mildly toxic to pets |
| Creeping Speedwell | Bright indirect light (just back from a sunny window) | Moderate; water when the top 2–3 cm of soil begins to dry | Pet-safe |
| Creeping Woodland Phlox | Medium indirect light (a couple of metres from a window) | Weekly; maintain consistent moisture | Mildly toxic to pets |
| Crenate Orchid Cactus | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-14 days in the growing season; reduce to once every 3-4 weeks in winter | Pet-safe |
| Crepe Ginger | Bright indirect light (just back from a sunny window) | Frequent in growing season, minimal in dormancy | Mildly toxic to pets |
| Crescent-Leaved Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 3–4 days during active growth; reduce to every 5–6 days in winter | Pet-safe |
| Crested Alloplectus | Bright indirect light (just back from a sunny window) | Every 5–7 days; allow top 2 cm of medium to dry between waterings | Pet-safe |
| Crested Bracken | Medium indirect light (a couple of metres from a window) | every 1-2 weeks once established | Toxic to pets |
| Crested Buckler Fern | Medium indirect light (a couple of metres from a window) | Keep consistently moist; suitable for permanently damp or boggy sites | Mildly toxic to pets |
| Crested Euphorbia | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in summer | Toxic to pets |
| Crested Hart's Tongue Fern | Medium indirect light (a couple of metres from a window) | Weekly in the growing season, every 2–3 weeks in winter | Pet-safe |
| Crested Iris | Medium indirect light (a couple of metres from a window) | Moderate — keep evenly moist | Toxic to pets |
| Crested Silver Lady Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days in spring and summer | Pet-safe |
| Crested Vanda | Bright indirect light (just back from a sunny window) | Daily to every other day in summer; every 3-5 days in winter | Pet-safe |
| Crested Wood Fern | Medium indirect light (a couple of metres from a window) | Keep soil constantly moist; check every 3-5 days | Mildly toxic to pets |
| Cretan Brake Fern | Medium indirect light (a couple of metres from a window) | Every 3–5 days in summer; every 7 days in winter | Pet-safe |
| Cretan Brake Fern | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top third of the soil feels dry, roughly every 4-7 days in growth | Pet-safe |
| Cretan Climbing Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-7 days | Mildly toxic to pets |
| Crimean Linden | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 2–3 weeks in dry summers once mature | Pet-safe |
| Crimson and Gold quince | Bright indirect light (just back from a sunny window) | Weekly when newly planted; established plants largely rain-fed in temperate climates | Mildly toxic to pets |
| Crimson Cestrum | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; reduce to every 10–14 days in winter | Toxic to pets |
| Crimson Ginger Flower | Bright indirect light (just back from a sunny window) | 2–3 times per week | Mildly toxic to pets |
| Crimson Portea | Bright indirect light (just back from a sunny window) | Weekly in growth; every 10–14 days in winter | Pet-safe |
| Crisped Water Trumpet | Medium indirect light (a couple of metres from a window) | Permanently submerged; substrate should never dry out | Toxic to pets |
| Crispum Hart's Tongue Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days; keep evenly moist | Pet-safe |
| Crispy Wave 'Hurricane' | Medium indirect light (a couple of metres from a window) | Water when the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Crispy Wave Fern | Medium indirect light (a couple of metres from a window) | Every 7–10 days; allow top 2–3 cm of soil to dry first | Pet-safe |
| Crispy Wave Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Crocodile fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, every 4-7 days | Pet-safe |
| Cross Gentian | Bright indirect light (just back from a sunny window) | Water regularly until established; drought-tolerant thereafter | Mildly toxic to pets |
| Crossandra (firecracker flower) | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil starts to dry, often every 4-7 days in growth | Pet-safe |
| Crossandra infundibuliformis 'Mango' | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 3-5 days in warmth | Mildly toxic to pets |
| Crossvine | Bright indirect light (just back from a sunny window) | Weekly when young; established plants are drought-tolerant | Mildly toxic to pets |
| Crosswort | Medium indirect light (a couple of metres from a window) | Low to moderate — rainfall sufficient in UK | Mildly toxic to pets |
| Croton | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, every 5-7 days | Toxic to pets |
| Croton Gold Dust | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Crown Bamboo | Bright indirect light (just back from a sunny window) | 2-3 times per week during growing season; weekly in cooler months | Pet-safe |
| Crown Begonia | Bright indirect light (just back from a sunny window) | When the top 2–3 cm of compost feels dry | Toxic to pets |
| Crown Fern | Medium indirect light (a couple of metres from a window) | 2-3 times per week in growing season; reduce in winter | Pet-safe |
| Crown Staghorn Fern | Bright indirect light (just back from a sunny window) | Twice weekly in the growing season; once every 10–14 days in cooler months | Pet-safe |
| Crown Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–10 days in the growing season; every 2–3 weeks in winter | Pet-safe |
| Cryptanthus 'Black Mystic' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Pet-safe |
| Cryptanthus 'Pink Starlight' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Pet-safe |
| Cryptanthus 'Ruby' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Pet-safe |
| Cryptanthus acaulis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Pet-safe |
| Cryptanthus bromelioides | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly weekly | Pet-safe |
| Cryptanthus fosterianus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Pet-safe |
| Cryptanthus zonatus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Pet-safe |
| Cryptocoryne balansae | Medium indirect light (a couple of metres from a window) | Continuously submerged; 25-50% water change weekly | Mildly toxic to pets |
| Cryptocoryne crispatula var. balansae | Medium indirect light (a couple of metres from a window) | Permanently submerged; 25-30% weekly water change | Mildly toxic to pets |
| Cryptocoryne lucens | Medium indirect light (a couple of metres from a window) | Continuously submerged; 25-50% water change weekly | Mildly toxic to pets |
| Cryptocoryne parva | Medium indirect light (a couple of metres from a window) | Continuously submerged; 25-50% water change weekly | Mildly toxic to pets |
| Cryptocoryne spiralis | Medium indirect light (a couple of metres from a window) | Continuously submerged; 25-50% water change weekly | Mildly toxic to pets |
| Cryptocoryne wendtii 'Red' | Medium indirect light (a couple of metres from a window) | Continuously submerged; 25-50% water change weekly | Mildly toxic to pets |
| Crystal Anthurium | Bright indirect light (just back from a sunny window) | When the top 2-3cm of compost dries, roughly weekly in summer | Toxic to pets |
| Crystal Butterwort | Bright indirect light (just back from a sunny window) | Water lightly every 5–10 days during the carnivorous growing phase; allow to nearly dry between waterings in summer succulent-leaf phase | Pet-safe |
| Crystal Palace lobelia | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, typically every 2-3 days in summer | Toxic to pets |
| Crystal Palace Lobelia | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil feels dry, roughly every 3-5 days | Toxic to pets |
| Ctenanthe 'Amagris' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days in growth | Pet-safe |
| Ctenanthe Compressa | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Ctenanthe Oppenheimiana 'Tricolor' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Ctenanthe Pilosa 'Golden Mosaic' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Ctenanthe Setosa 'Grey Star' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Cuban Cigar Calathea | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; typically water when the top 2-3 cm feels dry | Pet-safe |
| Cuban Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer, every 3–4 weeks in winter | Pet-safe |
| Cuckooflower | Medium indirect light (a couple of metres from a window) | Moderate to high — keep moist at all times | Mildly toxic to pets |
| Cucumber Tree Magnolia | Bright indirect light (just back from a sunny window) | Every 2–3 weeks when established; more frequently during active growth in summer | Pet-safe |
| Cuming's Medinilla | Bright indirect light (just back from a sunny window) | Every 7–10 days in spring and summer; every 14–21 days in autumn and winter | Mildly toxic to pets |
| Cup Ginger | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Mildly toxic to pets |
| Cup-Shaped Wittrockia | Bright indirect light (just back from a sunny window) | Keep the central tank filled; water the root medium when the top 2-3 cm is dry, roughly every 7-10 days | Pet-safe |
| Cupid Peperomia | Bright indirect light (just back from a sunny window) | Roughly every 7-10 days in spring and summer, less in winter — always led by the soil, not the calendar. | Pet-safe |
| Cupuaçu | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil starts to dry, typically every 3-6 days in growth | Mildly toxic to pets |
| Curcuma Alismatifolia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry during active growth, then withhold once foliage yellows for dormancy | Mildly toxic to pets |
| Curio Articulatus | Bright indirect light (just back from a sunny window) | When the mix is dry through, roughly every 10-14 days in active growth and every 3-4 weeks while resting | Toxic to pets |
| Curio Citriformis | Bright indirect light (just back from a sunny window) | When the top of the soil is dry, about every 10-14 days in summer; every 3-4 weeks in winter | Toxic to pets |
| Curio peregrinus | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-21 days; far less in winter | Toxic to pets |
| Curio Radicans | Bright indirect light (just back from a sunny window) | When the top few centimetres are dry, about every 10-14 days in summer; every 3-4 weeks in winter | Toxic to pets |
| Curio Rowleyanus | Bright indirect light (just back from a sunny window) | When the top of the soil is dry, roughly every 10-14 days in summer; every 3-4 weeks in winter | Toxic to pets |
| Curio Talinoides var. mandraliscae | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days in growth | Toxic to pets |
| Curled-Spathe Heliconia | Bright indirect light (just back from a sunny window) | 2–3 times per week in warm months; once per week in cooler conditions | Mildly toxic to pets |
| Curly Begonia | Medium indirect light (a couple of metres from a window) | When the top of the sphagnum moss begins to lose moisture | Toxic to pets |
| Curly Kentia Palm | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Curly Oncidium | Bright indirect light (just back from a sunny window) | Every 5–7 days during growth; every 10–14 days during winter rest | Pet-safe |
| Curly Pondweed | Bright indirect light (just back from a sunny window) | Fully submerged; grows in 30 cm to 2 m of water | Pet-safe |
| Curly Racinaea | Bright indirect light (just back from a sunny window) | Mist thoroughly 3-4 times per week or submerge in water for 20 minutes twice weekly | Pet-safe |
| Curly Sentry Palm | Bright indirect light (just back from a sunny window) | Every 7–10 days in summer; every 14–21 days in winter | Pet-safe |
| Curly Waterweed | Bright indirect light (just back from a sunny window) | Fully submerged; ponds — no regular water changes needed; aquariums — 20-25% weekly | Mildly toxic to pets |
| Curly-Wurly Rush | Bright indirect light (just back from a sunny window) | Constant — keep roots standing in shallow water or in permanently wet soil | Pet-safe |
| Curved Peperomia | Bright indirect light (just back from a sunny window) | Every 2–3 weeks (allow compost to dry between waterings) | Pet-safe |
| Curved-Flower Sage | Bright indirect light (just back from a sunny window) | Regular, allowing surface to partially dry between waterings | Mildly toxic to pets |
| Curved-Leaf Vriesea | Medium indirect light (a couple of metres from a window) | Keep the central tank one-quarter to one-half full; flush every 7-10 days; water soil only when top 3 cm is dry | Pet-safe |
| Cushion Aloe Haworthia | Bright indirect light (just back from a sunny window) | When soil is fully dry, about every 7-12 days in summer, much less in winter | Pet-safe |
| Cushion Moss Selaginella | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist, watering every 4-6 days before the surface dries | Pet-safe |
| Cusick's Camas | Bright indirect light (just back from a sunny window) | Regular during autumn through spring growth; reduces naturally as foliage senesces in early summer | Mildly toxic to pets |
| Cusick's Camas | Bright indirect light (just back from a sunny window) | Regular moisture during spring growth; tolerates drier conditions after foliage dies back in summer | Mildly toxic to pets |
| Cuthbertson's Dendrobium | Bright indirect light (just back from a sunny window) | When the medium surface begins to dry, roughly every 1-3 days | Pet-safe |
| Cutite | Bright indirect light (just back from a sunny window) | Every 4–7 days; maintain consistent moisture without waterlogging | Mildly toxic to pets |
| Cutleaf Toothwort | Medium indirect light (a couple of metres from a window) | Moderate during the active growth period (March–May); none needed once dormant in summer. | Pet-safe |
| Cycas Rumphii | Bright indirect light (just back from a sunny window) | Water when the top 3-5 cm of soil is dry, roughly every 1-2 weeks | Toxic to pets |
| Cyclamen | Bright indirect light (just back from a sunny window) | When the soil surface feels dry, roughly every 5-10 days in bloom | Toxic to pets |
| Cyclamen 'Victoria' | Bright indirect light (just back from a sunny window) | When the top of the compost feels dry, roughly every 5-7 days while in growth | Toxic to pets |
| Cyclamen-flowered Daffodil | Bright indirect light (just back from a sunny window) | Regular during autumn to late spring; dry summer dormancy | Toxic to pets |
| Cyclops Staghorn Fern | Bright indirect light (just back from a sunny window) | Soak or thoroughly water the mount about once a week, more in heat, letting it approach dryness between soakings | Pet-safe |
| Cylindric Arum | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry during the growing season; cease watering during summer dormancy | Toxic to pets |
| Cylindrical Snake Plant | Bright indirect light (just back from a sunny window) | Every 2-3 weeks in spring and summer; roughly monthly in winter | Toxic to pets |
| Cymbidium 'Red Beauty' | Bright indirect light (just back from a sunny window) | Every 4-7 days in growth; every 10-14 days in winter | Pet-safe |
| Cymbidium 'Sarah Jean' | Bright indirect light (just back from a sunny window) | Keep evenly moist in growth, about every 5-7 days, drier in winter | Pet-safe |
| Cymbidium 'Showgirl' | Bright indirect light (just back from a sunny window) | Every 4-7 days in growth; every 10-14 days in winter | Pet-safe |
| Cymbidium devonianum | Bright indirect light (just back from a sunny window) | Every 5-7 days in growth; reduce to every 10-14 days in winter | Pet-safe |
| Cymbidium erythrostylum | Bright indirect light (just back from a sunny window) | Every 5-7 days in growth; every 10-14 days in winter | Pet-safe |
| Cymbidium Golden Elf 'Sundust' | Bright indirect light (just back from a sunny window) | Every 4-7 days in growth; every 10-14 days in cooler months | Pet-safe |
| Cymbidium tracyanum | Bright indirect light (just back from a sunny window) | Every 3-6 days in growth; keep evenly moist in summer | Pet-safe |
| Cyperus alternifolius | Bright indirect light (just back from a sunny window) | Keep constantly wet; stand the pot in a saucer of water that never dries out | Mildly toxic to pets |
| Cyperus involucratus | Bright indirect light (just back from a sunny window) | Keep constantly wet; stand in water and never let the soil dry | Mildly toxic to pets |
| Cyperus Sedge | Bright indirect light (just back from a sunny window) | Permanently wet; shallow water up to 15 cm deep | Pet-safe |
| Cyperus-Like Sedge | Medium indirect light (a couple of metres from a window) | Permanent moisture; plant in standing water up to 15 cm deep | Pet-safe |
| Cyrtomium macrophyllum | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Cystopteris bulbifera | Medium indirect light (a couple of metres from a window) | Keep consistently moist; water when the surface begins to dry, roughly every 3-6 days in growth | Mildly toxic to pets |
| Cystopteris fragilis | Medium indirect light (a couple of metres from a window) | Keep evenly moist while in growth, watering when the top 1-2 cm of soil dries, roughly every 4-7 days | Mildly toxic to pets |
| Daffodil | Bright indirect light (just back from a sunny window) | Moderate during active growth (autumn–spring); dry during summer dormancy | Toxic to pets |
| Dagger-Leaf Rush | Bright indirect light (just back from a sunny window) | Frequent to constant — soil must remain moist to wet at all times | Pet-safe |
| Dalstroem's Dragon Orchid | Medium indirect light (a couple of metres from a window) | Daily misting or watering; roots must remain continuously moist but never waterlogged | Pet-safe |
| Dancing Girl Ginger | Bright indirect light (just back from a sunny window) | 1–2 times per week in the growing season; stop almost entirely in winter | Mildly toxic to pets |
| Dancing Ladies Ginger | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil feels dry, roughly every 5-7 days in the growing season; reduce to nearly dry in winter dormancy | Mildly toxic to pets |
| Dancing Lady Orchid | Bright indirect light (just back from a sunny window) | When the mix begins to dry, roughly every 4-6 days in growth | Pet-safe |
| Danica Globe Arborvitae | Bright indirect light (just back from a sunny window) | Moderate — keep soil evenly moist, especially in heat | Pet-safe |
| Daphne mezereum | Bright indirect light (just back from a sunny window) | Water when the top few centimetres of soil are dry; keep evenly moist, never waterlogged | Toxic to pets |
| Daphne odora | Bright indirect light (just back from a sunny window) | Water when the top few centimetres of soil are dry; keep evenly moist, never soggy | Toxic to pets |
| Daphne odora 'Aureomarginata' | Bright indirect light (just back from a sunny window) | Water when the top few centimetres of soil are dry; keep evenly moist but never wet | Toxic to pets |
| Daphne x burkwoodii 'Carol Mackie' | Bright indirect light (just back from a sunny window) | Water when the top few centimetres of soil are dry; keep evenly moist, never waterlogged | Toxic to pets |
| Dark Catasetum | Bright indirect light (just back from a sunny window) | Regularly during growth; reduced but not stopped in winter | Pet-safe |
| dark form scindapsus | Medium indirect light (a couple of metres from a window) | Every 7–10 days in growing season; every 10–14 days in winter | Toxic to pets |
| Dark Green Ceratozamia | Medium indirect light (a couple of metres from a window) | Weekly in summer; every 2–3 weeks in winter | Toxic to pets |
| Dark Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep substrate evenly moist at all times | Mildly toxic to pets |
| Dark Velvet Kohleria | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; every 10–14 days in winter | Pet-safe |
| Dark-purple Primulina | Medium indirect light (a couple of metres from a window) | When the top third of compost feels dry | Mildly toxic to pets |
| Darwin's Orchid | Bright indirect light (just back from a sunny window) | When the roots show light silver colour and the medium is dry, roughly every 7-10 days in summer | Pet-safe |
| Darwin's Slipper | Bright indirect light (just back from a sunny window) | Moderately — water when the top of the compost is barely dry | Mildly toxic to pets |
| Darwin's Slipper Plant | Bright indirect light (just back from a sunny window) | When the top of the growing medium dries slightly | Mildly toxic to pets |
| David viburnum | Bright indirect light (just back from a sunny window) | Once or twice weekly when establishing; monthly once mature | Mildly toxic to pets |
| Davidia involucrata | Bright indirect light (just back from a sunny window) | Weekly in dry spells, especially the first few years | Mildly toxic to pets |
| Davis's Masdevallia | Medium indirect light (a couple of metres from a window) | When the medium surface barely begins to dry, roughly every 3-5 days | Pet-safe |
| Dawn viburnum | Bright indirect light (just back from a sunny window) | Weekly in the first two seasons; every 2–3 weeks once established | Mildly toxic to pets |
| Day-blooming Jasmine | Bright indirect light (just back from a sunny window) | Every 5–7 days; reduce in cooler or wet seasons | Toxic to pets |
| Debao Cycad | Bright indirect light (just back from a sunny window) | Every 7–14 days; reduce in winter | Toxic to pets |
| Deciduous Azalea 'Gibraltar' | Bright indirect light (just back from a sunny window) | Keep evenly moist; water deeply 1-2 times weekly through summer, more in heat | Toxic to pets |
| Delicate Air Plant | Bright indirect light (just back from a sunny window) | Soak for 20–30 minutes once a week | Pet-safe |
| Delicious Begonia | Bright indirect light (just back from a sunny window) | When the top 2–3 cm of compost feels dry | Toxic to pets |
| Delta Dracula | Medium indirect light (a couple of metres from a window) | Every 2-3 days, never allowing roots to dry out completely | Pet-safe |
| Delta Pure White pansy | Bright indirect light (just back from a sunny window) | Every 2–3 days in warm weather; weekly in cool, wet conditions | Pet-safe |
| Dendrobium 'Berry Oda' | Bright indirect light (just back from a sunny window) | When the bark is nearly dry, roughly every 5-7 days in growth | Pet-safe |
| Dendrobium 'Emma White' | Bright indirect light (just back from a sunny window) | When the bark mix nears dry, roughly every 5-7 days in growth | Pet-safe |
| Dendrobium loddigesii | Bright indirect light (just back from a sunny window) | Frequently in growth, roughly every 4-6 days; sparingly through the winter rest | Pet-safe |
| Dendrobium orchid | Bright indirect light (just back from a sunny window) | When the bark approaches dryness, every 5-10 days in summer | Pet-safe |
| Dendrobium phalaenopsis | Bright indirect light (just back from a sunny window) | When the mix is approaching dry, roughly every 5-7 days in growth | Pet-safe |
| Dendrochilum cobbianum | Bright indirect light (just back from a sunny window) | 2-3 times per week, allowing only slight drying between waterings | Pet-safe |
| Dendrochilum filiforme | Bright indirect light (just back from a sunny window) | 2-3 times per week, letting the medium dry only slightly between waterings | Pet-safe |
| Dendrochilum glumaceum | Bright indirect light (just back from a sunny window) | 2-3 times per week, letting the medium dry only slightly between waterings | Pet-safe |
| Denison's Vanda | Bright indirect light (just back from a sunny window) | Abundant watering in active growth (spring–summer); reduce to light morning fogging every few days in winter | Pet-safe |
| Dense Ginger Lily | Bright indirect light (just back from a sunny window) | Regularly through spring and summer; minimal in winter dormancy | Mildly toxic to pets |
| Dense Ginger Lily | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in summer | Mildly toxic to pets |
| Dense-Leaf Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–14 days in summer, much less in winter | Pet-safe |
| Densiformis Yew | Medium indirect light (a couple of metres from a window) | When the top 5 cm of soil is dry, roughly weekly while establishing | Toxic to pets |
| Derby Sundew | Bright indirect light (just back from a sunny window) | Standing tray method (growing season); reduced to near-dry (rest) | Pet-safe |
| Desdemona Ligularia | Medium indirect light (a couple of metres from a window) | Constantly moist to wet; never let it dry out — water generously in dry spells, sometimes daily in heat | Mildly toxic to pets |
| Desert Privet Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Deshojo Japanese Maple | Bright indirect light (just back from a sunny window) | Keep consistently moist; frequently daily in summer | Mildly toxic to pets |
| Deutschland Astilbe | Bright indirect light (just back from a sunny window) | Keep soil consistently moist to wet; water when the top 2-3 cm dries, about every 3-5 days in summer | Mildly toxic to pets |
| Deutzia 'Elegantissima' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days during the growing season | Pet-safe |
| Devil's-bit Scabious | Bright indirect light (just back from a sunny window) | Regular; keep soil consistently moist throughout spring and summer | Mildly toxic to pets |
| DeVoss Codonanthe | Bright indirect light (just back from a sunny window) | Every 5–7 days; allow top 1–2 cm of medium to dry between waterings | Pet-safe |
| Deyke's Wax Plant | Medium indirect light (a couple of metres from a window) | Every 10–14 days in summer, every 3–4 weeks in winter | Pet-safe |
| Diamond Maidenhair Fern | Bright indirect light (just back from a sunny window) | Every 3–4 days in the growing season; every 5–7 days in winter | Pet-safe |
| Dicentra formosa 'Luxuriant' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil begins to dry, roughly every 5-7 days | Toxic to pets |
| Didier's Angraecum | Bright indirect light (just back from a sunny window) | 3–5 times per week in summer; reduce markedly in December–January after flowering | Pet-safe |
| Didissandra uniflora | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of mix begins to dry, roughly every 4-7 days | Mildly toxic to pets |
| Dieffenbachia | Medium indirect light (a couple of metres from a window) | When the top 3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Dieffenbachia 'Camille' | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, about every 7-10 days in summer | Toxic to pets |
| Dieffenbachia 'Compacta' | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, roughly every 7-10 days in summer | Toxic to pets |
| Dieffenbachia 'Tropic Snow' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in summer | Toxic to pets |
| Dieffenbachia Amy | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Dieffenbachia Maculata Exotica | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Dieffenbachia Memoria Corsii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Dieffenbachia Reflector | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Dieffenbachia Sparkles | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Dieffenbachia Sterling | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Dieffenbachia Tropic Marianne | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Digitalis 'Camelot Cream' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly weekly in dry spells | Toxic to pets |
| Dilys Cranesbill | Medium indirect light (a couple of metres from a window) | Water once a week during dry spells; largely self-sufficient once established in UK conditions | Pet-safe |
| Dimpled Trout Lily | Medium indirect light (a couple of metres from a window) | Consistently moist from emergence to dormancy (late winter to late spring) | Mildly toxic to pets |
| Dioscorides' Arum | Bright indirect light (just back from a sunny window) | Moderate during active growth (autumn–spring); dry off completely in summer | Toxic to pets |
| Disa tripetaloides | Bright indirect light (just back from a sunny window) | Keep permanently moist; water daily or stand in a tray of pure water | Pet-safe |
| Disa uniflora | Bright indirect light (just back from a sunny window) | Keep continuously moist; water daily or stand in a shallow tray of pure water | Pet-safe |
| Dischidia imbricata | Bright indirect light (just back from a sunny window) | When the medium approaches dry, roughly every 5-7 days | Mildly toxic to pets |
| Dischidia major | Bright indirect light (just back from a sunny window) | When the medium nears dry, roughly every 5-7 days | Mildly toxic to pets |
| Dischidia platyphylla | Bright indirect light (just back from a sunny window) | When the medium is mostly dry, roughly every 5-7 days | Mildly toxic to pets |
| Dischidia Ruscifolia | Bright indirect light (just back from a sunny window) | When the medium is nearly dry, roughly every 7-10 days | Mildly toxic to pets |
| Dischidia ruscifolia 'Variegata' | Bright indirect light (just back from a sunny window) | When the top of the medium is just dry, roughly every 5-7 days | Mildly toxic to pets |
| Dischor Wax Plant | Bright indirect light (just back from a sunny window) | When the top half of the mix is dry, roughly every 7–12 days in summer | Pet-safe |
| Disk Staghorn Fern | Bright indirect light (just back from a sunny window) | Soak when the root mass is dry, roughly every 10-14 days | Pet-safe |
| Disocactus phyllanthoides | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Mildly toxic to pets |
| Diversifolia Wax Plant | Bright indirect light (just back from a sunny window) | Roughly every 1-2 weeks in spring and summer; less in autumn and winter | Pet-safe |
| Divine Orange New Guinea Impatiens | Bright indirect light (just back from a sunny window) | Water when the top 2-3 cm of compost is dry, roughly every 2-3 days in warm weather; containers in full sun may need daily watering in peak summer | Mildly toxic to pets |
| Divisilobum Soft Shield Fern | Medium indirect light (a couple of metres from a window) | Every 5–7 days; reduce in winter | Pet-safe |
| Dodson's Lepanthes | Medium indirect light (a couple of metres from a window) | Daily misting or every 1-2 days; never allow to dry out | Pet-safe |
| Dog's Tooth Violet | Medium indirect light (a couple of metres from a window) | Moderate during active growth; minimal when dormant | Mildly toxic to pets |
| Dogwood | Medium indirect light (a couple of metres from a window) | Low to moderate — water during establishment; drought-tolerant thereafter | Mildly toxic to pets |
| Dogwood 'Eddie's White Wonder' | Bright indirect light (just back from a sunny window) | Keep evenly moist; water deeply in dry spells | Mildly toxic to pets |
| Dolce Blackcurrant Heuchera | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly weekly | Pet-safe |
| Dollbaby miniature gloxinia | Bright indirect light (just back from a sunny window) | Every 5–8 days; keep evenly moist but never waterlogged | Pet-safe |
| Donnell Smith's Guzmania | Medium indirect light (a couple of metres from a window) | Keep the central tank filled; flush and refill every 7-10 days; water soil only when the top 3 cm is dry | Pet-safe |
| Dotted Neoregelia | Medium indirect light (a couple of metres from a window) | Maintain water in the central cup; water the potting medium lightly and allow it to dry slightly | Pet-safe |
| Dotted Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Double Bloodroot | Medium indirect light (a couple of metres from a window) | Every 5–7 days during spring growth; withhold or greatly reduce during summer dormancy | Toxic to pets |
| Double King Cup | Bright indirect light (just back from a sunny window) | Permanently moist to standing water 0–5 cm deep | Mildly toxic to pets |
| Double Marsh Marigold | Bright indirect light (just back from a sunny window) | Permanently moist to standing water 0–5 cm deep | Mildly toxic to pets |
| Double Pinwheel Flower | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; reduce in winter | Toxic to pets |
| Double-Flowered Bloodroot | Medium indirect light (a couple of metres from a window) | Moderate in spring; reduce as plant approaches dormancy in summer | Toxic to pets |
| doublefile viburnum | Bright indirect light (just back from a sunny window) | Weekly when young; every 10–14 days once established | Mildly toxic to pets |
| Douglas's Sinningia | Bright indirect light (just back from a sunny window) | Allow top 2 cm to dry between waterings | Pet-safe |
| Dove Masdevallia | Medium indirect light (a couple of metres from a window) | Daily or every 2 days; the root zone must remain continuously moist | Pet-safe |
| Downy Wax Plant | Bright indirect light (just back from a sunny window) | Every 10-14 days in active growth; every 14-21 days in autumn and winter | Pet-safe |
| Downy Yellow Violet | Medium indirect light (a couple of metres from a window) | Regular; keep evenly moist | Pet-safe |
| Dracaena | Medium indirect light (a couple of metres from a window) | When the top half of the soil is dry, every 10-14 days | Toxic to pets |
| Dracaena 'Janet Craig' | Bright indirect light (just back from a sunny window) | Every 10-14 days; when the top third of the soil is dry | Toxic to pets |
| Dracaena 'Lemon Lime' | Bright indirect light (just back from a sunny window) | Every 1-2 weeks; let the top 2-5 cm (1-2 in) of soil dry out first | Toxic to pets |
| Dracaena 'Song of India' | Bright indirect light (just back from a sunny window) | Roughly every 7–10 days in growth; let the top 2.5–5 cm of mix dry first. Water less in winter or low light. | Toxic to pets |
| Dracaena Aletriformis | Bright indirect light (just back from a sunny window) | When top 3-4 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Dracaena Arborea | Bright indirect light (just back from a sunny window) | When top 4-5 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Dracaena Aubryana | Bright indirect light (just back from a sunny window) | When top 3-4 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Dracaena Bicolor | Bright indirect light (just back from a sunny window) | When top 3-4 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Dracaena Braunii | Medium indirect light (a couple of metres from a window) | Soil: when top 2-3 cm is dry, every 7-10 days. Water culture: top up weekly, full change every 2-3 weeks | Toxic to pets |
| Dracaena Compacta | Medium indirect light (a couple of metres from a window) | When top 3-5 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Dracaena Deremensis Dorado | Bright indirect light (just back from a sunny window) | When top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Dracaena Deremensis Green Stripe | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, every 7-10 days | Toxic to pets |
| Dracaena Deremensis Warneckii | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Dracaena Ellenbeckiana | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, every 10-14 days | Toxic to pets |
| Dracaena Fragrans Lindenii | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, every 7-10 days | Toxic to pets |
| Dracaena Fragrans Massangeana | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Dracaena Fragrans Sol | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-14 days | Toxic to pets |
| Dracaena Fragrans Victoria | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, every 7-10 days | Toxic to pets |
| Dracaena Goldieana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Dracaena Hookeriana | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, every 10-14 days | Toxic to pets |
| Dracaena Laxissima | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Dracaena Marginata Bicolor | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Dracaena Marginata Tricolor | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, about every 1-2 weeks | Toxic to pets |
| Dracaena Reflexa | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, about every 1-2 weeks | Toxic to pets |
| Dracaena Reflexa Song of Jamaica | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, about every 1-2 weeks | Toxic to pets |
| Dracaena Sanderiana Variegata | Bright indirect light (just back from a sunny window) | Soil: when top 2-3 cm is dry, every 7-10 days. Water culture: top up weekly, full change every 2-3 weeks | Toxic to pets |
| Dracaena Steudneri | Bright indirect light (just back from a sunny window) | When top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Dracaena Surculosa Florida Beauty | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Dracaena Thalioides | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Dracaena Trifasciata Mikado | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Dracaena Umbraculifera | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Dracaena Volkensii | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Dracaena Warneckii | Bright indirect light (just back from a sunny window) | Every 1-2 weeks; let the top 2-5 cm (1-2 in) of soil dry out first | Toxic to pets |
| Dracontium gigas | Bright indirect light (just back from a sunny window) | Keep evenly moist in active growth; let the top 3-4 cm dry between waterings, then withhold once the leaf yellows for dormancy | Toxic to pets |
| Dracontium polyphyllum | Bright indirect light (just back from a sunny window) | When the top few cm of soil dry while in leaf; nearly dry when dormant | Toxic to pets |
| Dragon Heart Cranesbill | Bright indirect light (just back from a sunny window) | Moderate; water during dry spells | Mildly toxic to pets |
| Dragon Tail Plant | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, roughly every 7-12 days | Toxic to pets |
| Dragon tree | Medium indirect light (a couple of metres from a window) | When the top half of the soil is dry, every 10-14 days | Toxic to pets |
| Dragon Tree Colorama | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Dragon Wing Begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days; more in heat | Toxic to pets |
| Dragon-Head Bamboo | Medium indirect light (a couple of metres from a window) | Twice weekly during the growing season; weekly in cool, wet periods | Pet-safe |
| Dragon-Shield Begonia | Bright indirect light (just back from a sunny window) | Every 10–14 days; allow partial drying between waterings | Toxic to pets |
| Dragon's tongue | Bright indirect light (just back from a sunny window) | When the top 2-3 cm is just dry, roughly every 5-9 days | Pet-safe |
| Dreaming Air Plant | Medium indirect light (a couple of metres from a window) | Mist 2–3 times per week; soak weekly | Pet-safe |
| Dressler's Anthurium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (about 1 inch) of mix is dry | Toxic to pets |
| Dressler's Zamia | Bright indirect light (just back from a sunny window) | Every 10–14 days (allow soil to partially dry) | Toxic to pets |
| Drooping Clivia | Bright indirect light (just back from a sunny window) | When top 3-4 cm of soil is dry, roughly every 7-12 days in growth | Toxic to pets |
| Drooping Leucothoe | Medium indirect light (a couple of metres from a window) | Every 5–7 days in the growing season; weekly in dry spells | Toxic to pets |
| Drooping Spleenwort | Medium indirect light (a couple of metres from a window) | Every 5–10 days; allow surface to approach dryness between waterings | Pet-safe |
| Drooping Star of Bethlehem | Bright indirect light (just back from a sunny window) | Low; rainfall usually sufficient in temperate gardens | Toxic to pets |
| Drooping Star of Bethlehem | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry during active growth, roughly every 7-10 days | Toxic to pets |
| Drooping Trillium | Medium indirect light (a couple of metres from a window) | Consistently moist throughout spring; can tolerate slightly drier conditions in summer dormancy. | Mildly toxic to pets |
| Drop Tongue Plant (Silver Schismatoglottis) | Bright indirect light (just back from a sunny window) | When the top 1-2 inches of soil are dry | Toxic to pets |
| Drosera capensis 'Alba' | Bright indirect light (just back from a sunny window) | Keep constantly wet, standing the pot in 1-2 cm of water (tray method) at all times | Pet-safe |
| Drosera tokaiensis | Bright indirect light (just back from a sunny window) | Keep media constantly wet; stand in 1-2 cm of pure water at all times in growth | Pet-safe |
| Druce's Cranesbill | Bright indirect light (just back from a sunny window) | Water during establishment; once established largely drought-tolerant | Pet-safe |
| Drummond's Aster | Medium indirect light (a couple of metres from a window) | Low to moderate | Pet-safe |
| dryas primulina | Medium indirect light (a couple of metres from a window) | Every 7–10 days in spring–summer; every 14–21 days in winter | Pet-safe |
| Drymonia serrulata | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 4-7 days | Mildly toxic to pets |
| Dryopteris carthusiana | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist, watering when the top 1-2 cm dries, roughly every 4-6 days | Mildly toxic to pets |
| Dryopteris dilatata | Medium indirect light (a couple of metres from a window) | Keep soil moist, watering when the top 2-3 cm dries, roughly every 5-7 days; established plants tolerate short dry spells | Mildly toxic to pets |
| Dryopteris dilatata 'Crispa Whiteside' | Medium indirect light (a couple of metres from a window) | Keep soil moist, watering when the top 2-3 cm dries, roughly every 5-7 days; established clumps tolerate brief dryness | Mildly toxic to pets |
| Dryopteris goldiana | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Dryopteris intermedia | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist, watering when the top 2-3 cm dries, roughly every 5-7 days; established plants take brief dry spells | Mildly toxic to pets |
| Dryopteris ludoviciana | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 4-6 days | Pet-safe |
| Duclouxs Petrocosmea | Medium indirect light (a couple of metres from a window) | Every 7–10 days in growth; sparingly in winter | Pet-safe |
| Dunn's cape primrose | Bright indirect light (just back from a sunny window) | Sparingly; allow soil to dry almost completely between waterings | Pet-safe |
| Durat's Air Plant | Bright indirect light (just back from a sunny window) | Mist thoroughly 2–3 times per week; a 20-minute soak once a week is sufficient in summer. Reduce to every 10–14 days in winter. | Pet-safe |
| Dusty zenobia | Bright indirect light (just back from a sunny window) | Consistently moist — water deeply and regularly, especially in summer heat | Toxic to pets |
| Dutch Staghorn Fern | Bright indirect light (just back from a sunny window) | When the mount feels dry or the shield fronds are crisp, soak every 7-14 days in growing season | Pet-safe |
| Dutchman's Breeches | Medium indirect light (a couple of metres from a window) | Every 3-5 days in spring; none needed once dormant | Toxic to pets |
| Dutchman's pipe | Bright indirect light (just back from a sunny window) | Every 5–7 days during the growing season; less in cool dormancy. | Toxic to pets |
| Duvalia caespitosa | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in summer; keep nearly dry in winter | Mildly toxic to pets |
| Duvalia corderoyi | Bright indirect light (just back from a sunny window) | When soil is completely dry, about every 10-14 days in summer; keep dry in winter | Mildly toxic to pets |
| Duvalia polita | Bright indirect light (just back from a sunny window) | When soil is fully dry, around every 10-14 days in summer; keep nearly dry in winter | Mildly toxic to pets |
| Dwarf Antimima | Bright indirect light (just back from a sunny window) | Sparingly in summer; moderately in autumn–spring | Pet-safe |
| Dwarf Astilbe 'Pumila' | Bright indirect light (just back from a sunny window) | Keep soil moist; water every 3-5 days in summer, more in heat | Mildly toxic to pets |
| Dwarf Bamboo | Bright indirect light (just back from a sunny window) | 2–3 times per week in summer, reduce in winter | Pet-safe |
| Dwarf blue rhododendron | Bright indirect light (just back from a sunny window) | Every 7–14 days in the growing season; sparingly in winter | Toxic to pets |
| Dwarf Cape Primrose | Bright indirect light (just back from a sunny window) | every 5–8 days in the growing season, every 10–14 days in winter | Pet-safe |
| Dwarf Cardamom | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Mildly toxic to pets |
| Dwarf Cardboard Palm | Bright indirect light (just back from a sunny window) | When the top few centimetres are dry, roughly every 7-12 days in growth | Toxic to pets |
| Dwarf Caribbean gesneria | Bright indirect light (just back from a sunny window) | Every 4–7 days; do not allow to dry out | Pet-safe |
| Dwarf Chin Cactus | Bright indirect light (just back from a sunny window) | When soil is completely dry, roughly every 10-14 days in summer; once every 4-6 weeks in winter | Pet-safe |
| Dwarf Chirita | Bright indirect light (just back from a sunny window) | Every 7–10 days | Pet-safe |
| Dwarf Cycad | Bright indirect light (just back from a sunny window) | Every 2–4 weeks | Toxic to pets |
| Dwarf Fan Palm | Bright indirect light (just back from a sunny window) | Every 7–10 days during growing season; reduce to fortnightly in cooler months | Pet-safe |
| Dwarf Fernleaf Bamboo | Medium indirect light (a couple of metres from a window) | Once or twice per week during the growing season; reduce significantly in winter | Pet-safe |
| Dwarf Frailea | Bright indirect light (just back from a sunny window) | When the soil is completely dry, roughly every 12-16 days in summer | Pet-safe |
| Dwarf Greenstripe Bamboo | Bright indirect light (just back from a sunny window) | 2–3 times per week in summer, once per week in winter | Pet-safe |
| Dwarf Henckelia | Medium indirect light (a couple of metres from a window) | Once or twice a week in the growing season; reduce in winter | Pet-safe |
| Dwarf Holly Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil feels dry, roughly every 5-7 days in summer | Pet-safe |
| Dwarf Horsetail | Medium indirect light (a couple of metres from a window) | Consistently wet; stand pot in water tray | Mildly toxic to pets |
| Dwarf Japanese Yew | Medium indirect light (a couple of metres from a window) | Moderate — drought-tolerant once established | Toxic to pets |
| Dwarf Lady's Mantle | Bright indirect light (just back from a sunny window) | Weekly during the growing season; established plants tolerate some drought | Pet-safe |
| dwarf lipstick vine | Bright indirect light (just back from a sunny window) | Every 7–10 days; allow top 2–3 cm to dry before re-watering | Pet-safe |
| Dwarf Mountain Laurel Elf | Bright indirect light (just back from a sunny window) | Regular; maintain even moisture | Toxic to pets |
| Dwarf Palmetto | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 5-7 days in growth | Mildly toxic to pets |
| Dwarf Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer, every 3–4 weeks in winter | Pet-safe |
| Dwarf Pieris | Bright indirect light (just back from a sunny window) | Regular; keep evenly moist | Toxic to pets |
| Dwarf Remusatia | Medium indirect light (a couple of metres from a window) | Every 5–7 days during active growth; reduce significantly during dormancy | Toxic to pets |
| Dwarf Rose-stripe Star | Bright indirect light (just back from a sunny window) | Water soil when top 2-3 cm dries out, roughly every 7-10 days | Pet-safe |
| Dwarf Rose-Stripe Star | Medium indirect light (a couple of metres from a window) | Water when the top 1-2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Dwarf Serbian Spruce | Bright indirect light (just back from a sunny window) | Every 7–14 days in the growing season; occasional deep watering in winter if soil is dry | Mildly toxic to pets |
| Dwarf Shell Ginger | Medium indirect light (a couple of metres from a window) | Regularly during the growing season; reduce in winter | Mildly toxic to pets |
| Dwarf Snowberry | Bright indirect light (just back from a sunny window) | Regularly, keeping soil consistently moist | Toxic to pets |
| Dwarf Solomon's Seal | Medium indirect light (a couple of metres from a window) | Every 5–7 days during active growth; less when dormant | Mildly toxic to pets |
| Dwarf Sugar Palm | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Dwarf Sugar Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in summer; every 14 days in winter | Pet-safe |
| Dwarf Sweet Flag | Medium indirect light (a couple of metres from a window) | Permanently moist to wet; tolerate shallow submersion | Pet-safe |
| Dwarf Sweet Flag | Bright indirect light (just back from a sunny window) | Keep soil permanently moist; water as soon as the surface feels barely dry | Mildly toxic to pets |
| Dwarf Tree Fern | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 5-7 days in summer | Pet-safe |
| Dwarf Umbrella Plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Dwarf Vanda | Bright indirect light (just back from a sunny window) | Daily to every 2 days in active growth; every 3–4 days in winter | Pet-safe |
| Dwarf Water Clover | Medium indirect light (a couple of metres from a window) | Permanently submerged or in saturated substrate | Mildly toxic to pets |
| Dwarf Whitestripe Bamboo | Bright indirect light (just back from a sunny window) | Consistently moist; water every 4–6 days during the growing season, reducing in autumn and winter | Pet-safe |
| Dyer's Air Plant | Medium indirect light (a couple of metres from a window) | Daily misting plus weekly soak | Pet-safe |
| Dyer's Macrozamia | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in growing season; once a month or less in summer drought/winter | Toxic to pets |
| Dynastes Masdevallia | Medium indirect light (a couple of metres from a window) | Water when medium approaches dryness, roughly every 1-2 days in warm months | Pet-safe |
| Dypsis Madagascariensis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in warmth | Mildly toxic to pets |
| Eared Abutilon | Bright indirect light (just back from a sunny window) | Every 5–7 days in growing season, every 10–14 days in winter | Pet-safe |
| Eared Sage | Bright indirect light (just back from a sunny window) | Weekly in summer, less in winter | Pet-safe |
| Eared Strobilanthes | Bright indirect light (just back from a sunny window) | 2–3 times weekly in summer; weekly in winter | Mildly toxic to pets |
| Early Bird goldfish plant | Bright indirect light (just back from a sunny window) | Water when the top third of the potting mix dries out — approximately every 7–10 days in the growing season, reducing to every 12–14 days in winter. | Pet-safe |
| Early Purple Orchid | Medium indirect light (a couple of metres from a window) | Moist in spring; reduce significantly once summer dormancy begins | Mildly toxic to pets |
| Earth Star | Bright indirect light (just back from a sunny window) | Water when the top 2-3 cm of mix is dry, roughly every 5-7 days | Pet-safe |
| East Indian Arrowroot | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days during active growth | Mildly toxic to pets |
| Easter Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3cm of compost dries, roughly weekly in growth | Pet-safe |
| Easter Lily | Bright indirect light (just back from a sunny window) | When top 2–3 cm of soil is dry | Toxic to pets |
| Easter Lily Cactus Clump | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 10-14 days in summer | Pet-safe |
| Easter Orchid | Bright indirect light (just back from a sunny window) | When the bark dries, roughly every 5-7 days in growth | Pet-safe |
| Eastern Cyclamen | Medium indirect light (a couple of metres from a window) | Minimal in summer dormancy; rely on rainfall during autumn–spring growth | Toxic to pets |
| Eastern Hemlock | Medium indirect light (a couple of metres from a window) | Weekly during establishment; regular moisture required long-term | Pet-safe |
| Eastern Red Columbine | Medium indirect light (a couple of metres from a window) | Water when the top 3-5 cm of soil dries, roughly weekly | Mildly toxic to pets |
| Echeveria 'Lola' | Bright indirect light (just back from a sunny window) | Every 2-3 weeks in the growing season; much less in winter | Pet-safe |
| Echeveria 'Lola' | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in summer | Pet-safe |
| Echidna Orchid | Medium indirect light (a couple of metres from a window) | Daily misting if mounted; every 1–2 days if potted | Pet-safe |
| Echinodorus 'Ozelot' | Medium indirect light (a couple of metres from a window) | Permanently submerged; 25-30% weekly water change | Mildly toxic to pets |
| Echinodorus 'Red Flame' | Bright indirect light (just back from a sunny window) | Permanently submerged; 25-30% weekly water change | Mildly toxic to pets |
| Echinodorus 'Vesuvius' | Medium indirect light (a couple of metres from a window) | Submerged aquatic; keep continuously underwater with a 25-30% water change weekly | Mildly toxic to pets |
| Echinodorus bleheri | Medium indirect light (a couple of metres from a window) | Permanently submerged; 25-30% weekly water change | Mildly toxic to pets |
| Echinodorus cordifolius | Medium indirect light (a couple of metres from a window) | Submerged to emersed; 25-30% weekly water change | Mildly toxic to pets |
| Echinodorus grisebachii 'Bleherae' | Medium indirect light (a couple of metres from a window) | Permanently submerged; 25-30% weekly water change | Mildly toxic to pets |
| Echinodorus tenellus | Bright indirect light (just back from a sunny window) | Permanently submerged; 25-30% weekly water change | Mildly toxic to pets |
| Echinodorus uruguayensis | Medium indirect light (a couple of metres from a window) | Submerged aquatic; keep continuously underwater with a 25-30% water change weekly | Mildly toxic to pets |
| Edge of Night Heliconia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Mildly toxic to pets |
| Edging lobelia | Bright indirect light (just back from a sunny window) | Every 2–3 days in warm weather; every 5–7 days in cool conditions | Toxic to pets |
| Edible Fockea | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season (spring–autumn); once a month or less in winter | Mildly toxic to pets |
| Egerton's Swan Orchid | Bright indirect light (just back from a sunny window) | Water generously every 3-5 days during active growth; reduce to once every 2-3 weeks once leaves drop and cease almost entirely in mid-winter rest | Pet-safe |
| Ehlers' Butterwort | Bright indirect light (just back from a sunny window) | Careful watering from below; drier in winter | Pet-safe |
| Eitape Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer, every 3–4 weeks in winter | Pet-safe |
| Eleanor Roosevelt Croton | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Elegant Ball Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in summer; every 3-4 weeks in winter | Pet-safe |
| Elegant Peacock Ginger | Medium indirect light (a couple of metres from a window) | Weekly during growing season; cease in winter dormancy | Pet-safe |
| Elegant Peacock Ginger | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil feels dry, roughly every 5-8 days in the growing season; cease watering during winter dormancy | Mildly toxic to pets |
| Eleocharis acicularis | Bright indirect light (just back from a sunny window) | Permanently submerged; 25-50% weekly water changes | Mildly toxic to pets |
| Eleocharis parvula | Bright indirect light (just back from a sunny window) | Permanently submerged; 25-50% weekly water changes | Mildly toxic to pets |
| Eleocharis sp. 'Mini' | Bright indirect light (just back from a sunny window) | Fully submerged; 30-50% aquarium water change weekly | Mildly toxic to pets |
| Eleocharis vivipara | Bright indirect light (just back from a sunny window) | Permanently submerged; 25-50% weekly water changes | Mildly toxic to pets |
| Elephant bush | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is fully dry, roughly every 10-14 days in summer | Pet-safe |
| Elephant ear | Bright indirect light (just back from a sunny window) | Soil should stay consistently moist during the growing season | Toxic to pets |
| Elephant Ear Staghorn Fern | Bright indirect light (just back from a sunny window) | Soak when the mount is light and nearly dry, roughly every 5-9 days | Pet-safe |
| Elephant Ears 'Bressingham White' | Medium indirect light (a couple of metres from a window) | Every 7-14 days; established plants are relatively drought-tolerant but perform best with consistent moisture | Mildly toxic to pets |
| Elephant Ears Bergenia | Medium indirect light (a couple of metres from a window) | Every 7–14 days in summer; reduce to once a month or less in winter | Pet-safe |
| Elephant Foot Yam | Bright indirect light (just back from a sunny window) | Freely when actively growing; stop completely once the leaf dies back | Toxic to pets |
| Elephant-foot Cyphostemma | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer; minimal in winter dormancy | Mildly toxic to pets |
| Elephant's Foot | Bright indirect light (just back from a sunny window) | Every 10–14 days during active vine growth; none during summer dormancy | Mildly toxic to pets |
| Elise's Cotyledon | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season, every 3–5 weeks in winter | Toxic to pets |
| Elk Blue Rush | Bright indirect light (just back from a sunny window) | Frequent to constant — keep soil consistently moist or wet | Pet-safe |
| Elk's Horn Fern | Bright indirect light (just back from a sunny window) | Soak when the mount feels light and dry, roughly every 5-10 days | Pet-safe |
| Elkhorn Plant | Bright indirect light (just back from a sunny window) | Every 2–4 weeks in growing season; monthly or less in summer dormancy | Mildly toxic to pets |
| Elliptic Ginger Lily | Bright indirect light (just back from a sunny window) | Moderate — water regularly but allow soil to partially dry between waterings | Mildly toxic to pets |
| Elm-Leaf Begonia | Bright indirect light (just back from a sunny window) | Every 7–10 days in growing season; reduce to every 14 days in winter | Toxic to pets |
| elongate sun pitcher | Bright indirect light (just back from a sunny window) | Daily; keep media permanently moist | Pet-safe |
| Elongated Sun Pitcher | Bright indirect light (just back from a sunny window) | Soil kept consistently moist to wet year-round; shallow tray method acceptable | Mildly toxic to pets |
| Elymaitic Rosularia | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in spring/summer; monthly or less in autumn/winter | Mildly toxic to pets |
| Emei Mountain Begonia | Medium indirect light (a couple of metres from a window) | Every 7–10 days in growth; reduce significantly in winter dormancy | Toxic to pets |
| Emerald Gaiety Euonymus | Bright indirect light (just back from a sunny window) | Weekly while establishing, then every 10-14 days once mature | Toxic to pets |
| Emerald n Gold Euonymus | Bright indirect light (just back from a sunny window) | Weekly while establishing, then every 10-14 days once mature | Toxic to pets |
| Emerald Queen Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days in spring and summer | Pet-safe |
| Emerald Ripple Peperomia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 7-14 days in growth and far less in winter | Pet-safe |
| Emerald Spike Moss | Medium indirect light (a couple of metres from a window) | Keep the soil consistently, evenly moist — never let it dry out | Pet-safe |
| Emperor Sago | Bright indirect light (just back from a sunny window) | When the top half of the pot is dry, roughly every 10-14 days | Toxic to pets |
| Empire Scarlet Star | Medium indirect light (a couple of metres from a window) | Keep the central urn filled; water the medium every 1–2 weeks | Pet-safe |
| Empress Wu Hosta | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 4-6 days in growth | Toxic to pets |
| Encephalartos Villosus | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-12 days in growth, reduced in winter | Toxic to pets |
| Encore Azalea 'Autumn Twist' | Bright indirect light (just back from a sunny window) | About 2-3 times per week while establishing, then weekly; water when the top 2-3 cm of soil is dry | Toxic to pets |
| Encyclia cochleata | Bright indirect light (just back from a sunny window) | Water about weekly, letting the medium approach dryness between drinks | Pet-safe |
| Encyclia cordigera | Bright indirect light (just back from a sunny window) | Water roughly weekly in summer growth; reduce to occasional during the cooler winter rest | Pet-safe |
| Encyclia tampensis | Bright indirect light (just back from a sunny window) | When roots and medium are nearly dry, about every 3-5 days in growth | Pet-safe |
| Endres's Bladderwort | Bright indirect light (just back from a sunny window) | Keep substrate continuously moist; water every 1–3 days or as sphagnum surface begins to dry slightly | Mildly toxic to pets |
| English Bluebell | Medium indirect light (a couple of metres from a window) | Moderate; naturally moist in spring, drier in summer | Toxic to pets |
| English ivy | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, every 7-10 days | Toxic to pets |
| English Yew Bonsai | Bright indirect light (just back from a sunny window) | When the top 2-3 cm is dry, around every 2-4 days in summer and less in winter | Toxic to pets |
| Entire-Lipped Catasetum | Bright indirect light (just back from a sunny window) | Abundantly during active growth (spring–autumn); near-dry during winter dormancy | Pet-safe |
| Epidendrum porpax | Bright indirect light (just back from a sunny window) | Keep evenly, lightly moist year-round; mist or water mounts daily to every few days | Pet-safe |
| Epiphytic Zamia | Bright indirect light (just back from a sunny window) | Every 7–10 days; do not allow to dry out completely | Toxic to pets |
| Epipremnum amplissimum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Epipremnum amplissimum 'Silver Streak' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Epipremnum Aureum Global Green | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Epipremnum Aureum Harlequin | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Epipremnum Aureum Jessenia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Epipremnum Aureum Shangri-La | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Epipremnum Aureum Snow Queen | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Epipremnum pinnatum 'Albo Variegata' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Epipremnum Pinnatum Albo | Bright indirect light (just back from a sunny window) | Roughly every 7-10 days in growth; let the top 3-5 cm (1-2 in) dry first | Toxic to pets |
| Epipremnum Pinnatum Dragon Tail | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Epipremnum Pinnatum Skeleton Key | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-12 days | Toxic to pets |
| Episcia 'Cleopatra' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil begins to dry, roughly every 5-7 days | Pet-safe |
| Episcia 'Moss Agate' | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 4-7 days | Pet-safe |
| Episcia 'Pink Acajou' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, about every 5-7 days | Pet-safe |
| Episcia 'Silver Skies' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, about every 5-7 days | Pet-safe |
| Episcia cupreata 'Silver Sheen' | Bright indirect light (just back from a sunny window) | Water when the top 1-2 cm of soil is dry, about every 5-7 days | Pet-safe |
| Episcia lilacina | Bright indirect light (just back from a sunny window) | Water when the top 1-2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Episcia reptans | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 4-7 days | Pet-safe |
| Equal-Wing Begonia | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil becomes dry | Toxic to pets |
| Eranthemum pulchellum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-7 days in growth | Mildly toxic to pets |
| Erect Moss Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 4-6 days | Pet-safe |
| Ernst's Spurflower | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in summer; monthly or less in winter | Mildly toxic to pets |
| Erythronium 'Pagoda' | Bright indirect light (just back from a sunny window) | Keep soil cool and evenly moist in spring; never let bulbs dry out completely | Mildly toxic to pets |
| Escargot Begonia | Bright indirect light (just back from a sunny window) | When the top 1-1.5 inches of mix dries out (roughly every 5-9 days indoors) | Toxic to pets |
| Escargot Rex Begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Escobar's Lepanthes | Medium indirect light (a couple of metres from a window) | Daily or every 2 days; keep medium consistently moist | Pet-safe |
| Escobar's Lepanthes | Medium indirect light (a couple of metres from a window) | Daily misting or near-daily watering; substrate should never fully dry out | Pet-safe |
| Eternal Flame Plant | Bright indirect light (just back from a sunny window) | Roughly weekly in spring and summer; every 10-14 days in winter | Pet-safe |
| Euphorbia bubalina | Bright indirect light (just back from a sunny window) | When the top few centimetres are dry, about weekly in summer; sparingly in winter | Toxic to pets |
| Euphorbia bupleurifolia | Bright indirect light (just back from a sunny window) | When the soil is dry while in leaf and active growth; keep nearly dry while leafless and dormant | Toxic to pets |
| Euphorbia cylindrifolia | Bright indirect light (just back from a sunny window) | When the soil is dry in the growing season, roughly every 1-2 weeks; sparing in winter | Toxic to pets |
| Euphorbia decaryi | Bright indirect light (just back from a sunny window) | When the soil is dry, roughly every 1-2 weeks in the growing season, sparingly in winter | Toxic to pets |
| Euphorbia flanaganii | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in the growing season, monthly or less in winter | Toxic to pets |
| Euphorbia francoisii | Bright indirect light (just back from a sunny window) | When the soil is dry, roughly every 1-2 weeks in the growing season, sparingly in winter | Toxic to pets |
| Euphorbia ingens | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 2-3 weeks in summer | Toxic to pets |
| Euphorbia lactea 'White Ghost' | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in summer, monthly or less in winter | Toxic to pets |
| Euphorbia mammillaris | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in summer, monthly or less in winter | Toxic to pets |
| Euphorbia meloformis | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in summer | Toxic to pets |
| Euphorbia stellata | Bright indirect light (just back from a sunny window) | Sparingly when fully dry in growth, roughly every 2-3 weeks in summer; none while dormant | Toxic to pets |
| Euphorbia Trigona 'Rubra' | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Toxic to pets |
| European Chain Fern | Medium indirect light (a couple of metres from a window) | 3-4 times per week in growing season; reduce slightly in winter | Mildly toxic to pets |
| European Columbine | Medium indirect light (a couple of metres from a window) | Water when the top 3 cm of soil dries, roughly weekly | Mildly toxic to pets |
| Eveline's Wax Plant | Medium indirect light (a couple of metres from a window) | Every 7–10 days in summer, every 2–3 weeks in winter | Pet-safe |
| Even-stamen Columnea | Bright indirect light (just back from a sunny window) | When top 2–3 cm of mix dries | Pet-safe |
| Evergold Japanese Sedge | Medium indirect light (a couple of metres from a window) | Every 5-7 days or when the top 2 cm of soil is dry | Pet-safe |
| Evergold Sedge | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top 2-3 cm of soil is dry, roughly every 5-7 days | Mildly toxic to pets |
| Evergreen Amaryllis | Bright indirect light (just back from a sunny window) | Year-round watering every 7–14 days; slightly reduced in winter but never fully withheld | Toxic to pets |
| Expanded Lobster Claw | Bright indirect light (just back from a sunny window) | Every 2–4 days in the growing season, reducing in winter | Mildly toxic to pets |
| Exquisite Masdevallia | Medium indirect light (a couple of metres from a window) | Every 1–3 days depending on season and medium; do not allow to dry | Pet-safe |
| Extended Alcantarea | Bright indirect light (just back from a sunny window) | Every 1–2 weeks in summer; every 3–4 weeks in winter | Pet-safe |
| Eyelash Begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (1 inch) of soil is dry, roughly weekly in summer | Toxic to pets |
| Eyelash Begonia | Medium indirect light (a couple of metres from a window) | When the top 1–2 cm of soil is dry | Toxic to pets |
| Eyelash Sage | Bright indirect light (just back from a sunny window) | Every 7-10 days once established | Pet-safe |
| Fadang | Bright indirect light (just back from a sunny window) | Every 7–14 days in the growing season; every 3–4 weeks in winter | Toxic to pets |
| Fairies' Thimbles | Bright indirect light (just back from a sunny window) | Weekly during active growth; less in winter | Pet-safe |
| fairy aprons | Bright indirect light (just back from a sunny window) | Keep media constantly wet; use the tray method year-round | Pet-safe |
| Fairy Bells | Bright indirect light (just back from a sunny window) | Regular watering autumn to spring; completely dry in summer | Mildly toxic to pets |
| Fairy Castle Cactus | Bright indirect light (just back from a sunny window) | Every 2-3 weeks in spring/summer; every 4-6 weeks in winter | Mildly toxic to pets |
| Fairy Thimbles | Bright indirect light (just back from a sunny window) | Moderate — water regularly during the growing season | Mildly toxic to pets |
| Falconer's Sundew | Bright indirect light (just back from a sunny window) | Deep tray (growing season); very reduced (rest) | Pet-safe |
| False Aralia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm is dry, roughly every 7-10 days in growth | Pet-safe |
| False Pereskia Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring and summer; reduce to every 3–4 weeks in winter | Pet-safe |
| False shamrock | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, every 5-7 days | Toxic to pets |
| False Solomon's Seal | Medium indirect light (a couple of metres from a window) | 2–3 times per week in the growing season; reduce in dormancy | Mildly toxic to pets |
| Fan Air Plant | Bright indirect light (just back from a sunny window) | Mist 2–3 times per week, or a 15–20 minute soak once a week | Pet-safe |
| Fanal astilbe | Medium indirect light (a couple of metres from a window) | 2–3 times per week in summer; weekly in cool or wet seasons | Pet-safe |
| Fanged Pitcher Plant | Bright indirect light (just back from a sunny window) | Regularly — maintain consistently moist medium | Mildly toxic to pets |
| Farrer's Gentian | Bright indirect light (just back from a sunny window) | Keep consistently moist throughout the growing season | Mildly toxic to pets |
| Fascinator Zebra Plant | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; reduce when flowering | Pet-safe |
| Fastigiata Yew | Medium indirect light (a couple of metres from a window) | When the top 5 cm of soil is dry, about weekly while establishing | Toxic to pets |
| Faucaria Tuberculosa | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 1-2 weeks in active growth | Mildly toxic to pets |
| Faulkner box | Bright indirect light (just back from a sunny window) | Weekly when young; every 10–14 days once established | Toxic to pets |
| Feather Cactus | Bright indirect light (just back from a sunny window) | Every 2-3 weeks in spring/summer; keep nearly dry in winter | Pet-safe |
| Featherleaf Rodgersia 'Superba' | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; water deeply 2-3 times per week in dry spells, more in summer heat | Mildly toxic to pets |
| Feathery Air Plant | Bright indirect light (just back from a sunny window) | Mist lightly every 2–3 days in warm conditions; reduce to every 4–5 days in cooler weather. | Pet-safe |
| Fern-Leaf Begonia | Bright indirect light (just back from a sunny window) | When the top 1–2 cm of soil begins to dry | Toxic to pets |
| Fetcani Pass Twinspur | Bright indirect light (just back from a sunny window) | Water when top 2–3 cm of soil dries out | Mildly toxic to pets |
| Few-flowered Abutilon | Bright indirect light (just back from a sunny window) | Every 7–10 days in active growth; fortnightly in cooler months | Pet-safe |
| Few-flowered Lysionotus | Medium indirect light (a couple of metres from a window) | Once or twice a week in the growing season; once a week or less in winter | Pet-safe |
| Few-flowered Neoregelia | Bright indirect light (just back from a sunny window) | Keep the central cup topped with water; allow potting medium or mount to dry slightly between waterings | Pet-safe |
| Few-Flowered Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–10 days in growing season; reduce to every 3–4 weeks in winter | Pet-safe |
| Few-leaflet Zamia | Bright indirect light (just back from a sunny window) | Every 3–4 weeks | Toxic to pets |
| Fiber Optic Grass | Bright indirect light (just back from a sunny window) | Keep constantly moist to wet; never allow it to dry out | Mildly toxic to pets |
| Ficus Abidjan (burgundy rubber plant) | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Ficus Altissima 'Yellow Gem' | Bright indirect light (just back from a sunny window) | When the top 5 cm (2 in) of soil is dry | Toxic to pets |
| Ficus Audrey | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Ficus Melany (compact rubber plant) | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-14 days | Toxic to pets |
| Ficus microcarpa | Bright indirect light (just back from a sunny window) | When top 2-3 cm of soil is dry, often every 4-7 days indoors | Toxic to pets |
| Ficus pumila 'Minima' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 4-7 days | Toxic to pets |
| Ficus pumila 'Variegata' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 4-7 days | Toxic to pets |
| Ficus Retusa Bonsai | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil feels dry, often every 2-4 days in growth | Toxic to pets |
| Ficus Ruby | Bright indirect light (just back from a sunny window) | When the top 2-5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Ficus Tineke (variegated rubber plant) | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-14 days | Toxic to pets |
| Fiddle leaf fig | Bright indirect light (just back from a sunny window) | When the top 5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Fiddle-Leaf Fig Bambino | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, typically every 7-10 days | Toxic to pets |
| Fiebrig's Crown Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days in spring and summer; every 4-6 weeks in autumn; minimal to none in winter | Pet-safe |
| Field Quesnelia | Bright indirect light (just back from a sunny window) | Tank every 7 days; soil every 10–14 days | Pet-safe |
| Fiery Costus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer; every 10-14 days in winter | Mildly toxic to pets |
| Fiery Masdevallia | Bright indirect light (just back from a sunny window) | Daily in warm weather; every 3–5 days in cool/winter months | Pet-safe |
| Fiesta Double Pink Impatiens | Medium indirect light (a couple of metres from a window) | Keep compost evenly moist at all times; water every 1-2 days in warm weather as double-flowered types are slightly more moisture-demanding than singles | Mildly toxic to pets |
| Filmy Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 2–3 days in summer, every 4–5 days in winter | Pet-safe |
| Fingerroot Ginger | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days during the growing season | Mildly toxic to pets |
| Fingers Anthurium | Bright indirect light (just back from a sunny window) | Water when the top 2-3 cm (about 1 inch) of substrate has dried | Toxic to pets |
| Fingertips | Bright indirect light (just back from a sunny window) | Every 2–3 weeks autumn through spring; minimal to none in summer | Pet-safe |
| Finlaysonii Wax Plant | Bright indirect light (just back from a sunny window) | Every 1-2 weeks; let the top half of the mix dry out first | Pet-safe |
| Fire Alarm Heuchera | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, about weekly | Pet-safe |
| Fire and Ice Hosta | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Fire Flash Spider Plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in summer | Pet-safe |
| Firecracker plant | Bright indirect light (just back from a sunny window) | Every 4–7 days; never allow soil to dry fully | Pet-safe |
| Fireflush Rex Begonia | Medium indirect light (a couple of metres from a window) | Every 7–12 days; bottom-water preferred | Toxic to pets |
| Fischer's Begonia | Bright indirect light (just back from a sunny window) | Every 7–10 days; allow top 2–3 cm to dry between waterings | Toxic to pets |
| Fischer's Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–14 days in summer, every 3–4 weeks in winter | Pet-safe |
| Fishbone Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| Fishbone Fern | Medium indirect light (a couple of metres from a window) | Water when the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Fishbone Prayer Plant | Bright indirect light (just back from a sunny window) | When the top 1-2 cm (about half an inch to an inch) of soil feels dry, roughly weekly in summer | Mildly toxic to pets |
| Fishtail palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 5-7 days | Mildly toxic to pets |
| Fishtail Sword Fern | Medium indirect light (a couple of metres from a window) | Every 3–5 days in warm weather; every 6–8 days in cooler months | Pet-safe |
| Fittonia | Medium indirect light (a couple of metres from a window) | When the top 1 cm of soil is dry, every 3-5 days | Pet-safe |
| Fittonia 'Frankie' | Medium indirect light (a couple of metres from a window) | When the top 1 cm of soil begins to dry, roughly every 3-5 days | Pet-safe |
| Fittonia 'White Anne' | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil begins to dry, typically every 4-7 days | Pet-safe |
| Fittonia albivenis 'Juanita' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil begins to dry, often every 3-5 days | Pet-safe |
| Fittonia albivenis 'Pink Angel' | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil begins to dry, often every 4-7 days | Pet-safe |
| Fittonia albivenis 'Purple Vein' | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil just starts to dry, often every 3-5 days | Pet-safe |
| Fittonia albivenis 'Red Anne' | Bright indirect light (just back from a sunny window) | When the top 1 cm of soil starts to dry, often every 3-5 days | Pet-safe |
| Fittonia albivenis 'Skeleton' | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil just begins to dry, often every 3-5 days | Pet-safe |
| Fitzgerald's Sarcochilus | Bright indirect light (just back from a sunny window) | Every 3-5 days during the growing season; every 7-10 days in cooler months | Pet-safe |
| Five Fingers Arrowhead Vine | Medium indirect light (a couple of metres from a window) | Every 7–10 days in growth; every 10–14 days in winter | Toxic to pets |
| Five-Fingers Syngonium | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in summer and every 10-14 days in winter | Toxic to pets |
| Five-leaf akebia | Medium indirect light (a couple of metres from a window) | Once a week when establishing; drought-tolerant once mature | Mildly toxic to pets |
| Five-Nerved Wax Plant | Bright indirect light (just back from a sunny window) | Every 7-14 days during active growth; every 14-21 days in winter | Pet-safe |
| Flag Pansy Orchid | Bright indirect light (just back from a sunny window) | When the medium is nearly dry, roughly every 5-7 days in summer | Pet-safe |
| Flag-bearer Dendrobium | Bright indirect light (just back from a sunny window) | When medium begins to dry, approximately every 2-4 days in active growth | Pet-safe |
| Flame nasturtium | Bright indirect light (just back from a sunny window) | Water regularly to maintain consistent moisture, especially in spring and summer | Pet-safe |
| Flame violet | Bright indirect light (just back from a sunny window) | Roughly once or twice a week; keep the mix lightly, evenly moist | Pet-safe |
| Flame Violet | Bright indirect light (just back from a sunny window) | When the top 1–2 cm of soil is dry | Pet-safe |
| Flaming Sword Bromeliad | Bright indirect light (just back from a sunny window) | Refill cup every 5–7 days; flush monthly | Pet-safe |
| Flamingo Flower | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix feels dry, roughly weekly in growth | Toxic to pets |
| Flamingo pieris | Bright indirect light (just back from a sunny window) | Weekly during dry weather | Toxic to pets |
| Flandria Blushing Bromeliad | Bright indirect light (just back from a sunny window) | Refresh central cup weekly; water soil every 2–3 weeks | Pet-safe |
| Flat-Leaf Wax Plant | Bright indirect light (just back from a sunny window) | Every 7-14 days in spring and summer; reduce to every 14-21 days in winter | Pet-safe |
| Flat-Leaved Crassula | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, approximately every 10-14 days in summer | Toxic to pets |
| Flat-lipped Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep medium evenly moist; water every 2–4 days | Mildly toxic to pets |
| Flat-Stem Wax Plant | Bright indirect light (just back from a sunny window) | Every 10-14 days in active growth; less frequently in winter | Pet-safe |
| Flesh-coloured Habenaria | Bright indirect light (just back from a sunny window) | Every 3-5 days during active growth; completely dry during dormancy | Pet-safe |
| Flesh-pink Sinningia | Bright indirect light (just back from a sunny window) | Every 7–10 days in growth; near-dry during dormancy | Mildly toxic to pets |
| Fleshy Orbea | Bright indirect light (just back from a sunny window) | When the soil is completely dry, roughly every 10-14 days in summer and monthly or less in winter | Mildly toxic to pets |
| Flexuous Dancing Lady | Bright indirect light (just back from a sunny window) | When the top of the bark mix is dry, approximately every 7 days in summer and every 10-14 days in winter | Pet-safe |
| Flexuous Oncidium | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; every 10–14 days in winter rest | Pet-safe |
| Floating Aponogeton | Medium indirect light (a couple of metres from a window) | Permanently submerged bulb with floating leaves; fortnightly 20–25% water changes | Pet-safe |
| Florida Arrowroot | Bright indirect light (just back from a sunny window) | Every 14–21 days; much less in winter | Toxic to pets |
| Florida Beauty | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Toxic to pets |
| Florida Columnea | Bright indirect light (just back from a sunny window) | When top 2–3 cm of mix dries | Pet-safe |
| Florida Ghost | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Florida Torreya | Medium indirect light (a couple of metres from a window) | When the top 5 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Florist's Cyclamen | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil feels dry, roughly every 5-7 days | Toxic to pets |
| Florist's Gloxinia | Bright indirect light (just back from a sunny window) | Keep evenly moist during active growth; typically water once the top of the mix begins to dry, then taper off completely heading into dormancy. | Pet-safe |
| Flowering coleus | Bright indirect light (just back from a sunny window) | Twice-weekly watering | Toxic to pets |
| Flowering currant | Bright indirect light (just back from a sunny window) | Weekly when establishing; drought-tolerant once mature | Mildly toxic to pets |
| Flowering Dogwood | Bright indirect light (just back from a sunny window) | Keep evenly moist; water deeply weekly in dry spells | Mildly toxic to pets |
| Flowering Dogwood 'Cherokee Chief' | Bright indirect light (just back from a sunny window) | Weekly deep watering, more in drought | Pet-safe |
| Flowering tobacco | Bright indirect light (just back from a sunny window) | Every 3–5 days; keep soil consistently moist | Toxic to pets |
| Fluffy Ruffle Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil feels barely moist, roughly every 5-7 days in summer | Pet-safe |
| Fly Orchid | Bright indirect light (just back from a sunny window) | Seasonal; moist in spring, drier in summer dormancy | Mildly toxic to pets |
| Fly-catching Restrepia | Medium indirect light (a couple of metres from a window) | Every 2–4 days; allow the surface to barely begin to dry | Pet-safe |
| Foamy Bells 'Sweet Tea' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 5-7 days in summer | Mildly toxic to pets |
| Footstool Palm | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 5-7 days in growth | Mildly toxic to pets |
| Forbes' Glory of the Snow | Bright indirect light (just back from a sunny window) | Minimal once established; natural rainfall usually sufficient during growing season | Mildly toxic to pets |
| Forbes' Glory of the Snow | Bright indirect light (just back from a sunny window) | Relies on natural rainfall during its growing season; water lightly if spring is unusually dry | Toxic to pets |
| Forest Elephant's Foot | Bright indirect light (just back from a sunny window) | Every 1–2 weeks during active growth (autumn to spring); withhold almost entirely in summer dormancy | Mildly toxic to pets |
| Forest Epipremnum | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry, roughly every 8-12 days | Toxic to pets |
| Forest Flame pieris | Bright indirect light (just back from a sunny window) | Weekly during dry periods | Toxic to pets |
| Forest Flame Pieris | Bright indirect light (just back from a sunny window) | Every 7-10 days in the growing season; established plants roughly every 10-14 days, more frequently during dry spells | Toxic to pets |
| Forest Lily Amaryllis | Medium indirect light (a couple of metres from a window) | Regular during growing season (every 7–10 days); significantly reduced or withheld during dormancy | Toxic to pets |
| Forest Pepper | Medium indirect light (a couple of metres from a window) | Every 6–9 days; allow top 3–4 cm of soil to dry | Mildly toxic to pets |
| Forest Spurflower | Medium indirect light (a couple of metres from a window) | Every 7-10 days in the growing season; every 14-21 days in winter | Mildly toxic to pets |
| Forget-me-not | Medium indirect light (a couple of metres from a window) | Weekly watering | Pet-safe |
| Forget's Anthurium | Bright indirect light (just back from a sunny window) | Roughly once or twice a week in the growing season, less in winter | Toxic to pets |
| Forked Aichryson | Bright indirect light (just back from a sunny window) | Every 10–14 days during active growth; reduced in winter rest | Mildly toxic to pets |
| Forked Begonia | Bright indirect light (just back from a sunny window) | Every 7–10 days in growing season; reduce to every 14–21 days in winter | Toxic to pets |
| Forked Spleenwort | Medium indirect light (a couple of metres from a window) | Sparingly — water only when the growing medium is dry | Mildly toxic to pets |
| Formosan Polypody | Medium indirect light (a couple of metres from a window) | Every 5–7 days in active growth; every 10–14 days in cooler months | Pet-safe |
| Formosanum Toad Lily | Medium indirect light (a couple of metres from a window) | Keep consistently moist; water when the top of the soil begins to dry, often twice weekly in summer heat | Mildly toxic to pets |
| Forrest Ginger Lily | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Forrest's Ginger Lily | Bright indirect light (just back from a sunny window) | Generously and consistently through spring and summer | Mildly toxic to pets |
| Forrest's pieris | Bright indirect light (just back from a sunny window) | Regular; do not allow to dry out | Toxic to pets |
| Forrests Petrocosmea | Medium indirect light (a couple of metres from a window) | Every 7–10 days in growth; very sparingly in winter | Pet-safe |
| Forsythia Sage | Bright indirect light (just back from a sunny window) | Weekly during active growth | Pet-safe |
| Fortune Plum Yew | Medium indirect light (a couple of metres from a window) | When the top 5 cm of soil is dry, roughly every 10-14 days in the growing season | Toxic to pets |
| Fortune's Basket Fern | Bright indirect light (just back from a sunny window) | Allow the rhizome to dry out partially between waterings, roughly every 7-14 days depending on season | Mildly toxic to pets |
| Fortune's Holly Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Fortune's Holly Fern | Medium indirect light (a couple of metres from a window) | Every 7–10 days; allow top few centimetres to dry between waterings | Mildly toxic to pets |
| Fortune's Plum Yew | Medium indirect light (a couple of metres from a window) | Every 7–14 days; allow the top inch of soil to partially dry between waterings | Toxic to pets |
| Foster's Basket Bromeliad | Medium indirect light (a couple of metres from a window) | Tank every 5–7 days; soil every 10–14 days | Pet-safe |
| Foster's Canistrum | Bright indirect light (just back from a sunny window) | Keep the central tank filled; flush and refill every 1-2 weeks to prevent stagnation | Pet-safe |
| Foster's Neoregelia | Bright indirect light (just back from a sunny window) | Refill the central cup every 5-7 days; water the medium when the top 2-3 cm is dry, roughly every 10-14 days | Pet-safe |
| Fountain Bamboo | Medium indirect light (a couple of metres from a window) | Twice weekly during the growing season; once weekly in cool periods | Pet-safe |
| Four-angled cassiope | Bright indirect light (just back from a sunny window) | Regularly during the growing season; keep consistently moist but never waterlogged | Pet-safe |
| Four-Flowered Racinaea | Bright indirect light (just back from a sunny window) | Mist foliage thoroughly 3-4 times per week; soak weekly in warm water for 15-30 minutes | Pet-safe |
| Four-Leaf Water Clover | Bright indirect light (just back from a sunny window) | Aquatic — grows in shallow water or moist substrate permanently | Pet-safe |
| Foxglove | Bright indirect light (just back from a sunny window) | Regularly — weekly in summer, less in winter | Toxic to pets |
| Foxglove 'Camelot Lavender' | Bright indirect light (just back from a sunny window) | Once or twice a week in dry conditions, ensuring even moisture during flower spike development | Toxic to pets |
| Foxglove 'Camelot' | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water weekly in dry weather | Toxic to pets |
| Foxglove Sage | Bright indirect light (just back from a sunny window) | Regular — keep soil evenly moist but not saturated | Mildly toxic to pets |
| Foxtail Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 inches of soil are dry | Toxic to pets |
| Foxtail Orchid | Bright indirect light (just back from a sunny window) | When the bark approaches dryness, typically every 7-10 days | Pet-safe |
| Fragrans Maidenhair Fern | Bright indirect light (just back from a sunny window) | Keep evenly moist at all times, often every 2-4 days | Pet-safe |
| Fragrant Bouquet Hosta | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist; water deeply 1-2 times weekly, more in heat | Toxic to pets |
| Fragrant Hosta 'Guacamole' | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, about every 5-7 days; more in sun and heat | Toxic to pets |
| Fragrant Maidenhair Fern | Bright indirect light (just back from a sunny window) | When the surface just begins to dry, roughly every 3-5 days | Pet-safe |
| Fragrant Peace Lily | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-10 days | Toxic to pets |
| Fragrant Stanhopea | Bright indirect light (just back from a sunny window) | Daily or near-daily during active growth; reduce to every 2–3 days in winter | Pet-safe |
| Fragrant Stomatium | Bright indirect light (just back from a sunny window) | Sparingly in summer; every 2–3 weeks in autumn–spring | Pet-safe |
| Francee Hosta | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Fred Ives | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring/summer; every 3–4 weeks in winter | Pet-safe |
| Free-Flowering Cymbidium | Bright indirect light (just back from a sunny window) | Every 5–7 days in growth; every 10 days in winter | Pet-safe |
| Free-flowering Streptocarpus | Bright indirect light (just back from a sunny window) | Water when the top 1 cm of compost feels dry; roughly every 5–7 days in summer, less frequently in winter. | Pet-safe |
| Freely Flowering Angraecum | Medium indirect light (a couple of metres from a window) | Every 3–5 days; avoid complete drying out | Pet-safe |
| Friedrich's Window Plant | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in autumn and spring; minimal to none in summer | Mildly toxic to pets |
| Friedrichsthals Copper Leaf | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; minimal in dormancy | Pet-safe |
| Friendship Plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Pet-safe |
| Fringed Bleeding Heart | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly weekly | Toxic to pets |
| Fringed Cobra Lily | Medium indirect light (a couple of metres from a window) | Regularly during growing season; reduce in dormancy | Toxic to pets |
| Fringed Coelogyne | Medium indirect light (a couple of metres from a window) | Every 7-10 days in the growing season; every 14-21 days in cooler months | Pet-safe |
| Fringed Loosestrife | Medium indirect light (a couple of metres from a window) | Regularly; keep soil consistently moist to wet | Mildly toxic to pets |
| Fringed Miniature Stelis | Medium indirect light (a couple of metres from a window) | Daily or near-daily; roots must not dry completely between watering | Pet-safe |
| Fringed Spurflower | Medium indirect light (a couple of metres from a window) | Regularly — keep soil evenly moist throughout the growing season | Mildly toxic to pets |
| Fringed Star Orchid | Bright indirect light (just back from a sunny window) | Every 4–7 days in active growth; every 7–10 days in winter | Pet-safe |
| Fringed Star Orchid | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of the mix feels dry, roughly every 7-10 days | Pet-safe |
| Fringed Stelis | Medium indirect light (a couple of metres from a window) | Every 1–3 days depending on mount or medium and ambient temperature | Pet-safe |
| Fringed-sepal Primulina | Medium indirect light (a couple of metres from a window) | Reduced in winter; moderate in spring and summer | Mildly toxic to pets |
| Fritsch's Goldfish Plant | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry | Pet-safe |
| Fritschs Pouch Flower | Bright indirect light (just back from a sunny window) | Every 5–7 days in growth; reduce in winter to every 10–14 days | Pet-safe |
| Fritz Luth Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 2–3 days in spring and summer; every 3–5 days in winter | Pet-safe |
| Fritz Luth Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 2–3 days in growing season; every 4–5 days in winter | Pet-safe |
| Frohnleiten Epimedium | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry, roughly every 1-2 weeks | Mildly toxic to pets |
| frost grass | Medium indirect light (a couple of metres from a window) | Weekly or whenever the top 2–3 cm of soil dries out; reduce in autumn and winter | Pet-safe |
| Frosted Curls Sedge | Bright indirect light (just back from a sunny window) | Weekly, or when top 2-3 cm of soil is dry | Pet-safe |
| Frosty Fern | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the surface just begins to dry, often 2-3 times per week | Pet-safe |
| Fuchsia | Bright indirect light (just back from a sunny window) | When the top 1-2 inches of soil feel dry (often every few days in summer) | Pet-safe |
| Fuchsia 'Alice Hoffman' | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil or compost are dry, roughly every 7-10 days | Pet-safe |
| Fuchsia 'Annabel' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of compost are dry, roughly every 5-7 days in summer | Pet-safe |
| Fuchsia 'Beacon' | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil or compost are dry, roughly every 7-10 days in summer | Pet-safe |
| Fuchsia 'Brutus' | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil or compost are dry, roughly every 7-10 days | Pet-safe |
| Fuchsia 'Cardinal Farges' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil are dry, roughly every 8-12 days when established | Pet-safe |
| Fuchsia 'Celia Smedley' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of compost is dry, roughly every 3-5 days in summer | Mildly toxic to pets |
| Fuchsia 'Checkerboard' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of compost feels dry, roughly every 3-5 days in summer | Mildly toxic to pets |
| Fuchsia 'Dark Eyes' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of compost is dry, roughly every 2-4 days in summer baskets | Mildly toxic to pets |
| Fuchsia 'Dollar Princess' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of compost feels dry, roughly every 5-7 days in summer | Pet-safe |
| Fuchsia 'Gartenmeister Bonstedt' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 3-5 days in warm weather | Pet-safe |
| Fuchsia 'Golden Marinka' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of compost is dry, roughly every 5-7 days in summer | Pet-safe |
| Fuchsia 'Lady Thumb' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of compost is dry, roughly every 5-7 days in active growth | Pet-safe |
| Fuchsia 'Marinka' | Bright indirect light (just back from a sunny window) | When the top 2 cm of compost are dry, roughly every 5-7 days; daily checks in hot weather | Pet-safe |
| Fuchsia 'Mrs Popple' | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil or compost is dry, roughly every 3-5 days during active growth | Pet-safe |
| Fuchsia 'Papoose' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of compost feels dry, roughly every 3-5 days in summer | Mildly toxic to pets |
| Fuchsia 'Phyllis' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of compost feels dry, roughly every 4-6 days in summer | Mildly toxic to pets |
| Fuchsia 'Pink Marshmallow' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of compost feel dry, roughly every 5-7 days; more frequently in summer heat | Pet-safe |
| Fuchsia 'Red Spider' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of compost are dry, roughly every 5-7 days in summer | Pet-safe |
| Fuchsia 'Snowcap' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of compost is dry, roughly every 3-5 days in the growing season | Mildly toxic to pets |
| Fuchsia 'Swingtime' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of compost is dry, roughly every 2-3 days in warm weather | Pet-safe |
| Fuchsia 'Thalia' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 3-5 days in warm weather | Pet-safe |
| Fuchsia 'Tom Thumb' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil or compost feels dry, roughly every 5-8 days | Pet-safe |
| Fuchsia 'Voodoo' | Bright indirect light (just back from a sunny window) | When the top 2 cm of compost are dry, roughly every 5-7 days in summer | Pet-safe |
| Fuchsia 'Winston Churchill' | Bright indirect light (just back from a sunny window) | When the top 2 cm of compost are dry, roughly every 6-8 days | Pet-safe |
| Fuchsia magellanica | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 3-5 days in summer heat | Pet-safe |
| Fujian Cypress | Bright indirect light (just back from a sunny window) | Once or twice a week during the growing season; reduce in winter | Mildly toxic to pets |
| Fukien Tea Bonsai | Bright indirect light (just back from a sunny window) | When the soil surface just begins to dry, often every 1-3 days in warmth | Mildly toxic to pets |
| Full Moon Maple | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly weekly in summer | Pet-safe |
| Galanga Resurrection Lily | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil feels dry, roughly every 5-7 days in the growing season; reduce significantly or cease in winter dormancy | Mildly toxic to pets |
| Gamboge Tree | Bright indirect light (just back from a sunny window) | Water moderately and consistently; do not allow to dry out between waterings. | Mildly toxic to pets |
| Garden Cape Primrose | Bright indirect light (just back from a sunny window) | Every 7-10 days in active growth; reduce to every 3-4 weeks in winter | Pet-safe |
| Garden Phlox | Bright indirect light (just back from a sunny window) | 1-2 times per week during active growth | Mildly toxic to pets |
| Garden's Clivia | Bright indirect light (just back from a sunny window) | Water freely in spring and summer; reduce to minimal in autumn and winter. | Toxic to pets |
| Gardenia | Bright indirect light (just back from a sunny window) | When the top 2-3cm of compost feels dry | Toxic to pets |
| Gardenia 'Frostproof' | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top 2-3 cm of soil dries, about every 4-7 days | Toxic to pets |
| Gardenia 'Kleim's Hardy' | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top 2-3 cm of soil begins to dry, roughly every 4-7 days | Toxic to pets |
| Gardenia 'Radicans' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 4-7 days | Toxic to pets |
| Gardenia 'Veitchii' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 4-7 days | Toxic to pets |
| Gargoyle Lepanthes | Medium indirect light (a couple of metres from a window) | Every 1–2 days; medium should be moist but not sodden | Pet-safe |
| Garlic Vine | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; reduce in winter | Mildly toxic to pets |
| Gasteria (Ox Tongue) | Bright indirect light (just back from a sunny window) | Every 2-3 weeks in spring/summer; roughly monthly or less in autumn/winter | Mildly toxic to pets |
| Gasteria Acinacifolia | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Gasteria Armstrongii | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Gasteria Batesiana | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Gasteria Glomerata | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Gasteria Nitida | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Gasteria Obliqua | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Gasteria Pillansii | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 3 weeks in growth | Pet-safe |
| Gasteria Pulchra | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Gasteria Rawlinsonii | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Gay's Pondweed | Bright indirect light (just back from a sunny window) | Permanently submerged aquatic plant | Pet-safe |
| Geisha Girl flowering quince | Bright indirect light (just back from a sunny window) | Weekly during establishment; occasional supplemental watering once established | Mildly toxic to pets |
| Geneva Bugle | Bright indirect light (just back from a sunny window) | Once weekly during establishment; every 10–14 days once established | Mildly toxic to pets |
| Gentian Speedwell | Bright indirect light (just back from a sunny window) | Once a week in dry conditions; the plant tolerates moderate drought once established | Pet-safe |
| Geogenanthus ciliatus (Geo Plant) | Bright indirect light (just back from a sunny window) | Roughly 1-2 times per week; keep evenly moist | Mildly toxic to pets |
| Geogenanthus Undatus | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, roughly every 5-7 days | Mildly toxic to pets |
| Geranium × oxonianum 'Wargrave Pink' | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry; roughly weekly, more in heat | Mildly toxic to pets |
| Geranium cantabrigiense 'Cambridge' | Bright indirect light (just back from a sunny window) | Water deeply during the first season; established plants need watering only in prolonged drought | Mildly toxic to pets |
| Geranium endressii | Bright indirect light (just back from a sunny window) | Water through establishment; afterwards in dry spells only | Mildly toxic to pets |
| Geranium macrorrhizum | Medium indirect light (a couple of metres from a window) | Water to establish; afterwards only in extended drought, roughly every 1-2 weeks if very dry | Pet-safe |
| Geranium macrorrhizum 'Bevan's Variety' | Medium indirect light (a couple of metres from a window) | When the top 4-5 cm of soil is dry; weekly to establish, seldom afterwards | Mildly toxic to pets |
| Geranium macrorrhizum 'Spessart' | Bright indirect light (just back from a sunny window) | Water deeply when top 5 cm of soil is dry; established plants need little to no supplemental water | Mildly toxic to pets |
| Geranium maculatum | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water deeply when the top 3-4 cm dries, roughly weekly in the growing season | Mildly toxic to pets |
| Geranium maculatum 'Elizabeth Ann' | Bright indirect light (just back from a sunny window) | Keep evenly moist; water deeply when the top 3-4 cm dries, about weekly during the growing season | Mildly toxic to pets |
| Geranium phaeum | Medium indirect light (a couple of metres from a window) | Water when top 3-5 cm of soil is dry; keep evenly moist in its first season | Mildly toxic to pets |
| Geranium phaeum 'Album' | Medium indirect light (a couple of metres from a window) | Water when top 3-5 cm of soil is dry; keep evenly moist while establishing | Mildly toxic to pets |
| Geranium phaeum 'Lily Lovell' | Medium indirect light (a couple of metres from a window) | Water when top 3-5 cm of soil is dry; keep evenly moist while establishing | Mildly toxic to pets |
| Geranium phaeum 'Samobor' | Medium indirect light (a couple of metres from a window) | Water when top 3-5 cm of soil is dry; keep evenly moist while establishing | Mildly toxic to pets |
| Geranium sylvaticum | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist; water deeply when the top 3-4 cm dries, roughly weekly in growing season | Mildly toxic to pets |
| Geranium sylvaticum 'Mayflower' | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water deeply when the top 3-4 cm dries, about weekly through the growing season | Mildly toxic to pets |
| Geranium wallichianum 'Buxton's Variety' | Bright indirect light (just back from a sunny window) | Water during establishment, then keep just-moist through summer; little needed in winter dormancy | Mildly toxic to pets |
| Geranium wallichianum 'Syabru' | Bright indirect light (just back from a sunny window) | Water during establishment, then keep evenly moist through the growing season | Mildly toxic to pets |
| Geranium x oxonianum | Bright indirect light (just back from a sunny window) | Water through the first season; thereafter only during sustained dry spells | Mildly toxic to pets |
| Geranium x oxonianum 'A.T. Johnson' | Bright indirect light (just back from a sunny window) | Water through establishment; thereafter only in prolonged dry spells | Mildly toxic to pets |
| Geranium x oxonianum 'Claridge Druce' | Bright indirect light (just back from a sunny window) | Water during the first season; afterwards only in extended drought | Mildly toxic to pets |
| Geranium x oxonianum 'Wargrave Pink' | Bright indirect light (just back from a sunny window) | Water during establishment; afterwards only in extended drought | Mildly toxic to pets |
| Gerbera Daisy | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (1 in) of soil is dry, roughly 1-2 times per week in active growth | Pet-safe |
| German Empress Orchid Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm is dry, roughly every 7-10 days in growth | Pet-safe |
| Germander Speedwell | Medium indirect light (a couple of metres from a window) | Moderate — keep soil consistently moist, especially in summer | Pet-safe |
| Germinyan's Angraecum | Bright indirect light (just back from a sunny window) | Every 4–6 days year-round; slight reduction in cooler months | Pet-safe |
| Ghost Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil starts to dry, often every 4-7 days | Mildly toxic to pets |
| Ghost Fern | Medium indirect light (a couple of metres from a window) | 2–3 times per week in growing season, reduce in winter | Pet-safe |
| Giant Bellflower | Medium indirect light (a couple of metres from a window) | Regularly — keep soil consistently moist throughout the growing season | Pet-safe |
| Giant Bucephalandra | Medium indirect light (a couple of metres from a window) | Keep substrate consistently moist (emersed) or fully submerged (aquatic); do not allow to dry out | Toxic to pets |
| Giant Chain Fern | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil begins to dry, roughly every 5-8 days in summer | Pet-safe |
| Giant Chin Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-14 days in summer; every 4-6 weeks in winter | Pet-safe |
| Giant Cymbidium | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; reduce in winter rest | Pet-safe |
| Giant Dioon | Bright indirect light (just back from a sunny window) | Every 1–2 weeks in summer; every 3–4 weeks in winter | Toxic to pets |
| Giant Dogwood | Bright indirect light (just back from a sunny window) | Weekly deep watering for young trees; deep watering in droughts for mature specimens | Pet-safe |
| Giant Dutchman's pipe | Bright indirect light (just back from a sunny window) | Every 5–7 days; keep soil evenly moist but not saturated. | Toxic to pets |
| Giant Fishtail Palm | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, often every 5-7 days in active growth | Toxic to pets |
| Giant Hard Fern | Medium indirect light (a couple of metres from a window) | 2-3 times per week in growing season; reduce in winter | Pet-safe |
| Giant Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 3–4 days in active growth; every 5–7 days in winter | Pet-safe |
| Giant Mondo Grass | Bright indirect light (just back from a sunny window) | Water when the top 2–3 cm of soil is dry, approximately every 7–10 days in the growing season | Mildly toxic to pets |
| Giant Phragmipedium | Bright indirect light (just back from a sunny window) | Keep consistently moist — water when the surface of the medium is barely dry | Pet-safe |
| Giant Plume Ginger | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days during active growth | Mildly toxic to pets |
| Giant Snowdrop | Bright indirect light (just back from a sunny window) | Regular moisture during growth; tolerates drier summer dormancy than G. nivalis | Toxic to pets |
| Giant Snowflake Bacopa | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of potting mix feels dry, roughly every 3-5 days in warm weather | Pet-safe |
| Giant South American Bamboo | Bright indirect light (just back from a sunny window) | Weekly to twice weekly during active growth; reduce in winter | Pet-safe |
| Giant Spider Lily | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in the growing season | Toxic to pets |
| Giant Staghorn Fern | Bright indirect light (just back from a sunny window) | Soak when the mount or root mass is approaching dry, roughly every 7-14 days | Pet-safe |
| Giant Taro | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top 2-3 cm is dry, often every 4-7 days | Toxic to pets |
| Giant Trillium | Medium indirect light (a couple of metres from a window) | Consistently moist spring through early summer; tolerates drier conditions once fully summer-dormant. | Mildly toxic to pets |
| Giant Typhonium | Medium indirect light (a couple of metres from a window) | Regularly during the growing season; reduce through autumn and winter | Toxic to pets |
| Giant Vriesea | Bright indirect light (just back from a sunny window) | Flush cup weekly; water medium every 2 weeks | Pet-safe |
| Giant Wart Fern | Medium indirect light (a couple of metres from a window) | Every 5–7 days in active growth; reduce in cooler months | Pet-safe |
| Giant Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer, every 3–4 weeks in winter | Pet-safe |
| Giant White Bird of Paradise | Bright indirect light (just back from a sunny window) | When the top 5–7 cm of soil feel dry; approximately every 7–14 days in summer, less in winter | Toxic to pets |
| Giant White Bird of Paradise | Bright indirect light (just back from a sunny window) | When the top 4-5 cm of soil is dry, roughly every 7-14 days | Mildly toxic to pets |
| Giant Wild Pine | Bright indirect light (just back from a sunny window) | Weekly soak or twice-weekly misting | Pet-safe |
| Gibbaeum album | Bright indirect light (just back from a sunny window) | Lightly in autumn through spring during growth; keep nearly dry in summer | Mildly toxic to pets |
| Gilbert Peacock Ginger | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, roughly every 7-10 days in active growth | Mildly toxic to pets |
| Ginseng Ficus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, often every 4-7 days in the small bonsai pot | Toxic to pets |
| Gireoud's Brassia | Bright indirect light (just back from a sunny window) | Every 3–4 days during active growth; reduce to weekly or less in cooler months | Pet-safe |
| Gladiolus-Flowered Werauhia | Bright indirect light (just back from a sunny window) | Refill the central tank weekly; water the growing medium every 1-2 weeks | Pet-safe |
| Glandular Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep medium consistently moist; water every 2–4 days | Mildly toxic to pets |
| Glandular-stemmed Monanthes | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring and summer; monthly in winter | Mildly toxic to pets |
| Glaucous Sedge | Medium indirect light (a couple of metres from a window) | Low to moderate — drought-tolerant when established | Pet-safe |
| Glaziou's Fuchsia | Bright indirect light (just back from a sunny window) | Water freely in growth; reduce in winter | Pet-safe |
| Globe-Flowered Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer, every 3–5 weeks in winter | Pet-safe |
| Glorious Columnea | Bright indirect light (just back from a sunny window) | When top 2–3 cm of mix dries | Pet-safe |
| Glory Bower | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Glory of the Snow | Bright indirect light (just back from a sunny window) | Low; relies on natural rainfall in most temperate gardens | Mildly toxic to pets |
| Glossostigma elatinoides | Bright indirect light (just back from a sunny window) | Fully submerged; 30-50% aquarium water change weekly | Mildly toxic to pets |
| Gloxinia perennis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Gloxinia sylvatica | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Goeppertia Beauty Star | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Goeppertia Bella (Calathea bella) | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Goeppertia Flamestar | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Goeppertia majestica | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, typically every 5-7 days | Pet-safe |
| Goeppertia majestica 'Whitestar' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, typically every 5-7 days | Pet-safe |
| Goeppertia Medallion | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Goeppertia Orbifolia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Goeppertia Pluriplicata | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Goeppertia Roseopicta Illustris | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Goeppertia Setosa | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Goeppertia White Fusion | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Gold Charm Holiday Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| Gold Dew Tufted Hair Grass | Bright indirect light (just back from a sunny window) | Moderate to frequent — prefers consistently moist soil | Pet-safe |
| Gold Dust Dracaena | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Gold Heart Bleeding Heart | Medium indirect light (a couple of metres from a window) | Weekly during the growing season, reducing as foliage dies back in summer | Toxic to pets |
| Golden Alexanders | Bright indirect light (just back from a sunny window) | Weekly or as needed to keep soil moist | Pet-safe |
| Golden Arch Dendrobium | Bright indirect light (just back from a sunny window) | Every 5-7 days in active growth; reduce to every 3-4 weeks in winter | Pet-safe |
| Golden Bow Dendrobium | Bright indirect light (just back from a sunny window) | Plentiful in warm summer growth; markedly reduced and near-dry over a cool winter rest | Pet-safe |
| Golden Columbine | Bright indirect light (just back from a sunny window) | Once or twice a week during active growth; drought-tolerant once established | Toxic to pets |
| Golden Corkscrew Plant | Bright indirect light (just back from a sunny window) | Keep medium permanently saturated; tray method with 1–2 cm standing water | Pet-safe |
| Golden Creeping Jenny | Bright indirect light (just back from a sunny window) | Every 3–7 days; keep consistently moist; will tolerate standing water as a pond marginal | Mildly toxic to pets |
| Golden Dragon | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Toxic to pets |
| Golden Hakone Grass | Medium indirect light (a couple of metres from a window) | Weekly, or whenever the top 2–3 cm of soil dry out | Mildly toxic to pets |
| Golden Japanese Sweet Flag | Bright indirect light (just back from a sunny window) | Keep the soil constantly moist to wet; water as soon as the surface begins to dry, often every 2-4 days | Mildly toxic to pets |
| Golden Japanese Sweet Flag | Medium indirect light (a couple of metres from a window) | Keep constantly moist; tolerate standing water | Pet-safe |
| Golden Male Fern | Medium indirect light (a couple of metres from a window) | Weekly during the growing season; reduce in winter but do not allow to dry out completely | Mildly toxic to pets |
| Golden Mosaic Ctenanthe | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (about an inch) of soil feels dry, roughly weekly in summer and less in winter | Mildly toxic to pets |
| golden mosaic plant | Medium indirect light (a couple of metres from a window) | Every 5–7 days in growing season; every 10–14 days in winter | Pet-safe |
| Golden Polypody | Bright indirect light (just back from a sunny window) | Every 5–7 days in spring and summer; every 10–14 days in autumn and winter | Pet-safe |
| Golden Polypody 'Davana' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Golden Polypody Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil feels dry, roughly every 7-10 days in summer | Pet-safe |
| Golden pothos | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Golden Rat Tail Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in summer and every 3-4 weeks in winter | Pet-safe |
| Golden Spreader Nordmann Fir | Bright indirect light (just back from a sunny window) | Regularly; maintain moist but not wet soil | Mildly toxic to pets |
| Golden Tree Fern | Bright indirect light (just back from a sunny window) | 2-3 times per week; trunk must stay moist | Pet-safe |
| Golden Tree Fern | Bright indirect light (just back from a sunny window) | Keep consistently moist; water when the top 3-5 cm of soil feels dry or when trunk feels dry to the touch, roughly every 3-7 days in summer | Pet-safe |
| Golden-Edged Cymbidium | Bright indirect light (just back from a sunny window) | Keep evenly moist in growth, about every 5-7 days, drier in winter | Pet-safe |
| Golden-Flowered Ginger | Bright indirect light (just back from a sunny window) | Keep evenly moist during the growing season; reduce after die-back. | Mildly toxic to pets |
| Golden-Hair Bamboo | Bright indirect light (just back from a sunny window) | Twice per week in growing season; once per week or less in winter | Pet-safe |
| Golden-Net Plant | Medium indirect light (a couple of metres from a window) | Every 5–7 days in growing season; every 7–10 days in winter | Pet-safe |
| Golden-spike Disa | Bright indirect light (just back from a sunny window) | Keep consistently moist throughout the year, roughly every 2-4 days | Pet-safe |
| Goldencup St. John's Wort | Bright indirect light (just back from a sunny window) | Once or twice weekly when young; every 1–2 weeks once established | Mildly toxic to pets |
| Goldfish Plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 7-10 days in growth | Pet-safe |
| Goldfussia | Bright indirect light (just back from a sunny window) | 2–3 times weekly in spring and summer; reduce slightly in winter | Mildly toxic to pets |
| Goldtau Hair Grass | Medium indirect light (a couple of metres from a window) | Every 5-10 days; keep consistently moist | Pet-safe |
| Goldtau Tufted Hair Grass | Bright indirect light (just back from a sunny window) | Keep evenly moist, watering deeply 1-2 times weekly when dry | Mildly toxic to pets |
| Gollum Jade | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is fully dry, roughly every 2-3 weeks; less in winter | Toxic to pets |
| Gonatopus boivinii | Bright indirect light (just back from a sunny window) | Water when the top 2-3 cm dries during growth; keep dry through dormancy | Mildly toxic to pets |
| Gongora galeata | Bright indirect light (just back from a sunny window) | When the medium nears dryness in growth; sparingly during winter rest | Mildly toxic to pets |
| Gongora quinquenervis | Bright indirect light (just back from a sunny window) | When the medium approaches dryness, often every 2-4 days in growth | Mildly toxic to pets |
| Good Luck Plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days during active growth | Mildly toxic to pets |
| Gooseneck Loosestrife | Medium indirect light (a couple of metres from a window) | Regularly; moist soil preferred | Mildly toxic to pets |
| Gourd-leaf Begonia | Medium indirect light (a couple of metres from a window) | Every 6–9 days in spring and summer; every 12–16 days in winter | Toxic to pets |
| Gout Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; sparingly (every 3–4 weeks) in winter | Toxic to pets |
| Graceful Cautleya | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry during active growth, approximately every 7-10 days; minimal in winter dormancy | Mildly toxic to pets |
| Graceful Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 2–3 days in summer; every 4–5 days in winter | Pet-safe |
| Grand Cape Primrose | Bright indirect light (just back from a sunny window) | Every 7-14 days in growth; monthly in winter | Pet-safe |
| Grape Ivy | Bright indirect light (just back from a sunny window) | When the top 1 inch (2.5 cm) of soil is dry | Pet-safe |
| Grape-leaved Anemone 'Robustissima' | Bright indirect light (just back from a sunny window) | When the top 4-5 cm of soil is dry, roughly every 7-14 days | Toxic to pets |
| Grape-leaved passionflower | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth | Mildly toxic to pets |
| Grape-Vine Begonia | Bright indirect light (just back from a sunny window) | Every 6–9 days in growing season; every 10–14 days in winter | Toxic to pets |
| Graptopetalum bellum | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 12-16 days in growth, very little in winter | Pet-safe |
| Graptophyllum pictum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in warm growth | Mildly toxic to pets |
| Grass-leaf Disa | Bright indirect light (just back from a sunny window) | Keep consistently moist year-round, roughly every 2-3 days in summer | Pet-safe |
| Grasshopper Lycaste | Bright indirect light (just back from a sunny window) | Every 5–7 days in growth; near-dry rest in winter | Pet-safe |
| Gray's sedge | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; water every 2–4 days in dry weather | Pet-safe |
| Great Expectations Hosta | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Great Masterwort | Medium indirect light (a couple of metres from a window) | Regularly — keep soil evenly moist throughout the growing season | Mildly toxic to pets |
| Great White Trillium | Medium indirect light (a couple of metres from a window) | Consistently moist in spring; reduce after summer dormancy | Mildly toxic to pets |
| Great Wood Rush | Medium indirect light (a couple of metres from a window) | Low to moderate; established plants rarely need supplemental watering in temperate climates | Pet-safe |
| Greater Coreopsis | Bright indirect light (just back from a sunny window) | Low to moderate; drought-tolerant once established | Pet-safe |
| Greater Fringed Gentian | Bright indirect light (just back from a sunny window) | Regular — consistently moist | Pet-safe |
| Greater Periwinkle | Medium indirect light (a couple of metres from a window) | Every 5–7 days during active growth; every 10–14 days once established | Toxic to pets |
| Greater Sea Kale | Bright indirect light (just back from a sunny window) | Moderate — water regularly while establishing, then during dry spells | Mildly toxic to pets |
| Greater Stitchwort | Medium indirect light (a couple of metres from a window) | Moderate; keep soil evenly moist during spring and summer | Mildly toxic to pets |
| Grecian Windflower | Bright indirect light (just back from a sunny window) | Moderate in spring, dry during summer dormancy | Toxic to pets |
| Greek Cyclamen | Bright indirect light (just back from a sunny window) | Dry in summer dormancy; moderate during autumn and winter growth | Toxic to pets |
| Greek Jancaea | Medium indirect light (a couple of metres from a window) | Little and often to keep root zone moist; almost dry during winter dormancy | Pet-safe |
| Green Cabomba | Bright indirect light (just back from a sunny window) | Fully submerged aquatic; maintain in aquarium water continuously | Pet-safe |
| Green Cliff Brake Fern | Medium indirect light (a couple of metres from a window) | When the top half of the soil is dry, roughly every 7-10 days in summer and every 14 days in winter | Pet-safe |
| Green Comet Milkweed | Bright indirect light (just back from a sunny window) | Low; highly drought-tolerant once established | Toxic to pets |
| Green Dragon | Medium indirect light (a couple of metres from a window) | Regularly during spring and summer growing season | Toxic to pets |
| Green Gem Boxwood | Medium indirect light (a couple of metres from a window) | When the top 5 cm of soil is dry, about weekly while establishing | Toxic to pets |
| Green Moor Grass | Medium indirect light (a couple of metres from a window) | Every 1–2 weeks during establishment; largely self-sufficient once established | Pet-safe |
| Green Panda Bamboo | Bright indirect light (just back from a sunny window) | Twice weekly during establishment and dry spells; weekly once established | Pet-safe |
| Green Prayer Plant | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days in growth | Pet-safe |
| Green Rock Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is completely dry, roughly every 10-14 days | Pet-safe |
| Green Rotala | Bright indirect light (just back from a sunny window) | Fully submerged; 20-30% water change weekly | Mildly toxic to pets |
| Green Snowdrop | Bright indirect light (just back from a sunny window) | Relies on natural rainfall during the growing season; keep moist during autumn planting and winter–spring growth | Toxic to pets |
| Green Spleenwort | Medium indirect light (a couple of metres from a window) | When the top centimetre of soil dries out | Pet-safe |
| Green Velvet Boxwood | Medium indirect light (a couple of metres from a window) | When the top 5 cm of soil is dry, about weekly while establishing | Toxic to pets |
| Green-flowered Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–12 days in the growing season; every 2–3 weeks in winter | Pet-safe |
| Green-spotted Billbergia | Bright indirect light (just back from a sunny window) | Keep central cup lightly filled; water substrate every 1-2 weeks | Pet-safe |
| Green-Spotted Neoregelia | Bright indirect light (just back from a sunny window) | Refresh central cup every 5–7 days; soil every 2–3 weeks | Pet-safe |
| Green-tip Forest Lily | Bright indirect light (just back from a sunny window) | Water moderately in spring and summer; reduce to barely moist in autumn and winter. | Toxic to pets |
| Green-Yellow Catasetum | Bright indirect light (just back from a sunny window) | Once or twice weekly during active growth; cease completely once leaves drop | Pet-safe |
| Green's Ginger Lily | Bright indirect light (just back from a sunny window) | Keep consistently moist during active growth (spring to autumn); reduce watering in winter dormancy | Pet-safe |
| Greene's Liveforever | Bright indirect light (just back from a sunny window) | Every 2–3 weeks during active growth (autumn–spring); very little to none in summer | Pet-safe |
| Greenish Air Plant | Bright indirect light (just back from a sunny window) | 2–3 times per week (misting) or weekly soak | Pet-safe |
| Grey sedge | Medium indirect light (a couple of metres from a window) | Occasional once established; more frequent in full sun or sandy soil | Pet-safe |
| Griffith's Begonia | Medium indirect light (a couple of metres from a window) | When the top 2–3 cm of compost feel dry | Toxic to pets |
| Grisebach's Sword Plant | Medium indirect light (a couple of metres from a window) | Submerged aquatic — 20-30% weekly water changes keep nutrients and water quality stable. | Toxic to pets |
| Groby's Specklinia | Medium indirect light (a couple of metres from a window) | Every 2–3 days; mounted plants every 1–2 days in warm conditions | Pet-safe |
| Ground Bromeliad | Bright indirect light (just back from a sunny window) | Occasional; drought-tolerant once established | Mildly toxic to pets |
| Gryphon Begonia | Bright indirect light (just back from a sunny window) | When the top 2–3 cm (about 1 inch) of soil dries out | Toxic to pets |
| Guatemalan Air Plant | Bright indirect light (just back from a sunny window) | Mist 2–3 times per week, or soak for 20–30 minutes once a week | Pet-safe |
| Guatemalan Blue Sage | Medium indirect light (a couple of metres from a window) | Every 5-7 days during the growing season | Pet-safe |
| Guatemalan Ponytail Palm | Bright indirect light (just back from a sunny window) | Every 14–21 days in summer; every 28–42 days in winter | Mildly toxic to pets |
| guelder rose | Bright indirect light (just back from a sunny window) | Weekly when young; every 1–2 weeks once established | Mildly toxic to pets |
| Gum Palm | Bright indirect light (just back from a sunny window) | When the top 4-5 cm of mix is dry, every 8-12 days in growth | Toxic to pets |
| Gunnera manicata | Bright indirect light (just back from a sunny window) | Keep permanently wet; never let the rootzone dry | Mildly toxic to pets |
| Guppy's Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days in active growth; every 3–4 weeks in winter | Pet-safe |
| Guriri Palm | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Gurken's Star Bromeliad | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Guzmania | Bright indirect light (just back from a sunny window) | Keep the central cup filled; water soil weekly | Pet-safe |
| Guzmania 'Empire' | Bright indirect light (just back from a sunny window) | Keep the central cup topped up; flush and refill it every 1-2 weeks, lightly moisten soil | Pet-safe |
| Guzmania 'Exodus' | Medium indirect light (a couple of metres from a window) | Keep the central cup filled; flush and refill every 1-2 weeks | Pet-safe |
| Guzmania 'Orangeade' | Bright indirect light (just back from a sunny window) | Keep the central cup topped up; flush and refill every 1-2 weeks | Pet-safe |
| Guzmania 'Rana' | Bright indirect light (just back from a sunny window) | Keep the central cup topped up; refresh it weekly and water the mix only when nearly dry | Pet-safe |
| Guzmania 'Torch' | Bright indirect light (just back from a sunny window) | Keep the central cup filled; flush and refill it every 1-2 weeks, lightly moisten soil | Pet-safe |
| Guzmania conifera | Bright indirect light (just back from a sunny window) | Keep the central cup filled; refresh weekly and keep the mix barely moist | Pet-safe |
| Guzmania monostachia | Bright indirect light (just back from a sunny window) | Maintain water in the central cup; flush and refill every 1-2 weeks | Pet-safe |
| Guzmania wittmackii | Bright indirect light (just back from a sunny window) | Keep the central cup filled; flush and refill every 1-2 weeks | Pet-safe |
| Gymnocalycium andreae | Bright indirect light (just back from a sunny window) | Soak-and-dry, roughly every 10-14 days in summer; keep dry in winter | Pet-safe |
| Gymnocalycium denudatum | Bright indirect light (just back from a sunny window) | Soak-and-dry, roughly every 10-14 days in summer; keep dry in winter | Pet-safe |
| Gyoku-ryu Mondo Grass | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 4-7 days in growth | Pet-safe |
| Gypsicola Butterwort | Bright indirect light (just back from a sunny window) | Keep damp via a shallow tray during summer growth; water sparingly once the succulent winter rosette forms | Mildly toxic to pets |
| Gypsum Butterwort | Bright indirect light (just back from a sunny window) | Tray-water sparingly in summer; near-dry in winter dormancy | Mildly toxic to pets |
| Hair sedge | Bright indirect light (just back from a sunny window) | Regular watering to maintain even moisture; reduce slightly in winter | Pet-safe |
| Hairy Abutilon | Bright indirect light (just back from a sunny window) | Regularly; keep soil evenly moist in growth | Mildly toxic to pets |
| Hairy Aichryson | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in spring and summer; once monthly or less in winter | Mildly toxic to pets |
| Hairy Alpine Primrose | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; minimal in summer and winter | Mildly toxic to pets |
| Hairy alumroot | Medium indirect light (a couple of metres from a window) | Once or twice per week during active growth; less in winter | Pet-safe |
| Hairy Beardtongue | Bright indirect light (just back from a sunny window) | Every 1–2 weeks once established; more frequent when newly planted | Pet-safe |
| Hairy Bertolonia | Medium indirect light (a couple of metres from a window) | Every 4–6 days; keep evenly moist | Pet-safe |
| Hairy Bladderwort | Bright indirect light (just back from a sunny window) | Keep substrate continuously wet by sitting pot in a shallow tray of 1–2 cm of water at all times | Mildly toxic to pets |
| Hairy Gibbaeum | Bright indirect light (just back from a sunny window) | Every 3–4 weeks in winter and spring (active season); dry in summer | Pet-safe |
| Hairy Ginger Lily | Bright indirect light (just back from a sunny window) | Keep moist throughout active growth; water sparingly in winter | Pet-safe |
| Hairy Hydrangea | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil feels dry, roughly every 5-7 days in summer | Toxic to pets |
| Hairy Kohleria | Bright indirect light (just back from a sunny window) | Every 7–10 days during growth; minimal in dormancy | Pet-safe |
| Hairy Lip Fern | Bright indirect light (just back from a sunny window) | every 2-3 weeks (drought-tolerant once established) | Mildly toxic to pets |
| Hairy Parakohleria | Medium indirect light (a couple of metres from a window) | Every 5–7 days during active growth; reduce to every 10–14 days in cooler months | Pet-safe |
| Hairy Peperomia | Bright indirect light (just back from a sunny window) | Every 2–3 weeks (allow soil to nearly dry between waterings) | Pet-safe |
| Hairy Primrose | Bright indirect light (just back from a sunny window) | Regularly during active growth (spring–autumn); sparingly in winter | Toxic to pets |
| Hairy Raphionacme | Bright indirect light (just back from a sunny window) | Weekly during active growth (spring–summer); virtually none in winter dormancy | Mildly toxic to pets |
| Hairy Sinningia | Bright indirect light (just back from a sunny window) | Weekly during growth; withheld during dormancy | Pet-safe |
| Hairy Slipper Orchid | Medium indirect light (a couple of metres from a window) | Every 5–7 days year-round | Pet-safe |
| Hairy Solomon's Seal | Medium indirect light (a couple of metres from a window) | Regular; keep evenly moist | Mildly toxic to pets |
| Hairy Spiral Ginger | Medium indirect light (a couple of metres from a window) | Frequent — keep soil consistently moist throughout the growing season, reducing slightly in winter. | Mildly toxic to pets |
| Hairy St John's-wort | Medium indirect light (a couple of metres from a window) | Moderate — water when the top 2–3 cm of soil is dry | Toxic to pets |
| Hairy Sun Pitcher | Bright indirect light (just back from a sunny window) | Keep medium consistently moist; use a shallow tray with no more than 1 cm of water | Pet-safe |
| Hairy Violet | Medium indirect light (a couple of metres from a window) | Water moderately; allow the top centimetre of soil to dry between waterings. | Pet-safe |
| Hairy Water Clover | Medium indirect light (a couple of metres from a window) | Permanently in waterlogged substrate or submerged | Mildly toxic to pets |
| Hairy-beard Gastrochilus | Bright indirect light (just back from a sunny window) | Mount: daily root misting; pot: every 3-4 days during growth, every 7-10 days in cooler months | Pet-safe |
| Hairy-Cupped Coelogyne | Bright indirect light (just back from a sunny window) | Every 4–6 days in active growth; every 10–14 days in winter | Pet-safe |
| Hairy-Fruited Wickerware Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in summer; reduce to every 14-21 days in winter | Pet-safe |
| Hairy-Leaf Begonia | Medium indirect light (a couple of metres from a window) | When the top 2 cm of compost feel dry | Toxic to pets |
| Hairy-tongued Restrepia | Medium indirect light (a couple of metres from a window) | Every 2–4 days; medium stays lightly moist | Pet-safe |
| Hakonechloa All Gold | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist; water 1-2 times weekly, more in heat | Mildly toxic to pets |
| Halesia carolina | Bright indirect light (just back from a sunny window) | Weekly while establishing; regular watering in dry spells | Pet-safe |
| Halesia monticola | Bright indirect light (just back from a sunny window) | Weekly while establishing; regular watering in dry spells | Pet-safe |
| Half-hidden Yam | Bright indirect light (just back from a sunny window) | Every 2–3 weeks during the growing season; very sparingly or not at all during dormancy | Mildly toxic to pets |
| Hall Totara | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 10-14 days for young plants | Toxic to pets |
| Hallae's Nephthytis | Medium indirect light (a couple of metres from a window) | Water when the top 2-3 cm of soil dries out, approximately every 7-10 days | Toxic to pets |
| Hamilton's Strobilanthes | Medium indirect light (a couple of metres from a window) | 2–3 times weekly in summer; once weekly in winter | Mildly toxic to pets |
| Hamilton's Sundew | Bright indirect light (just back from a sunny window) | Keep tray with 1–2 cm of water at all times | Pet-safe |
| Hamilton's Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring and summer, every 3–4 weeks in autumn and winter | Pet-safe |
| Hammock Fern | Medium indirect light (a couple of metres from a window) | Every 5–7 days in the growing season, every 10–14 days in winter | Pet-safe |
| Hand Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Hand-Bearing Oncidium | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; every 10–14 days in winter | Pet-safe |
| Hanging Heliconia | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 5-7 days in warm weather | Mildly toxic to pets |
| Happy Bean Peperomia | Bright indirect light (just back from a sunny window) | Every 1-2 weeks | Pet-safe |
| Happy Bean Peperomia | Bright indirect light (just back from a sunny window) | Every 14–21 days in spring/summer; every 4–6 weeks in winter | Pet-safe |
| Happy Wanderer | Bright indirect light (just back from a sunny window) | Low to moderate; drought tolerant once established | Mildly toxic to pets |
| Hard Fern | Medium indirect light (a couple of metres from a window) | 2-3 times per week in growing season; reduce slightly in winter | Pet-safe |
| Hard-leaf Primulina | Bright indirect light (just back from a sunny window) | Every 14–21 days in growing season; every 4 weeks in winter | Mildly toxic to pets |
| Hardy Cyclamen | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry during active growth (autumn-spring); withhold water during summer dormancy | Toxic to pets |
| Hare's Foot Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Hare's Foot Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-9 days | Mildly toxic to pets |
| Harris's Air Plant | Bright indirect light (just back from a sunny window) | Mist thoroughly 2–3 times per week or soak for 20–30 minutes once a week. | Mildly toxic to pets |
| Hart's Tongue Fern | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Hartford Climbing Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth | Pet-safe |
| Hasse's Liveforever | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in the growing season (autumn–spring); virtually none in summer | Pet-safe |
| Hatfieldii Yew | Medium indirect light (a couple of metres from a window) | When the top 5 cm of soil is dry, about weekly while establishing | Toxic to pets |
| Hatiora Salicornioides | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Mildly toxic to pets |
| Hatschbach's Fuchsia | Bright indirect light (just back from a sunny window) | Water freely in growth; keep just moist in winter | Pet-safe |
| Hawaiian Tree Fern | Bright indirect light (just back from a sunny window) | 2-3 times per week in growing season, reduce in winter | Pet-safe |
| Haworthia | Bright indirect light (just back from a sunny window) | When the soil is dry, every 2-3 weeks | Pet-safe |
| Haworthia Bayeri | Bright indirect light (just back from a sunny window) | When soil is fully dry, about every 10-14 days in active growth, minimal in winter | Pet-safe |
| Haworthia cooperi var. truncata | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Pet-safe |
| Haworthia Emelyae | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Haworthia Herbacea | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Haworthia Lockwoodii | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Haworthia Magnifica | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Haworthia Mucronata | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Haworthia Obtusa | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 1-2 weeks in growth | Pet-safe |
| Haworthia Pygmaea | Bright indirect light (just back from a sunny window) | When soil is fully dry, about every 10-14 days in active growth, minimal in winter | Pet-safe |
| Haworthia Springbokvlakensis | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Haworthia Tessellata | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Haworthia Turgida | Bright indirect light (just back from a sunny window) | When soil is fully dry, about every 7-12 days in summer, sparse in winter | Pet-safe |
| Haworthia Venosa | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Haworthiopsis Viscosa | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Hay-scented Buckler Fern | Medium indirect light (a couple of metres from a window) | Keep evenly moist year-round | Pet-safe |
| Hay-Scented Fern | Medium indirect light (a couple of metres from a window) | Keep evenly moist while establishing; water when the top 2-3 cm of soil is dry, roughly weekly | Mildly toxic to pets |
| Hayata's Stephania | Bright indirect light (just back from a sunny window) | Every 7–10 days during growing season; withhold in winter dormancy | Toxic to pets |
| Haygarth's Cape Primrose | Bright indirect light (just back from a sunny window) | Every 7-10 days in growth; every 3-4 weeks in winter | Pet-safe |
| Heart Fern | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top of the soil starts to dry | Mildly toxic to pets |
| Heart Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Heart-leaf Fan Palm | Bright indirect light (just back from a sunny window) | When the top 2–3 cm of soil feels dry | Pet-safe |
| Heart-Leaf Krohniana | Bright indirect light (just back from a sunny window) | When the top 1-2 inches (2-5 cm) of mix are dry | Pet-safe |
| Heart-leaf Pleurothallis | Medium indirect light (a couple of metres from a window) | Every 1–2 days; mounted plants may need daily misting | Pet-safe |
| Heart-leaved Blechnum | Medium indirect light (a couple of metres from a window) | Twice a week in summer, once a week in cooler months | Pet-safe |
| Heart-Leaved Curcuma | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days during active growth | Mildly toxic to pets |
| Heart-Lipped Brassavola | Bright indirect light (just back from a sunny window) | Every 4–6 days in active growth; reduce to every 7–10 days in cooler months | Pet-safe |
| Heartleaf Bergenia | Medium indirect light (a couple of metres from a window) | Every 7–10 days in the growing season; reduce significantly in winter | Pet-safe |
| Heartleaf Foamflower | Medium indirect light (a couple of metres from a window) | Regular; keep consistently moist | Pet-safe |
| Heartleaf Golden Alexanders | Bright indirect light (just back from a sunny window) | Every 1–2 weeks once established; more frequently in the first season | Pet-safe |
| Heartleaf Hornbeam | Medium indirect light (a couple of metres from a window) | Moderate; water regularly when young; maintain consistent moisture | Pet-safe |
| Heartleaf philodendron | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Heath Speedwell | Bright indirect light (just back from a sunny window) | Low to moderate — allow soil to partially dry between waterings | Pet-safe |
| Heath Spotted Orchid | Bright indirect light (just back from a sunny window) | Consistent moisture from rainfall | Mildly toxic to pets |
| Heath-Leaf Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Heavy Begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost feels dry, roughly every 7-10 days in growth | Toxic to pets |
| Hedera canariensis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Hedera colchica | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 6-8 days in growth | Toxic to pets |
| Hedera colchica 'Dentata Variegata' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 6-8 days in growth | Toxic to pets |
| Hedera helix 'Glacier' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Hedera helix 'Goldheart' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Hedera helix 'Ivalace' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Hedge Bamboo | Bright indirect light (just back from a sunny window) | 2-3 times per week; daily in summer heat or in containers | Pet-safe |
| Hedge Bedstraw | Bright indirect light (just back from a sunny window) | Low to moderate — rainfall usually sufficient | Mildly toxic to pets |
| Hedge Woundwort | Medium indirect light (a couple of metres from a window) | Regularly during active growth; reduce in winter | Mildly toxic to pets |
| Hedgehog Cactus | Bright indirect light (just back from a sunny window) | When the soil is dry, roughly every 1-2 weeks in summer; keep dry in winter | Pet-safe |
| Hedgehog-Lip Bulbophyllum | Medium indirect light (a couple of metres from a window) | Every 3–5 days; mounted plants may need daily misting | Pet-safe |
| Hedgerow Cranesbill | Bright indirect light (just back from a sunny window) | Low to moderate; water only to establish, then drought-tolerant | Pet-safe |
| Heliamphora ionasi | Bright indirect light (just back from a sunny window) | Keep permanently moist to wet; never allow the medium to dry | Mildly toxic to pets |
| Heliamphora minor | Bright indirect light (just back from a sunny window) | Keep permanently moist to wet; mist or top up pitchers regularly | Mildly toxic to pets |
| Heliamphora pulchella | Bright indirect light (just back from a sunny window) | Keep the mix wet to lightly standing; water frequently with rain/distilled/RO water | Mildly toxic to pets |
| Heliamphora tatei | Bright indirect light (just back from a sunny window) | Keep permanently moist to wet; do not let the medium dry | Mildly toxic to pets |
| Hellebore | Medium indirect light (a couple of metres from a window) | Weekly watering until established | Toxic to pets |
| Hellebore 'Penny's Pink' | Medium indirect light (a couple of metres from a window) | Keep evenly moist during establishment and dry spells; established clumps are moderately drought-tolerant | Toxic to pets |
| Helleborus × hybridus | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry; roughly weekly in the first year, then only in dry spells once established | Toxic to pets |
| Helleborus foetidus | Medium indirect light (a couple of metres from a window) | When the top few centimetres of soil dry out; weekly while establishing, then rarely once settled | Toxic to pets |
| Helleborus orientalis 'Ivory Prince' | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry; weekly while establishing, then during dry spells | Toxic to pets |
| Helmet-Shaped Gongora | Bright indirect light (just back from a sunny window) | Every 4–6 days when actively growing; reduce to every 10–14 days in winter | Pet-safe |
| Hemianthus micranthemoides | Bright indirect light (just back from a sunny window) | Permanently submerged; 30-50% water change weekly | Mildly toxic to pets |
| Hemiboea subcapitata | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Mildly toxic to pets |
| Hemigraphis alternata | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 3-5 days in warm growth | Pet-safe |
| Hemisphere Torch Ginger | Bright indirect light (just back from a sunny window) | 2–3 times per week | Mildly toxic to pets |
| Hemisphere Torch Ginger | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, roughly every 5-7 days in the growing season; reduce to every 10-14 days during cooler months | Mildly toxic to pets |
| Hen-and-Chickens Sundew | Medium indirect light (a couple of metres from a window) | Continuously in a tray of 1–2 cm pure water; never allow to dry out. | Pet-safe |
| Heneken's Tolumnia | Bright indirect light (just back from a sunny window) | When the roots appear silvery-white and the fan base is dry, roughly every 4-7 days | Pet-safe |
| Henry's honeysuckle | Medium indirect light (a couple of metres from a window) | Weekly during dry periods; established plants are relatively drought-tolerant | Mildly toxic to pets |
| Henry's Lily | Medium indirect light (a couple of metres from a window) | When top 3–4 cm of soil feels dry | Toxic to pets |
| Henry's Lily | Bright indirect light (just back from a sunny window) | Regular during growth, approximately every 7–10 days in dry weather; reduce after dormancy | Toxic to pets |
| Henry's Lime | Bright indirect light (just back from a sunny window) | Weekly during establishment; deep watering every 2–3 weeks in dry periods | Pet-safe |
| Herb Robert | Medium indirect light (a couple of metres from a window) | Low to moderate; water only during prolonged dry spells | Pet-safe |
| Hermann's Pride Yellow Archangel | Medium indirect light (a couple of metres from a window) | Every 7–14 days during the growing season; reduce in winter | Mildly toxic to pets |
| Hermit Primulina | Medium indirect light (a couple of metres from a window) | Allow the top half of the compost to dry between waterings | Mildly toxic to pets |
| Hernandez-Leaf Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring and summer; every 3–4 weeks in autumn and winter | Pet-safe |
| Hernando Begonia | Medium indirect light (a couple of metres from a window) | When the top 2 cm of compost feel dry | Toxic to pets |
| Herradura Masdevallia | Medium indirect light (a couple of metres from a window) | 3–5 times per week | Pet-safe |
| Heterodox Sun Pitcher | Bright indirect light (just back from a sunny window) | Keep substrate evenly moist at all times | Mildly toxic to pets |
| Heterodoxa Sun Pitcher | Bright indirect light (just back from a sunny window) | Water every 3-5 days, maintaining a consistently moist but not waterlogged substrate; keep pitchers partially filled with distilled or rainwater | Pet-safe |
| Heuchera 'Amber Waves' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 6-10 days in the growing season | Mildly toxic to pets |
| Heuchera 'Berry Smoothie' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days during active growth | Mildly toxic to pets |
| Heuchera 'Carnival Rose Granita' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Mildly toxic to pets |
| Heuchera 'Citronelle' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days during the growing season | Mildly toxic to pets |
| Heuchera 'Dolce Blackcurrant' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 6-9 days in the growing season | Mildly toxic to pets |
| Heuchera 'Dolce Cinnamon Curls' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days during active growth | Mildly toxic to pets |
| Heuchera 'Fire Alarm' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days in the growing season | Mildly toxic to pets |
| Heuchera 'Galaxy' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 6-9 days during growth | Mildly toxic to pets |
| Heuchera 'Georgia Peach' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days during active growth | Mildly toxic to pets |
| Heuchera 'Grape Expectations' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 6-9 days during the growing season | Mildly toxic to pets |
| Heuchera 'Green Spice' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Heuchera 'Hollywood' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Heuchera 'Key Lime Pie' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Heuchera 'Lime Marmalade' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in the growing season | Mildly toxic to pets |
| Heuchera 'Mahogany' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Heuchera 'Marmalade' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Mildly toxic to pets |
| Heuchera 'Midnight Rose' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Heuchera 'Miracle' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Heuchera 'Mocha' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Heuchera 'Northern Exposure Amber' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Heuchera 'Peach Flambe' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Heuchera 'Pewter Moon' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Heuchera 'Plum Pudding' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 6-9 days in summer | Mildly toxic to pets |
| Heuchera 'Purple Petticoats' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Heuchera 'Quicksilver' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Heuchera 'Raspberry Ice' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Heuchera 'Rave On' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Heuchera 'Saturn' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Heuchera 'Silver Scrolls' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Heuchera 'Sparkling Burgundy' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Heuchera 'Sugar Berry' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Heuchera 'Tiramisu' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days during growth | Mildly toxic to pets |
| Heuchera 'Venus' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Heuchera villosa 'Autumn Bride' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Pet-safe |
| Heucherella 'Tapestry' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, about every 5-7 days in summer | Pet-safe |
| Heucherella Brass Lantern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in the growing season | Pet-safe |
| Heucherella Stoplight | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water deeply once or twice a week in dry spells | Pet-safe |
| Heucherella Sunrise Falls | Medium indirect light (a couple of metres from a window) | Keep evenly moist; in containers and baskets water more often, even daily in summer heat | Pet-safe |
| Heucherella Sweet Tea | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water deeply once or twice a week in dry weather | Pet-safe |
| Hiba Arborvitae | Bright indirect light (just back from a sunny window) | Every 5–10 days; never allow soil to dry out completely | Mildly toxic to pets |
| Hicksii Yew | Medium indirect light (a couple of metres from a window) | Every 7-10 days while establishing, then as needed | Toxic to pets |
| Highland Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep the media lightly moist at all times; water roughly every 2-4 days indoors, never letting it dry out fully. | Mildly toxic to pets |
| Hilde's Air Plant | Bright indirect light (just back from a sunny window) | Daily misting in warm weather; 2–3 times per week in winter. | Mildly toxic to pets |
| Hildebrands Basket Vine | Bright indirect light (just back from a sunny window) | Water when the top 2 cm of the potting mix has dried out, roughly every 5–8 days in summer | Pet-safe |
| Hildebrandt Ravenea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Hill Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Hillii Staghorn Fern | Bright indirect light (just back from a sunny window) | Soak when the mount is nearly dry, roughly weekly in summer and every 2-3 weeks in winter | Pet-safe |
| Himalayan Cassiope | Medium indirect light (a couple of metres from a window) | Keep consistently moist; water before the top 2 cm of growing medium dries out. | Mildly toxic to pets |
| Himalayan Inula | Bright indirect light (just back from a sunny window) | 2-3 times per week; maintain consistent moisture | Pet-safe |
| Himalayan pieris | Bright indirect light (just back from a sunny window) | Regular; keep consistently moist | Toxic to pets |
| Himalayan Pieris Wakehurst | Bright indirect light (just back from a sunny window) | Water every 7–10 days; do not allow to dry out, particularly during spring growth flush | Toxic to pets |
| Himalayan Yew | Medium indirect light (a couple of metres from a window) | Weekly during establishment; every 1–2 weeks once established | Toxic to pets |
| Hindu rope plant | Bright indirect light (just back from a sunny window) | When the soil is nearly dry, roughly every 10-14 days in growth | Pet-safe |
| Hindu Rope Plant | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of compost is dry, roughly every 10-14 days in summer | Pet-safe |
| Hindu Rope Plant | Bright indirect light (just back from a sunny window) | When the mix is mostly dry, every 10-14 days or longer | Pet-safe |
| Hirsute Slipper Orchid | Medium indirect light (a couple of metres from a window) | Every 4–5 days in growth; occasional misting only during 30–40 day winter rest | Pet-safe |
| Hirta Toad Lily | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water when the surface begins to dry, typically once or twice a week in summer | Mildly toxic to pets |
| Hirtz's Dragon Orchid | Medium indirect light (a couple of metres from a window) | Daily to every other day; the medium must remain damp throughout | Pet-safe |
| Hirtz's Lepanthes | Medium indirect light (a couple of metres from a window) | Daily misting; never allow roots to fully dry | Pet-safe |
| Hobbit Jade | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is fully dry, about every 2-3 weeks; less in winter | Toxic to pets |
| Hogweed | Bright indirect light (just back from a sunny window) | Regular during establishment; drought-tolerant once established | Mildly toxic to pets |
| Hohenbergia stellata | Bright indirect light (just back from a sunny window) | Keep the central tank filled; water the mix when its top 3-4 cm is dry | Pet-safe |
| Hollow-Corolla Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–20 days in summer, very sparingly in winter | Pet-safe |
| Hollow-Rooted Fumewort | Medium indirect light (a couple of metres from a window) | Rainfall-dependent during spring growth; completely dry in summer dormancy | Toxic to pets |
| Holly Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Holly-leaved Naiad | Medium indirect light (a couple of metres from a window) | Fully submerged; 20-25% water change weekly in aquariums | Mildly toxic to pets |
| Holton's Begonia | Bright indirect light (just back from a sunny window) | When the top 2 cm of compost feel dry | Toxic to pets |
| Homalomena 'Emerald Gem' | Medium indirect light (a couple of metres from a window) | When the top 3 cm of soil is dry, roughly every 6-9 days | Toxic to pets |
| Homalomena 'Maggy' (Shield Plant) | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (top inch) of soil is dry | Toxic to pets |
| Homalomena Lindenii | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Homalomena Maggy | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Homalomena Selby | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Homalomena Sp. Selby | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Homalomena wallisii | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Honesty | Medium indirect light (a couple of metres from a window) | Twice weekly in dry spells; keep soil consistently moist | Mildly toxic to pets |
| Honey Garlic | Bright indirect light (just back from a sunny window) | Low; rainfall usually sufficient once established in the UK | Toxic to pets |
| Honeysuckle Fuchsia | Bright indirect light (just back from a sunny window) | Daily in active growth; less in winter | Pet-safe |
| Hooded Dendrobium | Bright indirect light (just back from a sunny window) | Abundant in summer growth; nearly withheld over the deciduous winter rest | Pet-safe |
| Hooded Maxillaria | Medium indirect light (a couple of metres from a window) | Every 5–7 days year-round; slight reduction in winter | Pet-safe |
| Hooded Pleurothallis | Medium indirect light (a couple of metres from a window) | Daily misting or watering; roots must remain evenly moist at all times | Pet-safe |
| Hooker's Anchomanes | Medium indirect light (a couple of metres from a window) | Every 7–10 days during growth; completely dry during dormancy | Toxic to pets |
| Hooker's Ginger Lily | Bright indirect light (just back from a sunny window) | Consistently moist in active growth (spring–autumn); reduce significantly in winter | Pet-safe |
| Hooker's Holly Fern | Medium indirect light (a couple of metres from a window) | Every 7–10 days, less in winter | Pet-safe |
| Hooker's Inula | Bright indirect light (just back from a sunny window) | 2 times per week; tolerates periodic damp conditions | Pet-safe |
| Hooker's Orchid Cactus | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, approximately every 7-14 days in spring and summer; reduce to once every 3-4 weeks in autumn and winter | Pet-safe |
| Hookeri Anthurium | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Hoop Pine | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Hope Philodendron | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Hope's Cycad | Bright indirect light (just back from a sunny window) | Weekly in summer; every 10–14 days in winter | Toxic to pets |
| Horned violet | Bright indirect light (just back from a sunny window) | Every 5–7 days; keep evenly moist | Pet-safe |
| Horsfield's Sauromatum | Bright indirect light (just back from a sunny window) | Moderately moist during active growth; dry dormancy in winter | Toxic to pets |
| Horst's Gymnocalycium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, approximately every 7-10 days in summer; every 3-4 weeks in winter | Pet-safe |
| Horstmann Korean Fir | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Hosta | Medium indirect light (a couple of metres from a window) | Keep evenly moist; roughly weekly in the ground, more often in pots or heat | Toxic to pets |
| Hosta 'August Moon' | Medium indirect light (a couple of metres from a window) | When the top 3 cm of soil is dry, roughly every 6-7 days in summer | Toxic to pets |
| Hosta 'Blue Angel' | Medium indirect light (a couple of metres from a window) | Every 5-7 days during the growing season, or when the top 3-5 cm of soil is drying | Toxic to pets |
| Hosta 'Color Festival' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 6-8 days in summer | Toxic to pets |
| Hosta 'Curly Fries' | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Hosta 'Diamond Tiara' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 6-8 days in summer | Toxic to pets |
| Hosta 'El Nino' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7 days during the growing season | Toxic to pets |
| Hosta 'Elegans' | Medium indirect light (a couple of metres from a window) | Every 5-7 days during the growing season, or when the top 3-5 cm of soil is drying | Toxic to pets |
| Hosta 'Empress Wu' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days during the growing season | Toxic to pets |
| Hosta 'Fire Island' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in the growing season | Toxic to pets |
| Hosta 'First Frost' | Medium indirect light (a couple of metres from a window) | When top 2-3 cm of soil begins to dry, about every 5-7 days, more in heat | Toxic to pets |
| Hosta 'Fortunei Aureomarginata' | Medium indirect light (a couple of metres from a window) | Every 5-7 days during the growing season, or when the top 3-5 cm of soil is drying | Toxic to pets |
| Hosta 'Fragrant Bouquet' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 6-7 days in summer | Toxic to pets |
| Hosta 'Frances Williams' | Medium indirect light (a couple of metres from a window) | Every 5-7 days in the growing season, or when the top 3-5 cm of soil is drying out | Toxic to pets |
| Hosta 'Fun and Games' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 6-8 days in summer | Toxic to pets |
| Hosta 'Golden Tiara' | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Hosta 'Grand Tiara' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 6-8 days in summer | Toxic to pets |
| Hosta 'Great Expectations' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days during the growing season | Toxic to pets |
| Hosta 'Guacamole' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Hosta 'Halcyon' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Hosta 'Invincible' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Hosta 'Island Charm' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Hosta 'June' | Medium indirect light (a couple of metres from a window) | When top 2-3 cm of soil begins to dry, about every 5-7 days, more in heat | Toxic to pets |
| Hosta 'Krossa Regal' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7 days during the growing season | Toxic to pets |
| Hosta 'Lancifolia' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 6-8 days in summer | Toxic to pets |
| Hosta 'Midnight Rider' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 6-8 days in summer | Toxic to pets |
| Hosta 'Night Before Christmas' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Hosta 'On Stage' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Hosta 'Patriot' | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Hosta 'Patriot' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days through the growing season | Toxic to pets |
| Hosta 'Paul Revere' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days during the growing season | Toxic to pets |
| Hosta 'Pineapple Upside Down Cake' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Hosta 'Praying Hands' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7 days in summer | Toxic to pets |
| Hosta 'Regal Splendor' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Hosta 'Remember Me' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in the growing season | Toxic to pets |
| Hosta 'Revolution' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days during the growing season | Toxic to pets |
| Hosta 'Royal Standard' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Hosta 'Sagae' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in the growing season | Toxic to pets |
| Hosta 'Shade Fanfare' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Hosta 'Something Different' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 6-8 days in summer | Toxic to pets |
| Hosta 'Stained Glass' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in the growing season | Toxic to pets |
| Hosta 'Sum and Substance' | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, about every 5-7 days; more in heat | Toxic to pets |
| Hosta 'Sum and Substance' | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Hosta 'Touch of Class' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7 days during the growing season | Toxic to pets |
| Hosta 'Twilight' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Hosta 'Undulata Albomarginata' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Hosta 'Ventricosa' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Toxic to pets |
| Hosta 'Wheel of Fortune' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 6-8 days in summer | Toxic to pets |
| Hosta 'Wide Brim' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days during the growing season | Toxic to pets |
| Hot Water Plant | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of potting mix is dry, roughly every 5-7 days during the growing season | Pet-safe |
| Hound's Tongue Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of mix begins to dry, roughly every 7-10 days | Mildly toxic to pets |
| Houseleek Saxifrage | Bright indirect light (just back from a sunny window) | Low — water sparingly at all times; near-dry in summer and winter | Pet-safe |
| Hoya | Bright indirect light (just back from a sunny window) | When the soil is mostly dry, every 10-14 days | Pet-safe |
| Hoya 'Krimson Princess' | Bright indirect light (just back from a sunny window) | When the top half of the mix is dry, every 7-14 days | Pet-safe |
| Hoya 'Krimson Queen' | Bright indirect light (just back from a sunny window) | When the top half of the mix is dry, every 7-14 days | Pet-safe |
| Hoya 'Mathilde' | Bright indirect light (just back from a sunny window) | Roughly every 7-10 days in summer; every 3-4 weeks in winter | Pet-safe |
| Hoya 'Mathilde' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-12 days | Pet-safe |
| Hoya 'Sunrise' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-12 days | Pet-safe |
| Hoya Acuta | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Aff. Lanceolata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Aldrichii | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-12 days | Pet-safe |
| Hoya Archboldiana | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of the mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Australis | Bright indirect light (just back from a sunny window) | when top 2-3 cm of soil dries | Pet-safe |
| Hoya Australis 'Lisa' | Bright indirect light (just back from a sunny window) | Roughly every 1-2 weeks; only when the top 1-2 inches of soil are dry | Pet-safe |
| Hoya Bella | Bright indirect light (just back from a sunny window) | Every 7-10 days in spring/summer; every 2-3 weeks in winter | Pet-safe |
| Hoya Bella 'Variegata' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-9 days in growth | Pet-safe |
| Hoya Bilobata | Bright indirect light (just back from a sunny window) | Every 7-10 days in spring/summer; about every 2 weeks in winter | Pet-safe |
| Hoya Blashernaezii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Burtoniae | Bright indirect light (just back from a sunny window) | When the top 2-4 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| Hoya Cagayanensis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya callistophylla | Bright indirect light (just back from a sunny window) | Roughly every 7-14 days in spring/summer, less in winter | Pet-safe |
| Hoya Calycina | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Campanulata | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya Carnosa 'Rubra' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-14 days | Pet-safe |
| Hoya Carnosa Tricolor | Bright indirect light (just back from a sunny window) | Every 1-2 weeks; let the top inch dry out | Pet-safe |
| Hoya Carnosa Variegata | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, about every 7-14 days | Pet-safe |
| Hoya caudata (Sumatra) | Bright indirect light (just back from a sunny window) | Every 1-2 weeks in growth; every 2-3 weeks in winter | Pet-safe |
| Hoya Celata | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of the mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Chouke | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of the mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Cinnamomifolia | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of the mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Clemensiorum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Pet-safe |
| Hoya Compacta | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 10-14 days | Pet-safe |
| Hoya Compacta 'Regalis' | Bright indirect light (just back from a sunny window) | When the mix is dry to 4-5 cm down, about every 10-14 days | Pet-safe |
| Hoya Coriacea | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya Cumingiana Yellow | Bright indirect light (just back from a sunny window) | When the top few centimetres are dry, roughly every 6-10 days in growth | Pet-safe |
| Hoya Cummingiana | Bright indirect light (just back from a sunny window) | When the top 2-4 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| Hoya curtisii | Bright indirect light (just back from a sunny window) | Roughly weekly in spring and summer; every 10-14 days in autumn and winter | Pet-safe |
| Hoya Danumensis | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Davidcummingii | Bright indirect light (just back from a sunny window) | When the soil is nearly dry, roughly every 10-14 days | Pet-safe |
| Hoya Deykeae | Bright indirect light (just back from a sunny window) | When the top 3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya Diptera | Bright indirect light (just back from a sunny window) | When the top 2-4 cm of the mix is dry, roughly every 6-10 days in growth | Pet-safe |
| Hoya Elliptica | Bright indirect light (just back from a sunny window) | When the top 2-4 cm of mix is dry, roughly every 7-12 days | Pet-safe |
| Hoya Engleriana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 6-9 days in growth | Pet-safe |
| Hoya Erythrina | Bright indirect light (just back from a sunny window) | When the top 3 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Erythrostemma | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Fitchii | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 10-12 days | Pet-safe |
| Hoya Flagellata | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Flavida | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya Fraterna | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-14 days in growth | Pet-safe |
| Hoya fungii | Bright indirect light (just back from a sunny window) | When the top 1-2 inches of mix are dry, roughly every 1-2 weeks | Pet-safe |
| Hoya Fusca | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-12 days | Pet-safe |
| Hoya Gracilipes | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Gracilis | Bright indirect light (just back from a sunny window) | When the mix is nearly or fully dry, roughly every 10-14 days in growth | Pet-safe |
| Hoya Greenii | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Griffithii | Bright indirect light (just back from a sunny window) | When the top 3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya Halconensis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya heuschkeliana | Bright indirect light (just back from a sunny window) | Roughly every 7-10 days in summer; every 2-3 weeks in winter | Pet-safe |
| Hoya Imperialis | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 7-10 days | Pet-safe |
| Hoya Incrassata | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Javanica | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya kentiana | Bright indirect light (just back from a sunny window) | Every 1-2 weeks; let the mix dry out between waterings | Pet-safe |
| Hoya Krimson Princess | Bright indirect light (just back from a sunny window) | Roughly every 1-2 weeks; let the soil dry almost completely first | Pet-safe |
| Hoya Krimson Queen | Bright indirect light (just back from a sunny window) | Roughly every 1-2 weeks; let the top 1-2 inches (or more) of soil dry first | Pet-safe |
| Hoya lacunosa | Bright indirect light (just back from a sunny window) | Roughly every 7-10 days in spring/summer; much less in autumn/winter | Pet-safe |
| Hoya Lacunosa 'Eskimo' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 6-10 days in growth | Pet-safe |
| Hoya Lambii | Bright indirect light (just back from a sunny window) | When the top 3 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Latifolia | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Lauterbachii | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-12 days | Pet-safe |
| Hoya Leucorhoda | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-14 days | Pet-safe |
| Hoya Linearis | Bright indirect light (just back from a sunny window) | Every 7-10 days in spring/summer; every 2-3 weeks in winter | Pet-safe |
| Hoya Lobbii | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, about every 7-10 days in growth | Pet-safe |
| Hoya Loyceandrewsiana | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-14 days in growth | Pet-safe |
| Hoya macrophylla | Bright indirect light (just back from a sunny window) | When the top 1-2 inches (2.5-5 cm) of mix are dry | Pet-safe |
| Hoya Macrophylla 'Variegata' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-14 days | Pet-safe |
| Hoya Mappigera | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Meliflua | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Memoria (Gracilis) | Bright indirect light (just back from a sunny window) | Every 7-14 days in spring/summer; every 2-3 weeks in winter | Pet-safe |
| Hoya Micrantha | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Mindorensis | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 7-10 days | Pet-safe |
| Hoya Mitrata | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya Neoguineensis | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya Nicholsoniae | Bright indirect light (just back from a sunny window) | When the top few centimetres are dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Nummularia | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of the mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Obovata | Bright indirect light (just back from a sunny window) | When the top half of the mix is dry | Pet-safe |
| Hoya Odorata | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 7-10 days | Pet-safe |
| Hoya Onychoides | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Pachyclada | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is fully dry, roughly every 10-14 days in growth | Pet-safe |
| Hoya Pallida | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-9 days in growth | Pet-safe |
| Hoya Pandurata | Bright indirect light (just back from a sunny window) | When the mix is nearly dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Parviflora | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya Patella | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-9 days in growth | Pet-safe |
| Hoya Paxtonii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya Pentaphlebia | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya Picta | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya polyneura (Fishtail Hoya) | Bright indirect light (just back from a sunny window) | Roughly weekly in spring and summer; every 2-3 weeks in winter | Pet-safe |
| Hoya Potsii | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Praetorii | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Pubescens | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya pubicalyx | Bright indirect light (just back from a sunny window) | When the top 2-3 cm is dry, roughly every 7-10 days in summer | Pet-safe |
| Hoya Pubicalyx 'Black Dragon' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-14 days | Pet-safe |
| Hoya Pubicalyx 'Pink Silver' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, about every 7-12 days in growth | Pet-safe |
| Hoya Pubicalyx 'Red Buttons' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, about every 7-12 days in growth | Pet-safe |
| Hoya Pubicalyx 'Royal Hawaiian Purple' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-14 days | Pet-safe |
| Hoya Pubicalyx 'Silver Pink' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Pubicalyx 'Splash' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-14 days | Pet-safe |
| Hoya Rebecca | Bright indirect light (just back from a sunny window) | When the top 2-4 cm of the mix is dry, roughly every 6-10 days in growth | Pet-safe |
| Hoya Retusa | Bright indirect light (just back from a sunny window) | Every 7-10 days in spring/summer; reduce sharply in winter | Pet-safe |
| Hoya Revoluta | Bright indirect light (just back from a sunny window) | When the top 2 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Rigida | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 10-14 days in growth | Pet-safe |
| Hoya Rosarioae | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Rosita | Bright indirect light (just back from a sunny window) | When the top 5 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Hoya Rotundiflora Variegata | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of the mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Sarawakensis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya Scortechinii | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya sigillatis | Bright indirect light (just back from a sunny window) | Every 1-2 weeks; let the top 1-2 inches (3-5 cm) of mix dry out first | Pet-safe |
| Hoya Siikfongensis | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 10-14 days in growth | Pet-safe |
| Hoya Sipitangensis | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Solaniflora | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Spartioides | Bright indirect light (just back from a sunny window) | When the mix is nearly dry throughout, roughly every 12-18 days | Pet-safe |
| Hoya Subcalva | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Sunrise | Bright indirect light (just back from a sunny window) | When the top of the mix is dry, roughly every 7-14 days | Pet-safe |
| Hoya Surigaoensis | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days | Pet-safe |
| Hoya Sussuela | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Telosmoides | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Tsangii | Bright indirect light (just back from a sunny window) | When the top 2-4 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| Hoya Undulata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya Vitellinoides | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 10-14 days in growth | Pet-safe |
| Hoya Vitiensis | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Wallichii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 6-10 days in growth | Pet-safe |
| Hoya Walliniana | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya wayetii | Bright indirect light (just back from a sunny window) | When the top inch of soil is dry | Pet-safe |
| Huernia brevirostris | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in the growing season | Mildly toxic to pets |
| Huernia hystrix | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in summer; nearly dry in winter | Mildly toxic to pets |
| Huernia keniensis | Bright indirect light (just back from a sunny window) | When the soil is fully dry, about every 10-14 days in summer; minimal in winter | Mildly toxic to pets |
| Huernia macrocarpa | Bright indirect light (just back from a sunny window) | When the soil is dry, about every 1-2 weeks in warm growth | Mildly toxic to pets |
| Huernia pillansii | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 12-16 days in summer; rarely in winter | Mildly toxic to pets |
| Huernia schneideriana | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in spring and summer | Mildly toxic to pets |
| Huernia thuretii | Bright indirect light (just back from a sunny window) | When the soil is fully dry, about every 10-14 days in summer; minimal in winter | Mildly toxic to pets |
| Huernia zebrina | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in the growing season | Mildly toxic to pets |
| Humboldt's Bladderwort | Bright indirect light (just back from a sunny window) | Keep bromeliad tank or equivalent reservoir filled with 2–5 cm of pure water at all times; change every 1–2 weeks | Pet-safe |
| Humboldt's Caladium | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth | Toxic to pets |
| Hume Roscoea | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry during active growth, approximately every 10-14 days; nearly none in winter dormancy | Mildly toxic to pets |
| Hunchback Gymnocalycium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-14 days in summer; every 3-4 weeks in winter | Pet-safe |
| Hungarian Barren Strawberry | Medium indirect light (a couple of metres from a window) | Low; drought-tolerant once established | Pet-safe |
| Hyacinth | Bright indirect light (just back from a sunny window) | Weekly watering during growth | Toxic to pets |
| Hybrid mandevilla | Bright indirect light (just back from a sunny window) | Every 5–7 days in summer; every 10–14 days in winter | Mildly toxic to pets |
| Hydrangea | Bright indirect light (just back from a sunny window) | Deep watering 1-2 times per week, more in heat | Toxic to pets |
| Hydrangea 'Annabelle' | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water deeply 2-3 times weekly in summer, more in heat or drought | Toxic to pets |
| Hydrangea 'Annabelle' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days; more frequently in hot weather | Mildly toxic to pets |
| Hydrangea 'Blushing Bride' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil feels dry, roughly every 3-5 days in summer heat | Mildly toxic to pets |
| Hydrangea 'Bobo' | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Hydrangea 'Endless Summer' | Bright indirect light (just back from a sunny window) | Keep consistently moist; water deeply 2-3 times weekly in heat | Toxic to pets |
| Hydrangea 'Endless Summer' | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water deeply 2-3 times weekly in summer heat, more for containers | Toxic to pets |
| Hydrangea 'Incrediball' | Bright indirect light (just back from a sunny window) | When the top 5 cm of soil is dry, about 2-3 times per week in summer | Toxic to pets |
| Hydrangea 'Let's Dance Rhythmic Blue' | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, roughly every 5-7 days during the growing season | Mildly toxic to pets |
| Hydrangea 'Limelight' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Hydrangea 'Nikko Blue' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 5-7 days during the growing season | Mildly toxic to pets |
| Hydrangea 'PeeWee' | Bright indirect light (just back from a sunny window) | When the top 5 cm of soil is dry, about once per week | Toxic to pets |
| Hydrangea 'Quick Fire' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days during the growing season | Mildly toxic to pets |
| Hydrangea 'Snowflake' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Hydrangea 'Strawberry Sundae' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days during the growing season | Mildly toxic to pets |
| Hydrangea 'Tardiva' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Hydrangea aspera 'Villosa' | Bright indirect light (just back from a sunny window) | Keep evenly moist; water deeply every 5-7 days in dry summer spells | Toxic to pets |
| Hydrocotyle leucocephala | Medium indirect light (a couple of metres from a window) | Fully submerged or floating; 30-50% aquarium water change weekly | Mildly toxic to pets |
| Hydrocotyle tripartita | Bright indirect light (just back from a sunny window) | Fully submerged; 30-50% aquarium water change weekly | Mildly toxic to pets |
| Hygrophila corymbosa | Medium indirect light (a couple of metres from a window) | Continuously submerged; 30-50% aquarium water change weekly | Mildly toxic to pets |
| Hygrophila difformis | Medium indirect light (a couple of metres from a window) | Continuously submerged; 30-50% aquarium water change weekly | Mildly toxic to pets |
| Hygrophila lancea 'Araguaia' | Bright indirect light (just back from a sunny window) | Submerged permanently; 25-50% aquarium water changes weekly | Mildly toxic to pets |
| Hygrophila pinnatifida | Medium indirect light (a couple of metres from a window) | Continuously submerged; 30-50% aquarium water change weekly | Mildly toxic to pets |
| Hygrophila polysperma | Medium indirect light (a couple of metres from a window) | Continuously submerged; 30-50% aquarium water change weekly | Mildly toxic to pets |
| Hypoestes phyllostachya 'Carmina' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, often every 4-7 days | Pet-safe |
| Hypoestes phyllostachya 'Confetti Pink' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, often every 4-7 days | Pet-safe |
| Hypoestes phyllostachya 'Splash Select Pink' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, often every 4-7 days | Pet-safe |
| Hypoestes phyllostachya 'Splash Select White' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, often every 4-7 days | Pet-safe |
| Hypoestes phyllostachya 'Wit' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, often every 4-7 days | Pet-safe |
| Iara's Sinningia | Bright indirect light (just back from a sunny window) | Every 7–10 days in active growth; almost none during dormancy | Mildly toxic to pets |
| Ibarra's Butterwort | Bright indirect light (just back from a sunny window) | Keep substrate moist; water every 3–5 days during active growth, reduce to occasional misting when plant is in succulent-rosette phase | Mildly toxic to pets |
| Iberian Cranesbill | Bright indirect light (just back from a sunny window) | Weekly in spring and summer; occasional in autumn | Pet-safe |
| Ice Dance Sedge | Medium indirect light (a couple of metres from a window) | Keep moist while establishing; water deeply weekly in dry spells | Mildly toxic to pets |
| Illumination Periwinkle | Bright indirect light (just back from a sunny window) | Once or twice weekly; more frequently in containers or hot weather | Toxic to pets |
| Imbricate Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 3–5 days; do not allow compost to dry out | Pet-safe |
| Immersed Stelis | Medium indirect light (a couple of metres from a window) | Daily misting for mounted specimens; every 2 days for potted plants | Pet-safe |
| Impatiens | Medium indirect light (a couple of metres from a window) | Twice-weekly watering | Pet-safe |
| Impatiens balsamina | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 2-4 days in summer | Pet-safe |
| Imperial Air Plant | Bright indirect light (just back from a sunny window) | Mist daily or soak for 20–30 minutes 2–3 times per week in the growing season. | Mildly toxic to pets |
| Imperial Green | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Inch Plant | Bright indirect light (just back from a sunny window) | Roughly weekly in summer; every 10-14 days in winter | Toxic to pets |
| Inch Plant 'Nanouk' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Indian Head Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days in spring and summer; every 3-4 weeks in autumn; minimal in winter | Pet-safe |
| Indian Snap Ginger | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Mildly toxic to pets |
| Indonesian Wax Ginger | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil becomes dry, roughly every 5-7 days | Mildly toxic to pets |
| Inflated Wax Plant | Bright indirect light (just back from a sunny window) | Every 14–21 days in summer, every 4–6 weeks in winter | Pet-safe |
| Inner-grooved Specklinia | Medium indirect light (a couple of metres from a window) | Daily or every other day; keep consistently moist | Pet-safe |
| Inner-rough Pleurothallis | Medium indirect light (a couple of metres from a window) | When the medium surface is just drying, roughly every 4-6 days | Pet-safe |
| Intergeneric Aliceara 'Pacific Sabre' | Bright indirect light (just back from a sunny window) | Water thoroughly when the top of the bark approaches dryness, typically every 5-7 days | Pet-safe |
| Intermediate Air Plant | Bright indirect light (just back from a sunny window) | Mist 2–3 times per week in summer; 1–2 times per week in winter. | Mildly toxic to pets |
| Intermediate Galangal | Medium indirect light (a couple of metres from a window) | Twice a week in warm months; once a week or less in cooler conditions | Mildly toxic to pets |
| Intermediate Polypody | Medium indirect light (a couple of metres from a window) | Every 7–10 days in active growth (autumn–spring); reduce to every 2–3 weeks in summer | Pet-safe |
| Interrupted Fern | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water every 3-5 days | Mildly toxic to pets |
| Ionas Sun Pitcher | Bright indirect light (just back from a sunny window) | Water every 3-5 days to keep substrate consistently moist; maintain a partial fill of distilled water in the pitchers at all times | Pet-safe |
| Ionas' sun pitcher | Bright indirect light (just back from a sunny window) | Daily or every other day; keep media continuously moist | Pet-safe |
| Ionas's Sun Pitcher | Bright indirect light (just back from a sunny window) | Keep soil constantly moist; shallow tray of a few mm of water is acceptable | Mildly toxic to pets |
| Ionopsis utricularioides | Bright indirect light (just back from a sunny window) | Water frequently as roots near dryness, often daily on a mount in warm weather | Mildly toxic to pets |
| Irene Nuss Cane Begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 5-7 days in summer | Toxic to pets |
| Iron Butterfly Foamflower | Medium indirect light (a couple of metres from a window) | Once or twice per week during the growing season; water sparingly in winter. | Mildly toxic to pets |
| Iron Butterfly Tiarella | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water deeply once or twice a week when rainfall is short | Mildly toxic to pets |
| Iron Cross Begonia | Bright indirect light (just back from a sunny window) | When the top 2.5cm of compost dries, roughly weekly | Toxic to pets |
| Isabel Chan's Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring and summer, every 3–4 weeks in winter | Pet-safe |
| Isalo Adenia | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer; withhold almost entirely in winter | Toxic to pets |
| Island Liveforever | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in active season (October–April); none to minimal in summer | Pet-safe |
| Italian jasmine | Bright indirect light (just back from a sunny window) | Every 7–14 days; drought-tolerant once established | Mildly toxic to pets |
| Itea virginica | Bright indirect light (just back from a sunny window) | Keep soil moist; water weekly or more in dry spells, tolerant of wet ground | Mildly toxic to pets |
| Itea virginica 'Henry's Garnet' | Bright indirect light (just back from a sunny window) | Keep soil moist; water weekly or more in dry weather, tolerant of wet ground | Mildly toxic to pets |
| Itea virginica 'Little Henry' | Bright indirect light (just back from a sunny window) | Keep soil moist; water weekly or more in dry spells, tolerant of wet ground | Mildly toxic to pets |
| Ithuriel's Spear | Bright indirect light (just back from a sunny window) | Moderate in spring during active growth; dry summer dormancy required | Mildly toxic to pets |
| Itsy Bitsy Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days in the growing season; every 2–3 weeks in winter | Pet-safe |
| Ivan Cranesbill | Medium indirect light (a couple of metres from a window) | Once or twice a week in dry spells; less in cooler or wetter periods | Pet-safe |
| Ivory Cane Palm | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Ivory Cymbidium | Bright indirect light (just back from a sunny window) | Thorough watering every 5–7 days in active growth; reduce significantly in winter | Pet-safe |
| Ivory Primulina | Medium indirect light (a couple of metres from a window) | Allow the top half of compost to dry before rewatering | Mildly toxic to pets |
| Ivory Tree | Bright indirect light (just back from a sunny window) | Every 4–7 days; allow topsoil to dry slightly between waterings | Toxic to pets |
| Ivy-Leaf Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days in spring/summer; every 3–4 weeks in autumn/winter | Pet-safe |
| Ivy-Leaved Cyclamen | Medium indirect light (a couple of metres from a window) | Drought-tolerant once established; rely entirely on natural rainfall | Toxic to pets |
| Ivy-leaved Duckweed | Medium indirect light (a couple of metres from a window) | Permanently submerged | Pet-safe |
| ivy-leaved scindapsus | Medium indirect light (a couple of metres from a window) | Every 7–14 days depending on season and light | Toxic to pets |
| Jaboticaba | Bright indirect light (just back from a sunny window) | Every 5–7 days; keep consistently moist but not waterlogged | Pet-safe |
| Jacobinia Carnea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, typically every 4-7 days in growth | Mildly toxic to pets |
| Jacqueline Postill Daphne | Bright indirect light (just back from a sunny window) | Roughly every 7-10 days in the growing season, allowing the top 3-5 cm to dry between waterings | Toxic to pets |
| Jalisco Mountain Air Plant | Bright indirect light (just back from a sunny window) | Mist or dunk every 2–3 days in hot weather; once a week in cool, humid conditions. | Mildly toxic to pets |
| Janke's Gesneriad | Medium indirect light (a couple of metres from a window) | Water at the root zone only when the soil approaches dryness, roughly every 10–14 days in the growing season | Mildly toxic to pets |
| Japanese Anemone 'Honorine Jobert' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Japanese astilbe | Medium indirect light (a couple of metres from a window) | Twice per week in active growth; weekly in cooler seasons | Pet-safe |
| Japanese Beech Fern | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water when the top 2-3 cm begin to dry, roughly weekly during dry periods | Mildly toxic to pets |
| Japanese Big-Leaf Magnolia | Bright indirect light (just back from a sunny window) | Weekly during dry periods; established trees are moderately drought-tolerant | Pet-safe |
| Japanese Bird's Nest Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Japanese box | Bright indirect light (just back from a sunny window) | Weekly when young; every 10–14 days once established | Toxic to pets |
| Japanese Brake Fern | Medium indirect light (a couple of metres from a window) | Every 4–6 days in the growing season; every 7–10 days in winter | Pet-safe |
| Japanese Camellia | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry; keep evenly moist in late summer | Pet-safe |
| Japanese Camellia 'Nuccio's Pearl' | Bright indirect light (just back from a sunny window) | About weekly, more in heat and during budding; water when the top 3-5 cm of soil is dry | Pet-safe |
| Japanese Catmint | Medium indirect light (a couple of metres from a window) | Every 5–7 days; do not allow to dry out completely | Pet-safe |
| Japanese Chain Fern | Medium indirect light (a couple of metres from a window) | Every 4–6 days in summer, every 8–12 days in winter | Pet-safe |
| Japanese Climbing Fern | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top 2-3 cm of soil is dry, roughly weekly | Mildly toxic to pets |
| Japanese Cobra Lily | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist during the growing season (spring to early summer); cease watering during summer dormancy | Toxic to pets |
| Japanese Fairy Bells | Medium indirect light (a couple of metres from a window) | Regular; keep soil evenly moist throughout the growing season. | Mildly toxic to pets |
| Japanese False Spleenwort | Medium indirect light (a couple of metres from a window) | Every 3–5 days in growing season; reduce slightly in winter | Mildly toxic to pets |
| Japanese forest grass | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist; water 1-2 times weekly, more in heat | Mildly toxic to pets |
| Japanese Holly 'Sky Pencil' | Bright indirect light (just back from a sunny window) | When the top few centimetres of soil dry; about weekly in summer | Toxic to pets |
| Japanese kerria | Medium indirect light (a couple of metres from a window) | Weekly during establishment; drought-tolerant once established | Mildly toxic to pets |
| Japanese Maple | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, about weekly and more in heat | Mildly toxic to pets |
| Japanese Maple 'Bloodgood' | Bright indirect light (just back from a sunny window) | Keep evenly moist; water deeply in dry spells | Mildly toxic to pets |
| Japanese Maple 'Crimson Queen' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, about weekly and more in heat or pots | Mildly toxic to pets |
| Japanese Maple 'Dissectum' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, often weekly in summer | Pet-safe |
| Japanese Maple 'Osakazuki' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, around weekly in dry weather | Pet-safe |
| Japanese Maple 'Sango Kaku' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly weekly in dry spells | Pet-safe |
| Japanese Maple 'Tamukeyama' | Bright indirect light (just back from a sunny window) | One to two deep waterings per week when growing | Pet-safe |
| Japanese Nutmeg Yew | Medium indirect light (a couple of metres from a window) | Every 7–10 days when establishing; established trees rely on rainfall with supplemental watering in dry spells | Mildly toxic to pets |
| Japanese Painted Fern | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; typically water every 3-5 days indoors, more in heat | Mildly toxic to pets |
| Japanese Painted Fern | Medium indirect light (a couple of metres from a window) | Every 4–7 days; keep soil evenly moist | Pet-safe |
| Japanese Painted Fern 'Pictum' | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is just drying, often every 4-7 days | Mildly toxic to pets |
| Japanese Peperomia | Medium indirect light (a couple of metres from a window) | Every 7–10 days in the growing season; reduce in winter | Pet-safe |
| Japanese Pepper Vine | Medium indirect light (a couple of metres from a window) | When the top 2–3 cm of soil dry out, approximately every 5–7 days | Mildly toxic to pets |
| Japanese Pieris | Bright indirect light (just back from a sunny window) | Keep evenly moist; water weekly in dry spells and never let it dry out | Toxic to pets |
| Japanese Pieris 'Forest Flame' | Bright indirect light (just back from a sunny window) | Keep evenly moist; water weekly during dry spells, more in containers | Toxic to pets |
| Japanese Pieris 'Mountain Fire' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry; keep evenly moist, particularly while establishing | Toxic to pets |
| Japanese Pieris Flamingo | Bright indirect light (just back from a sunny window) | Water deeply every 7–10 days; more frequently in hot, dry spells | Toxic to pets |
| Japanese Plum Yew | Medium indirect light (a couple of metres from a window) | Keep evenly moist; weekly in dry spells, more while establishing | Mildly toxic to pets |
| Japanese Royal Fern | Medium indirect light (a couple of metres from a window) | Frequently — keep soil constantly moist | Pet-safe |
| Japanese Rush | Bright indirect light (just back from a sunny window) | Permanently submerged aquatic plant | Pet-safe |
| Japanese Sage | Medium indirect light (a couple of metres from a window) | Regular during growing season; reduce in winter | Pet-safe |
| Japanese Shield Fern | Medium indirect light (a couple of metres from a window) | Regular; keep soil evenly moist | Pet-safe |
| Japanese Show Lily | Bright indirect light (just back from a sunny window) | Regular during active growth, roughly every 5–7 days in dry spells; reduce after foliage dies back | Toxic to pets |
| Japanese Solomon's Seal | Medium indirect light (a couple of metres from a window) | Every 5–7 days during growth; minimal when dormant | Mildly toxic to pets |
| Japanese Stiff Shield Fern | Medium indirect light (a couple of metres from a window) | Weekly in the first year, then only during prolonged dry spells | Pet-safe |
| Japanese Sweet Flag | Bright indirect light (just back from a sunny window) | Keep soil consistently moist or wet; do not allow to dry out | Mildly toxic to pets |
| Japanese Tassel Fern | Medium indirect light (a couple of metres from a window) | Regular; maintain consistent moisture | Pet-safe |
| Japanese Umbrella Pine | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly weekly while young, less once established | Mildly toxic to pets |
| Japanese Witch Hazel | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-14 days in the growing season | Pet-safe |
| Japanese Wood Poppy | Medium indirect light (a couple of metres from a window) | Regular; keep soil evenly moist during the growing season | Mildly toxic to pets |
| Jasmine (Pink Jasmine) | Bright indirect light (just back from a sunny window) | When the top 2-3cm of soil feels dry, roughly weekly in growth | Pet-safe |
| Javanese Ixora | Bright indirect light (just back from a sunny window) | Every 5–7 days; maintain consistent moisture throughout the growing season | Mildly toxic to pets |
| Jean's Dilly Spruce | Bright indirect light (just back from a sunny window) | Regular; do not allow to dry out completely, especially in warm weather | Pet-safe |
| Jeddeloh Hemlock | Bright indirect light (just back from a sunny window) | Regular — do not allow to dry out | Pet-safe |
| Jelena witch hazel | Bright indirect light (just back from a sunny window) | Regularly during establishment; thereafter water during summer dry spells | Mildly toxic to pets |
| Jelena Witch Hazel | Bright indirect light (just back from a sunny window) | Deeply once or twice a week during the first growing season; established plants roughly every 10-14 days or as the top 5 cm dries | Mildly toxic to pets |
| Jelly Bean Plant | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in growth | Mildly toxic to pets |
| Jelly Bean Plant (Pork and Beans) | Bright indirect light (just back from a sunny window) | Every 10-14 days in spring and summer; roughly monthly or less in winter | Mildly toxic to pets |
| Jelly Peperomia | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, typically every 7-12 days | Pet-safe |
| Jenkins Fan Palm | Bright indirect light (just back from a sunny window) | When top 2–3 cm of soil feels dry | Pet-safe |
| Jenkins Fan Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in growing season | Pet-safe |
| Jewel Orchid | Bright indirect light (just back from a sunny window) | Every 7-10 days; keep the mix evenly moist, never bone dry | Pet-safe |
| Johann's Neoregelia | Bright indirect light (just back from a sunny window) | Top up central cup every 5–7 days; soil every 2–3 weeks | Pet-safe |
| Johannes Cape Primrose | Medium indirect light (a couple of metres from a window) | Every 5-8 days in active growth; every 2-3 weeks in winter | Pet-safe |
| Johnny Jump Up | Bright indirect light (just back from a sunny window) | When the top 1–2 cm of soil is dry, roughly every 5–7 days | Mildly toxic to pets |
| Johnson's Pleurothallis | Medium indirect light (a couple of metres from a window) | Every 1–2 days in summer; every 3–4 days in cooler months | Pet-safe |
| Johnston's Cyrtosperma | Bright indirect light (just back from a sunny window) | Keep permanently moist to waterlogged; does not tolerate drought | Toxic to pets |
| Jolly Bee Cranesbill | Bright indirect light (just back from a sunny window) | Regular; keep moderately moist | Mildly toxic to pets |
| Joseph's Coat Plant | Bright indirect light (just back from a sunny window) | Every 5–7 days in spring/summer; every 10–14 days in autumn/winter | Pet-safe |
| Joseph's Lepanthes | Medium indirect light (a couple of metres from a window) | Every 7–10 days (potted); near-daily misting if mounted | Pet-safe |
| Jungfrau Saxifrage | Bright indirect light (just back from a sunny window) | Water moderately; allow soil to partially dry between waterings and reduce in winter. | Pet-safe |
| Jupiter's Distaff | Medium indirect light (a couple of metres from a window) | Regularly in dry spells, especially in sun | Pet-safe |
| Justicia aurea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-7 days in warm growth | Mildly toxic to pets |
| Justicia scheidweileri | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Mildly toxic to pets |
| Kaapsehoop Cycad | Bright indirect light (just back from a sunny window) | Every 1–2 weeks in summer; every 3–4 weeks in winter | Toxic to pets |
| Kahili Ginger | Bright indirect light (just back from a sunny window) | Water freely in spring and summer (every 3–5 days); reduce sharply in autumn and keep barely moist over winter | Mildly toxic to pets |
| Kalanchoe 'Calandiva' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is fully dry, roughly every 7-14 days | Toxic to pets |
| Kalanchoe 'Kerinci' | Bright indirect light (just back from a sunny window) | When the soil is dry to about halfway down, every 10-14 days | Toxic to pets |
| Kalanchoe Eriophylla | Bright indirect light (just back from a sunny window) | When the soil is dry to a depth of 3-4 cm, roughly every 10-14 days in growth | Toxic to pets |
| Kalanchoe Fedtschenkoi | Bright indirect light (just back from a sunny window) | When the top of the soil is dry, about every 1-2 weeks in summer, every 3-4 weeks in winter | Toxic to pets |
| Kalanchoe Longiflora | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in growth | Toxic to pets |
| Kalanchoe Marmorata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in summer and every 2-3 weeks in winter | Toxic to pets |
| Kalanchoe Millotii | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in growth | Toxic to pets |
| Kalanchoe Pumila | Bright indirect light (just back from a sunny window) | When soil is fully dry, about every 1-2 weeks in summer, every 3-4 weeks in winter | Toxic to pets |
| Kalanchoe Rhombopilosa | Bright indirect light (just back from a sunny window) | When soil is fully dry, about every 2-3 weeks in summer, monthly in winter | Toxic to pets |
| Kalanchoe Synsepala | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in growth | Toxic to pets |
| Kalanchoe Tomentosa 'Chocolate Soldier' | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in summer, monthly in winter | Toxic to pets |
| Kamchatka Bugbane | Medium indirect light (a couple of metres from a window) | 2–3 times per week in growing season; weekly when dormant | Mildly toxic to pets |
| Kangaroo Paw Fern | Bright indirect light (just back from a sunny window) | Roughly weekly; keep the mix consistently, lightly moist | Mildly toxic to pets |
| Kangaroo Vine | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Pet-safe |
| Karl Foerster Feather Reed Grass | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 2 weeks once established | Pet-safe |
| Karl Foerster Reed Grass | Bright indirect light (just back from a sunny window) | Every 7-14 days during the first season; established plants need water only in prolonged drought | Pet-safe |
| Kashmir Gentian | Bright indirect light (just back from a sunny window) | Keep evenly moist through the growing season | Mildly toxic to pets |
| Kauri | Bright indirect light (just back from a sunny window) | Every 5–7 days in spring/summer; reduce to every 10–14 days in winter | Pet-safe |
| Kaurima Pyrenacantha | Medium indirect light (a couple of metres from a window) | Every 7–14 days in the growing season; monthly or less in winter | Mildly toxic to pets |
| Keisk's Leucothoe | Medium indirect light (a couple of metres from a window) | Every 5–7 days in the growing season; sensitive to both drought and waterlogging | Toxic to pets |
| Keiske's Leucothoe | Medium indirect light (a couple of metres from a window) | Once or twice a week in the growing season, less in winter | Toxic to pets |
| Kellerman's Begonia | Bright indirect light (just back from a sunny window) | When the top third of the soil is dry | Toxic to pets |
| Kenneally's Sundew | Bright indirect light (just back from a sunny window) | Standing tray (growing season); minimal (dry rest) | Pet-safe |
| Kentia palm | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, every 10-14 days | Pet-safe |
| Kerala Lagenandra | Medium indirect light (a couple of metres from a window) | Permanently saturated or submerged substrate; never allow to dry | Toxic to pets |
| Keramanthus Adenia | Bright indirect light (just back from a sunny window) | Every 7–14 days during active growth; drastically reduced in dormancy | Toxic to pets |
| Kidney Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 3–5 days during active growth; every 6–8 days in winter | Pet-safe |
| kidney-leaved bladderwort | Bright indirect light (just back from a sunny window) | Keep media consistently moist; sit in shallow tray of 1 cm of water or mist daily | Pet-safe |
| Kim cape primrose | Bright indirect light (just back from a sunny window) | Every 7–10 days during spring and summer; every 14–21 days in winter | Pet-safe |
| Kimberly queen fern | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, every 5-7 days | Pet-safe |
| King Anthurium | Bright indirect light (just back from a sunny window) | when top 2-3 cm dry | Toxic to pets |
| King Billy Pine | Bright indirect light (just back from a sunny window) | Keep consistently moist at all times; never allow to dry out, watering deeply in any dry spell | Mildly toxic to pets |
| King Ferdinand's Saxifrage | Bright indirect light (just back from a sunny window) | Low — water moderately in active growth; reduce sharply in summer dormancy and winter | Pet-safe |
| King of Hearts Bleeding Heart | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly weekly | Toxic to pets |
| King Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-7 days | Pet-safe |
| Kirchhoff's Air Plant | Medium indirect light (a couple of metres from a window) | Mist 3–4 times per week or soak for 20–30 minutes twice a week. | Mildly toxic to pets |
| Kirk Wild Ginger | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry during active growth, roughly every 7-10 days; near-dry during winter dormancy | Mildly toxic to pets |
| Kirk's Huernia | Bright indirect light (just back from a sunny window) | Every 14–21 days when growing (spring–autumn); once monthly or less in winter | Pet-safe |
| Kitten Tails | Medium indirect light (a couple of metres from a window) | Infrequently; dry to medium-dry | Mildly toxic to pets |
| Kiwi Aeonium | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, roughly every 7-12 days in active growth | Mildly toxic to pets |
| Kloss's Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep medium evenly moist; water every 2–4 days | Mildly toxic to pets |
| Klotzsch's Parlour Palm | Medium indirect light (a couple of metres from a window) | Every 7–10 days in summer, every 14–21 days in winter | Pet-safe |
| Knap Hill Scarlet quince | Bright indirect light (just back from a sunny window) | Weekly when establishing; monthly once established | Mildly toxic to pets |
| Kneed Alcantarea | Bright indirect light (just back from a sunny window) | Refill the large central cup every 5-7 days; water the medium sparingly only when the top 4-5 cm is dry, roughly every 14-21 days | Pet-safe |
| Knotweed Begonia | Bright indirect light (just back from a sunny window) | Every 5–8 days in the growing season; every 10–14 days in winter | Toxic to pets |
| Kohleria | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 5-7 days in growth | Pet-safe |
| Kohleria 'Dark Velvet' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Pet-safe |
| Kohleria 'Hannah Roberts' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Pet-safe |
| Kohleria amabilis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Pet-safe |
| Kohleria digitaliflora | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Korean Angelica | Medium indirect light (a couple of metres from a window) | 2-3 times per week in active growth; reduce in winter | Mildly toxic to pets |
| Korean Arborvitae | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 1–2 weeks once established | Mildly toxic to pets |
| Korean box | Bright indirect light (just back from a sunny window) | Weekly when young; every 10–14 days once established | Toxic to pets |
| Korean feather reed grass | Bright indirect light (just back from a sunny window) | Water deeply 1-2 times weekly; keep soil consistently moist but not waterlogged | Pet-safe |
| Korean Hornbeam Bonsai | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil starts to dry, often daily in summer | Mildly toxic to pets |
| Korean rhododendron | Bright indirect light (just back from a sunny window) | Weekly during establishment and summer; reduce to monthly when dormant | Toxic to pets |
| Korean Rock Fern | Medium indirect light (a couple of metres from a window) | Every 5–7 days in growing season; reduce in winter | Pet-safe |
| Kotschy's Crambe | Bright indirect light (just back from a sunny window) | Moderate — water during dry spells, especially in the establishment year | Mildly toxic to pets |
| Kotschyan Aerangis | Bright indirect light (just back from a sunny window) | Every 5-7 days in growth; every 10-14 days during winter rest | Pet-safe |
| Kousa Dogwood | Bright indirect light (just back from a sunny window) | Weekly deep watering while establishing | Pet-safe |
| Kramer's Butterfly Orchid | Bright indirect light (just back from a sunny window) | When the top of the bark is nearly dry, every 7-10 days year-round | Pet-safe |
| Krossa Regal Hosta | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Kucyniak's Columnea | Bright indirect light (just back from a sunny window) | When top 2–3 cm of compost is dry | Pet-safe |
| Kucynjak's Columnea | Bright indirect light (just back from a sunny window) | Every 5–7 days in summer; every 10–14 days in winter | Pet-safe |
| Kuma Bamboo Grass | Medium indirect light (a couple of metres from a window) | 2–3 times per week in growing season, reduce in winter | Pet-safe |
| Kupper's Werauhia | Bright indirect light (just back from a sunny window) | Refill tank weekly; water substrate every 1-2 weeks when top layer is dry | Pet-safe |
| Kuril Bamboo | Medium indirect light (a couple of metres from a window) | 2-3 times per week in growing season; weekly in winter | Pet-safe |
| Kurume Azalea 'Hino Crimson' | Bright indirect light (just back from a sunny window) | About weekly once established, more in heat; water when the top 2-3 cm of soil is dry | Toxic to pets |
| Küster's Ceratozamia | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; every 3–5 weeks in winter | Toxic to pets |
| Labrador violet | Medium indirect light (a couple of metres from a window) | Every 5–7 days; keep consistently moist | Pet-safe |
| Lacandon Zamia | Medium indirect light (a couple of metres from a window) | Every 7–10 days in growing season; every 2–3 weeks in winter | Toxic to pets |
| Lace Aloe | Bright indirect light (just back from a sunny window) | Every 2-3 weeks in spring/summer; roughly monthly or less in winter | Toxic to pets |
| Lace Fern | Bright indirect light (just back from a sunny window) | When the soil is completely dry, approximately every 10-21 days depending on temperature and season | Pet-safe |
| Lace Flower Vine | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, about every 5-7 days | Pet-safe |
| Lace Flower Vine | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of potting mix is dry, roughly every 5-7 days | Pet-safe |
| Lacecap Hydrangea | Bright indirect light (just back from a sunny window) | When the top 2-4 cm of soil is dry, often several times a week in heat | Toxic to pets |
| Laceleaf Japanese Maple 'Crimson Queen' | Bright indirect light (just back from a sunny window) | Deeply once or twice a week in the growing season, more in heat | Pet-safe |
| Lacquered Pepper Plant | Bright indirect light (just back from a sunny window) | When the top 2–3 cm of soil feel dry, roughly once a week during the growing season | Mildly toxic to pets |
| Lady Fern | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil starts to dry, roughly every 3-5 days indoors | Pet-safe |
| Lady in Red Fern | Medium indirect light (a couple of metres from a window) | Keep consistently moist, roughly every 3-5 days for potted plants | Mildly toxic to pets |
| Lady of the Night | Bright indirect light (just back from a sunny window) | Every 5–7 days; adjust based on season and soil moisture | Toxic to pets |
| Lady of the Night | Bright indirect light (just back from a sunny window) | When fully dry, roughly every 7-10 days | Pet-safe |
| Lady of the Night | Bright indirect light (just back from a sunny window) | Allow roots and medium to dry almost completely between waterings, roughly every 5-7 days in active growth and every 10-14 days in winter rest | Pet-safe |
| Lady palm | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, every 7-10 days | Pet-safe |
| Lady Slipper Orchid | Bright indirect light (just back from a sunny window) | Every 5-10 days; keep the medium evenly moist | Mildly toxic to pets |
| Laelia anceps | Bright indirect light (just back from a sunny window) | Every 5-7 days when growing; reduce sharply through winter rest | Pet-safe |
| Laelia gouldiana | Bright indirect light (just back from a sunny window) | Every 5-7 days in growth; sparingly through the dry winter rest | Pet-safe |
| Laelia purpurata | Bright indirect light (just back from a sunny window) | Every 5-7 days in growth; less in the cooler rest, every 10-14 days | Pet-safe |
| Laelia rubescens | Bright indirect light (just back from a sunny window) | Every 5-7 days in growth; very sparingly in the long dry rest | Pet-safe |
| Laguna Beach Liveforever | Bright indirect light (just back from a sunny window) | Every 10–14 days from autumn through spring; withhold almost entirely in summer | Pet-safe |
| Lamance Iris | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; tolerates seasonal flooding of 5–10 cm (2–4 in) for short periods. | Toxic to pets |
| Lamellate Vanda | Bright indirect light (just back from a sunny window) | Daily to every 2 days in active growth; every 3–4 days in cooler months | Pet-safe |
| Lamprocapnos spectabilis 'Alba' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil begins to dry, roughly every 5-7 days in spring | Toxic to pets |
| Lamprocapnos spectabilis 'Gold Heart' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil begins to dry, roughly every 5-7 days in spring | Toxic to pets |
| Lance Brassia | Bright indirect light (just back from a sunny window) | Once or twice per week in active growth; reduce to every 10–14 days in cooler months | Pet-safe |
| Lance-leaf Liveforever | Bright indirect light (just back from a sunny window) | Every 10–14 days in winter and spring (active season); withhold almost entirely in summer | Pet-safe |
| Lance-Leaf Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Lance-leaf Stelis | Medium indirect light (a couple of metres from a window) | Every 2–3 days; never allow the medium to dry completely | Pet-safe |
| Lance-leaved Sundew | Bright indirect light (just back from a sunny window) | Keep permanently wet via the tray method (1-2 inches of standing water); never let the media dry out | Mildly toxic to pets |
| Lance-leaved Sundew | Medium indirect light (a couple of metres from a window) | Keep tray topped up year-round | Pet-safe |
| Lance-Leaved Trillium | Medium indirect light (a couple of metres from a window) | Moist in spring; more drought-tolerant than most Trilliums once dormant | Mildly toxic to pets |
| Langsat | Bright indirect light (just back from a sunny window) | 2–3 times per week; more frequently in dry season | Pet-safe |
| Lansberg's Restrepia | Bright indirect light (just back from a sunny window) | Every 2-4 days; evenly moist but not waterlogged | Pet-safe |
| Laos Lady Palm | Medium indirect light (a couple of metres from a window) | Every 7–10 days in the growing season; every 14–21 days in winter | Pet-safe |
| Laos Lady Palm | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil dries out, roughly every 7-10 days | Pet-safe |
| Large Cattleya | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; every 14–21 days during the autumn-winter rest | Pet-safe |
| Large Chain Orchid | Bright indirect light (just back from a sunny window) | Every 5-7 days during active growth; reduce to every 10-14 days in winter | Pet-safe |
| Large Masterwort | Medium indirect light (a couple of metres from a window) | Every 5-7 days; soil should remain evenly moist throughout the growing season | Mildly toxic to pets |
| Large Yellow Foxglove | Bright indirect light (just back from a sunny window) | Once or twice a week in dry spells; consistent moisture is important for longevity | Toxic to pets |
| Large-Bulb Bulbophyllum | Bright indirect light (just back from a sunny window) | Every 3–5 days in active growth; reduce slightly in cooler months | Pet-safe |
| Large-cloaked Stelis | Medium indirect light (a couple of metres from a window) | Every 1–2 days, never allowing the medium to dry completely | Pet-safe |
| Large-Cupped Billbergia | Bright indirect light (just back from a sunny window) | Every 7–10 days; keep central cup filled | Pet-safe |
| Large-flower Bulbophyllum | Bright indirect light (just back from a sunny window) | Water when the top of the medium begins to dry, approximately every 3-5 days | Pet-safe |
| Large-flowered Bellwort | Medium indirect light (a couple of metres from a window) | Moderate; water regularly during spring and early summer growth. Established plants tolerate summer drought. | Pet-safe |
| large-flowered butterwort | Bright indirect light (just back from a sunny window) | Keep soil permanently damp during growing season; reduce but do not dry out completely in winter | Pet-safe |
| Large-Flowered Kohleria | Bright indirect light (just back from a sunny window) | When top 2 in (5 cm) are dry during the growing season; very sparingly in winter dormancy | Pet-safe |
| Large-Flowered Maxillaria | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; every 7–10 days in cooler months | Pet-safe |
| Large-Flowered Petrocosmea | Medium indirect light (a couple of metres from a window) | Every 7–10 days in growth; sparingly in winter | Pet-safe |
| Large-Flowered Stanhopea | Bright indirect light (just back from a sunny window) | Frequently during growing season; reduce by half in winter | Pet-safe |
| Large-Leaf Lycaste | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; every 10–14 days in winter | Pet-safe |
| Large-Leaf Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; much less in winter | Pet-safe |
| Large-Leaf Primulina | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of potting mix is dry, roughly every 7-10 days | Pet-safe |
| Large-Leaved Butterwort | Bright indirect light (just back from a sunny window) | Keep substrate damp in summer; reduce sharply in winter | Mildly toxic to pets |
| Large-Leaved Drymonia | Medium indirect light (a couple of metres from a window) | Every 5–8 days; allow top 2 cm to dry slightly between waterings | Pet-safe |
| Large-leaved Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 2–3 days; adjust based on temperature and pot size | Pet-safe |
| Large-perianth Goldfish Plant | Bright indirect light (just back from a sunny window) | When the top 2–3 cm of soil feels dry | Pet-safe |
| Large-Spike Peperomia | Medium indirect light (a couple of metres from a window) | Every 2–3 weeks (allow top half to two-thirds of soil to dry) | Pet-safe |
| large-stalked sinningia | Bright indirect light (just back from a sunny window) | Every 7–14 days in active growth; withhold through dormancy | Pet-safe |
| Large-Vein Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days during the growing season; every 3–4 weeks in winter | Pet-safe |
| Larryleachia marlothii | Bright indirect light (just back from a sunny window) | Sparingly; only when fully dry, roughly every 2-3 weeks in warm growth | Mildly toxic to pets |
| Lasia spinosa | Bright indirect light (just back from a sunny window) | Keep constantly wet to waterlogged | Toxic to pets |
| Lauterbach's Fan Palm | Bright indirect light (just back from a sunny window) | Every 5–7 days in growing season; every 10–14 days in cooler months | Pet-safe |
| Lavender Chirita | Bright indirect light (just back from a sunny window) | Every 5–7 days; keep evenly moist during active growth | Pet-safe |
| Lavender trumpet vine | Bright indirect light (just back from a sunny window) | Weekly during the growing and flowering season; every 2–3 weeks in summer and winter. | Mildly toxic to pets |
| Lawes' Dendrobium | Bright indirect light (just back from a sunny window) | Freely in the growing season (every 2-4 days); reduce to very minimal in the dry winter rest | Pet-safe |
| Lawi Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring and summer, every 3–4 weeks in autumn and winter | Pet-safe |
| Lawn Pennywort | Bright indirect light (just back from a sunny window) | Fully submerged aquatic or marginal; keep substrate or water consistently moist | Pet-safe |
| Lawrence's Coelogyne | Bright indirect light (just back from a sunny window) | Every 5–7 days year-round; slightly less frequent in coolest winter months | Pet-safe |
| Lawrence's Coelogyne | Bright indirect light (just back from a sunny window) | Every 5-7 days during active growth; reduce to every 14-21 days in winter when temperatures are cooler | Pet-safe |
| Lawson Cypress | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 2 weeks once established | Mildly toxic to pets |
| Leaf-Spined Brain Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-14 days during summer; once every 4-6 weeks in winter | Pet-safe |
| Leafy Orthophytum | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Least Yellow Pond Lily | Bright indirect light (just back from a sunny window) | Permanently submerged — thrives at water depths of 30–100 cm (1–3 ft). | Mildly toxic to pets |
| Leather Polypody | Medium indirect light (a couple of metres from a window) | Every 5–8 days; keep soil consistently moist but not waterlogged | Mildly toxic to pets |
| Leatherleaf | Bright indirect light (just back from a sunny window) | Consistently wet to moist — never allow to dry out | Toxic to pets |
| Leatherleaf Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of mix is dry, roughly every 5-8 days | Mildly toxic to pets |
| leatherleaf viburnum | Bright indirect light (just back from a sunny window) | Weekly when establishing; every 2–4 weeks once mature | Mildly toxic to pets |
| Leathery Polypody | Medium indirect light (a couple of metres from a window) | Every 7–10 days in growing season; monthly in winter dormancy | Pet-safe |
| Lebanese Rosularia | Bright indirect light (just back from a sunny window) | Every 2–4 weeks in growing season; monthly or less in winter | Pet-safe |
| Leloja Kedrostis | Bright indirect light (just back from a sunny window) | Every 7–14 days in the growing season; very sparingly in winter | Mildly toxic to pets |
| Lemboglossum rossii | Bright indirect light (just back from a sunny window) | Water when the bark approaches dryness, roughly every 4-7 days, keeping pseudobulbs plump | Pet-safe |
| Lemmaphyllum microphyllum | Bright indirect light (just back from a sunny window) | When the mount or mix is nearly dry, roughly every 4-7 days | Mildly toxic to pets |
| Lemna minor | Bright indirect light (just back from a sunny window) | Floats permanently on still or slow water; no separate watering | Mildly toxic to pets |
| Lemon button fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, every 4-7 days | Pet-safe |
| Lemon Button Fern | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, often every 5-7 days | Pet-safe |
| Lemon-scented Aerangis | Medium indirect light (a couple of metres from a window) | Water when roots begin to appear silvery-grey (indicating dryness), roughly every 5-8 days in summer and every 10-14 days in cooler months | Pet-safe |
| Lemon-Scented Ginger | Bright indirect light (just back from a sunny window) | Evenly moist during the growing season; almost dry during winter dormancy. | Mildly toxic to pets |
| Leopard Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Leopard Plant 'Desdemona' | Medium indirect light (a couple of metres from a window) | Every 3-5 days in warm weather; keep soil consistently moist or wet | Mildly toxic to pets |
| Leopard Plant 'The Rocket' | Medium indirect light (a couple of metres from a window) | Every 3-5 days or more frequently in warm weather; soil should remain consistently moist | Mildly toxic to pets |
| Leopoldina Earth Star | Bright indirect light (just back from a sunny window) | Water when top 2 cm of soil dries, roughly every 7-10 days | Pet-safe |
| Lepanthes telipogoniflora | Medium indirect light (a couple of metres from a window) | Keep roots constantly moist but never sodden, misting or watering daily | Mildly toxic to pets |
| Lepidozamia Peroffskyana | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-12 days in growth, less in winter | Toxic to pets |
| Lepismium Bolivianum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| Lepismium cruciforme | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Mildly toxic to pets |
| Leslie Bird's Nest Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Lesser Begonia | Bright indirect light (just back from a sunny window) | Every 5–7 days in growth, every 10–14 days in winter | Toxic to pets |
| lesser bladderwort | Bright indirect light (just back from a sunny window) | Permanently submerged or floating in shallow standing water | Pet-safe |
| Lesser Periwinkle | Medium indirect light (a couple of metres from a window) | Weekly during establishment; largely self-sufficient in average rainfall climates | Toxic to pets |
| Lesser Petrocosmea | Medium indirect light (a couple of metres from a window) | Every 7–10 days in active growth; reduce significantly in winter | Pet-safe |
| Lesser Shell Ginger | Bright indirect light (just back from a sunny window) | 2–3 times per week in summer; reduce in cooler months | Mildly toxic to pets |
| Lesser Stitchwort | Bright indirect light (just back from a sunny window) | Moderate; keep soil consistently moist but never waterlogged | Mildly toxic to pets |
| Lesser Theriophonum | Bright indirect light (just back from a sunny window) | Regular watering during active monsoon-season growth; completely dry in dormancy | Toxic to pets |
| Levy's Huernia | Bright indirect light (just back from a sunny window) | Every 14–21 days during active growth (spring–autumn); once monthly or less in winter | Pet-safe |
| Libon's Quesnelia | Bright indirect light (just back from a sunny window) | Keep the central tank filled with fresh water at all times; refresh every 1-2 weeks to prevent stagnation | Pet-safe |
| Lichang Chirita | Bright indirect light (just back from a sunny window) | Every 10–14 days | Pet-safe |
| Licorice Fern | Bright indirect light (just back from a sunny window) | Keep evenly moist while in active growth (fall through spring); water when the surface just begins to dry | Pet-safe |
| Licorice plant | Bright indirect light (just back from a sunny window) | Every 7–14 days; allow top 2–3 cm to dry | Pet-safe |
| Licuala Peltata | Bright indirect light (just back from a sunny window) | Keep evenly moist; water as the top 2-3 cm of soil dries | Mildly toxic to pets |
| Licuala Spinosa | Bright indirect light (just back from a sunny window) | Keep consistently moist; water when the top 2-3 cm of soil begins to dry | Mildly toxic to pets |
| Lifelong Saxifrage | Bright indirect light (just back from a sunny window) | Water moderately; allow the top 2–3 cm of soil to dry before watering. | Pet-safe |
| Light Prince Goldfish Plant | Bright indirect light (just back from a sunny window) | Every 5–7 days in spring and summer; every 10–14 days in autumn and winter | Pet-safe |
| Light Yellow Shell Ginger | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season | Mildly toxic to pets |
| Lightning jewel orchid | Bright indirect light (just back from a sunny window) | Keep lightly and evenly moist — never bone dry, never soggy | Mildly toxic to pets |
| Lilac Sage | Bright indirect light (just back from a sunny window) | Water when the top 5 cm of soil is dry | Pet-safe |
| Lilafee Epimedium | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly weekly | Mildly toxic to pets |
| Liliana's Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Lily Magnolia | Bright indirect light (just back from a sunny window) | Weekly during the growing season; reduce in autumn and winter | Pet-safe |
| Lilyturf-like Primulina | Medium indirect light (a couple of metres from a window) | Every 10–14 days in active growth; every 3–4 weeks in winter | Mildly toxic to pets |
| Lime Rickey Heuchera | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, about weekly | Pet-safe |
| Limestone Oak Fern | Bright indirect light (just back from a sunny window) | Keep moist but never waterlogged; water when the top 2 cm dries, roughly weekly in dry spells | Mildly toxic to pets |
| Limnophila aquatica | Bright indirect light (just back from a sunny window) | Permanently submerged; keep tank topped up and perform 25-50% water changes weekly | Mildly toxic to pets |
| Limnophila aromatica | Bright indirect light (just back from a sunny window) | Submerged form kept fully underwater; emersed form kept in waterlogged soil or shallow standing water | Mildly toxic to pets |
| Limnophila sessiliflora | Bright indirect light (just back from a sunny window) | Grown submersed; do a 30-50% aquarium water change weekly | Mildly toxic to pets |
| Linden-Leaf Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days (allow soil to partially dry) | Pet-safe |
| Linden's Canistrum | Bright indirect light (just back from a sunny window) | Keep the central tank filled with fresh water; water the root zone when the top 2-3 cm is dry, roughly every 7-10 days | Pet-safe |
| Lindley's Barkeria | Bright indirect light (just back from a sunny window) | Freely every 5-7 days in active growth; almost completely dry (once every 3-4 weeks) from leaf drop until new growth emerges | Pet-safe |
| Lined Sinningia | Bright indirect light (just back from a sunny window) | Every 7–10 days in growth; very sparingly during dormancy | Mildly toxic to pets |
| Lion's Angraecum | Bright indirect light (just back from a sunny window) | Every 2–4 days in summer, every 7–10 days in winter | Pet-safe |
| Lion's Angraecum | Bright indirect light (just back from a sunny window) | When roots are silvery and the medium approaches dryness, roughly every 7-10 days in summer | Pet-safe |
| Lipstick Palm | Bright indirect light (just back from a sunny window) | Keep soil consistently moist — check every 3-4 days; water whenever the surface begins to dry | Pet-safe |
| Lipstick Plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm is dry, roughly every 7-10 days in growth | Pet-safe |
| Lipstick Plant 'Mona Lisa' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Lipstick Vine | Bright indirect light (just back from a sunny window) | When top 2–3 cm of compost feel dry | Pet-safe |
| Lithops Julii | Bright indirect light (just back from a sunny window) | During spring and autumn growth only, roughly every 2-3 weeks; none in summer or winter | Pet-safe |
| Lithops Optica 'Rubra' | Bright indirect light (just back from a sunny window) | Sparingly in spring and autumn, every 2-3 weeks; withhold entirely in summer and winter | Pet-safe |
| Lithops Salicola | Bright indirect light (just back from a sunny window) | Only during active growth (autumn and spring), roughly every 2-3 weeks; none in summer or deep winter | Pet-safe |
| Little Calyx Aechmea | Bright indirect light (just back from a sunny window) | Every 7–10 days in growing season | Pet-safe |
| Little Hard Fern | Medium indirect light (a couple of metres from a window) | 2-3 times per week in the growing season; less often in winter | Pet-safe |
| Little Heath pieris | Bright indirect light (just back from a sunny window) | Weekly; maintain consistent moisture | Toxic to pets |
| Little Leather Lepanthes | Medium indirect light (a couple of metres from a window) | Daily or every 2 days; keep roots evenly moist | Pet-safe |
| Little One Temple Bells | Bright indirect light (just back from a sunny window) | Every 5–7 days while growing; withhold completely during dormancy | Pet-safe |
| Little Sweet Betsy | Medium indirect light (a couple of metres from a window) | Consistently moist from emergence through early summer; reduced in summer dormancy | Mildly toxic to pets |
| Livistona Decipiens | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Livistona Rotundifolia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Llano-Carti Road Syngonium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in summer | Toxic to pets |
| Lobb's Bulbophyllum | Medium indirect light (a couple of metres from a window) | Keep evenly moist in growth; water every 3-5 days | Pet-safe |
| Lobb's Bulbophyllum | Bright indirect light (just back from a sunny window) | When the top of the medium or slab begins to dry, approximately every 4-7 days; reduce slightly in winter | Pet-safe |
| Lobb's Ixora | Bright indirect light (just back from a sunny window) | Every 2-3 days in summer, weekly in cooler months | Mildly toxic to pets |
| Lobed Tickseed | Bright indirect light (just back from a sunny window) | Low to moderate; drought-tolerant but benefits from occasional watering | Pet-safe |
| Lobster Claw Heliconia | Bright indirect light (just back from a sunny window) | Every 5–7 days; maintain consistently moist soil | Mildly toxic to pets |
| Lobster Flower | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in summer; monthly or less in winter | Pet-safe |
| Log Fern | Medium indirect light (a couple of metres from a window) | Every 3–5 days; soil should remain consistently moist to occasionally wet | Mildly toxic to pets |
| London Pride | Medium indirect light (a couple of metres from a window) | Every 5–7 days in the growing season; less in winter | Pet-safe |
| London Pride | Medium indirect light (a couple of metres from a window) | Weekly during dry spells; little additional watering needed in temperate climates | Pet-safe |
| Long Spider Orchid | Bright indirect light (just back from a sunny window) | Every 3–4 days in active growth; every 2–3 weeks in winter | Pet-safe |
| Long-feathered Aponogeton | Medium indirect light (a couple of metres from a window) | Permanently submerged; weekly 25–30% water changes | Pet-safe |
| Long-flower Cirrhopetalum | Medium indirect light (a couple of metres from a window) | Every 6-8 days during growth; every 10-14 days in cooler or slower growth periods | Pet-safe |
| Long-Flowered Boesenbergia | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry during the growing season, approximately every 7-10 days; minimal water in dormancy | Mildly toxic to pets |
| Long-Flowered Bulbophyllum | Bright indirect light (just back from a sunny window) | Every 3–5 days in active growth (late spring to autumn); reduced in autumn and winter | Pet-safe |
| Long-Haired Zygopetalum | Bright indirect light (just back from a sunny window) | Every 3–4 days in growth, reduce to weekly in winter | Pet-safe |
| Long-Horned Ginger Lily | Bright indirect light (just back from a sunny window) | Water frequently during active growth, allowing the medium to drain thoroughly after each watering; reduce in cooler months | Pet-safe |
| Long-leaf Parlor Palm | Medium indirect light (a couple of metres from a window) | Every 7–10 days in the growing season; reduce to every 10–14 days in winter | Pet-safe |
| Long-leaf Parlour Palm | Medium indirect light (a couple of metres from a window) | Every 10–14 days in summer, every 2–3 weeks in winter | Pet-safe |
| Long-Leaf Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season, monthly in winter | Pet-safe |
| Long-Petalled Lewisia | Bright indirect light (just back from a sunny window) | Moderate in spring; almost dry in summer dormancy | Mildly toxic to pets |
| Long-Spurred Violet | Medium indirect light (a couple of metres from a window) | Regular; keep soil evenly moist | Pet-safe |
| Long-stalk Goldfish Plant | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry | Pet-safe |
| Long-Stalked Bladderwort | Bright indirect light (just back from a sunny window) | Keep substrate constantly wet; place pot in 1–3 cm of water in a saucer year-round | Mildly toxic to pets |
| Long-Stalked Pothos | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Long-stalked Sinningia | Bright indirect light (just back from a sunny window) | Every 7–10 days in growth; reduce slightly during rest period | Mildly toxic to pets |
| Long-stalked Spiderwort | Medium indirect light (a couple of metres from a window) | Weekly during active growth; reduce after summer die-back | Mildly toxic to pets |
| Long-tailed Masdevallia | Medium indirect light (a couple of metres from a window) | Daily in warm months; every 1-2 days in cool months — medium must not dry out between waterings | Pet-safe |
| Lonicera periclymenum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil dries, roughly every 5-10 days while establishing | Mildly toxic to pets |
| Lonicera periclymenum 'Serotina' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil dries, roughly every 5-10 days while establishing | Mildly toxic to pets |
| Looking Glass Begonia | Bright indirect light (just back from a sunny window) | Every 7–10 days in growing season, less in winter | Toxic to pets |
| Loose Aichryson | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in spring and summer; every 4–6 weeks in winter | Mildly toxic to pets |
| Loose-flowered Monanthes | Bright indirect light (just back from a sunny window) | Every 2–4 weeks in spring and summer; every 4–6 weeks or less in winter | Mildly toxic to pets |
| Lopsided Begonia | Bright indirect light (just back from a sunny window) | Every 6–8 days during active growth, reduced to every 12–14 days in winter | Toxic to pets |
| Loranthus-leaf Pleurothallis | Medium indirect light (a couple of metres from a window) | Every 2-3 days; keep evenly moist | Pet-safe |
| Lossow's Jensenobotrya | Bright indirect light (just back from a sunny window) | Water sparingly year-round, every 2–3 weeks | Toxic to pets |
| Lotax Dragon Orchid | Medium indirect light (a couple of metres from a window) | Every 2–3 days; never fully dry | Pet-safe |
| Loulu Palm | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-14 days | Pet-safe |
| Low's Cymbidium | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; reduce in winter | Pet-safe |
| Low's Cymbidium | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of the compost is dry, roughly every 5-7 days in active growth | Pet-safe |
| Low's Pitcher Plant | Bright indirect light (just back from a sunny window) | Regularly — keep medium evenly moist at all times | Mildly toxic to pets |
| Lowii Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep mix moist, watering every few days; never let it dry out or stand flooded | Pet-safe |
| Lowland Brittle Fern | Medium indirect light (a couple of metres from a window) | Moderate — keep evenly moist, allowing the surface to just dry between waterings | Mildly toxic to pets |
| Loxostigma griffithii | Medium indirect light (a couple of metres from a window) | When the surface begins to dry, roughly every 4-6 days in growth | Mildly toxic to pets |
| lucent scindapsus | Bright indirect light (just back from a sunny window) | Every 7–10 days in growing season; every 14 days in winter | Toxic to pets |
| Lucky bamboo | Medium indirect light (a couple of metres from a window) | Change water every 1-2 weeks if grown hydroponically | Toxic to pets |
| Ludwigia arcuata | Bright indirect light (just back from a sunny window) | Grown submersed; perform a 30-50% aquarium water change weekly | Mildly toxic to pets |
| Ludwigia brevipes | Bright indirect light (just back from a sunny window) | Grown submersed; do a 30-50% aquarium water change weekly | Mildly toxic to pets |
| Ludwigia glandulosa | Bright indirect light (just back from a sunny window) | Grown submersed; do a 30-50% aquarium water change weekly | Mildly toxic to pets |
| Ludwigia palustris | Bright indirect light (just back from a sunny window) | Kept fully submersed or in saturated substrate; in aquaria do a 30-50% water change weekly | Mildly toxic to pets |
| Ludwigia repens | Bright indirect light (just back from a sunny window) | Submerged permanently; 30-50% aquarium water changes weekly | Mildly toxic to pets |
| Lugard's Monadenium | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 10-14 days in summer and every 3-4 weeks in winter | Toxic to pets |
| Lund's Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Lungling Primulina | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; reduce to every 3–4 weeks in winter | Mildly toxic to pets |
| Lungwort | Medium indirect light (a couple of metres from a window) | Twice weekly in dry spells; keep soil consistently moist | Mildly toxic to pets |
| Lungwort 'Bertram Anderson' | Medium indirect light (a couple of metres from a window) | Every 7-10 days; somewhat more drought-tolerant than other pulmonarias but still prefers consistent moisture | Pet-safe |
| Lungwort 'Mrs Moon' | Medium indirect light (a couple of metres from a window) | Every 5-7 days in the growing season; keep soil moist but not waterlogged | Pet-safe |
| Luxurians Anthurium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (roughly the top 20-35%) of the mix dries out | Toxic to pets |
| Luxuriant Bleeding Heart | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly weekly | Toxic to pets |
| Luzon Begonia | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry | Toxic to pets |
| Luzon Vanda | Bright indirect light (just back from a sunny window) | Daily to every 2 days in active growth; reduce slightly in cooler months | Pet-safe |
| Ly's Wax Plant | Medium indirect light (a couple of metres from a window) | Every 7–10 days in summer, every 14–21 days in winter | Pet-safe |
| Lycaste aromatica | Bright indirect light (just back from a sunny window) | Every 4-6 days while in leaf; sparingly once leaves drop | Pet-safe |
| Lycaste cruenta | Bright indirect light (just back from a sunny window) | Water freely 2-3 times weekly in summer growth; withhold almost entirely during winter dormancy | Pet-safe |
| Lycaste deppei | Bright indirect light (just back from a sunny window) | Water generously 2-3 times weekly through summer; keep nearly dry through winter dormancy | Pet-safe |
| Lycaste skinneri | Bright indirect light (just back from a sunny window) | Every 5-7 days in active growth; reduce sharply after leaf drop, roughly every 2-3 weeks in winter rest | Pet-safe |
| Lydia's Window Plant | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in the growing season (September–March in the Northern Hemisphere); essentially none in summer | Mildly toxic to pets |
| Lysimachia nummularia | Medium indirect light (a couple of metres from a window) | Keep consistently moist; water whenever the surface begins to dry | Mildly toxic to pets |
| Lysimachia nummularia 'Aurea' | Medium indirect light (a couple of metres from a window) | Keep consistently moist; water whenever the surface starts to dry | Mildly toxic to pets |
| Macarthur Palm | Medium indirect light (a couple of metres from a window) | Every 5–7 days during growing season; reduce in cooler months | Pet-safe |
| Macdougall's Begonia | Bright indirect light (just back from a sunny window) | When the top 2–3 cm of soil is dry | Toxic to pets |
| MacGillivray's Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–10 days in summer, very sparingly in winter | Pet-safe |
| Macho Fern | Medium indirect light (a couple of metres from a window) | Every 2–4 days in summer; every 5–7 days in winter | Pet-safe |
| Macho Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, often every 4-7 days | Pet-safe |
| Mackay's Zygopetalum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is nearly dry, roughly every 5-7 days | Pet-safe |
| Mackay's Zygopetalum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of the mix is dry, roughly every 7-10 days in summer | Pet-safe |
| Madagascar Feather Palm | Medium indirect light (a couple of metres from a window) | Every 5–7 days in warm conditions; every 10–14 days in cooler periods | Pet-safe |
| Madagascar Jasmine | Bright indirect light (just back from a sunny window) | When the top 2-3cm of soil starts to dry (spring-summer); sparingly in winter | Pet-safe |
| Madagascar Lace Plant | Medium indirect light (a couple of metres from a window) | Fully submerged aquatic; keep in clean aquarium water year-round with a mandatory dormancy period | Pet-safe |
| Madison's Matucana | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, every 10-14 days in summer | Pet-safe |
| Magdalene Angraecum | Bright indirect light (just back from a sunny window) | Regular watering spring–autumn; reduce markedly in winter | Pet-safe |
| Magdalene's Angraecum | Bright indirect light (just back from a sunny window) | Every 5-7 days in active growth; reduce to every 14-21 days in winter | Pet-safe |
| magic star stromanthe | Medium indirect light (a couple of metres from a window) | Every 5–7 days in growing season; every 10–14 days in winter | Pet-safe |
| Magnificent Columnea | Bright indirect light (just back from a sunny window) | Every 4–7 days during active growth; every 10–14 days in winter | Pet-safe |
| Magnificent Homalomena | Medium indirect light (a couple of metres from a window) | Every 10–14 days in growing season; every 14–21 days in winter | Toxic to pets |
| Magnificent Inula | Bright indirect light (just back from a sunny window) | 2-3 times per week; tolerates moist to wet conditions | Pet-safe |
| Magnolia wilsonii | Bright indirect light (just back from a sunny window) | Weekly while establishing and during dry summer spells | Pet-safe |
| Magnolia-leaved Sage | Bright indirect light (just back from a sunny window) | Weekly in summer; every 2–3 weeks in winter | Mildly toxic to pets |
| Mahonia aquifolium Apollo | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, weekly through the first year then occasionally | Pet-safe |
| Mahonia Charity | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, weekly to establish then chiefly during droughts | Pet-safe |
| Mahonia Pinnacle | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, weekly through the first year then occasionally | Pet-safe |
| Mahonia repens | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, weekly to establish then rarely | Pet-safe |
| Mahonia Soft Caress | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, about weekly and more attentively than spinier mahonias | Pet-safe |
| Mahonia Winter Sun | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, weekly while establishing then only in dry spells | Pet-safe |
| Maidenhair fern | Medium indirect light (a couple of metres from a window) | Keep evenly moist — often every 2-3 days | Pet-safe |
| Maidenhair Spleenwort | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Maikai Orchid | Bright indirect light (just back from a sunny window) | Every 5–7 days; allow medium to dry out between waterings | Pet-safe |
| Maingay Torch Ginger | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, roughly every 5-7 days in warm months; every 12-14 days in cooler periods | Mildly toxic to pets |
| Maingay's Ginger | Medium indirect light (a couple of metres from a window) | 2–3 times per week | Mildly toxic to pets |
| Majestic Giants Pansy | Bright indirect light (just back from a sunny window) | When the top 1–2 cm of soil starts to dry, roughly every 3–5 days in mild weather | Mildly toxic to pets |
| Majesty palm | Bright indirect light (just back from a sunny window) | Keep soil consistently moist, every 4-7 days | Pet-safe |
| Malabar Tamarind | Bright indirect light (just back from a sunny window) | Water consistently to keep soil evenly moist; reduce slightly in cooler months. | Mildly toxic to pets |
| Malaysian Orchid | Bright indirect light (just back from a sunny window) | Every 7–10 days in growing season; every 14–21 days in winter | Mildly toxic to pets |
| Male Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Mildly toxic to pets |
| Maleberry | Bright indirect light (just back from a sunny window) | Regular to frequent; prefers moist to wet conditions | Toxic to pets |
| Mallow-leaved Pyrenacantha | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in the growing season (summer–autumn); very sparingly in winter | Mildly toxic to pets |
| Mammy Croton | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Mandaianum Blue Star Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Mandianum Blue Star Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, approximately every 7-10 days in the growing season | Pet-safe |
| Mangosteen | Bright indirect light (just back from a sunny window) | Keep soil constantly moist; water deeply and often, never letting it dry out | Mildly toxic to pets |
| Mangrove Date Palm | Bright indirect light (just back from a sunny window) | Keep consistently moist to wet; tolerates periodic flooding | Mildly toxic to pets |
| Manhattan Euonymus | Bright indirect light (just back from a sunny window) | Weekly while establishing, then every 10-14 days once mature | Toxic to pets |
| Manjula Pothos | Bright indirect light (just back from a sunny window) | When the top 25-50% of the mix is dry, roughly weekly | Toxic to pets |
| Mann's Culcasia | Medium indirect light (a couple of metres from a window) | Water when the top 2-3 cm of soil feels dry, roughly every 7-10 days | Toxic to pets |
| Many-Coloured Zygopetalum | Bright indirect light (just back from a sunny window) | When the surface is approaching dry, roughly every 4-6 days; more often if mounted | Pet-safe |
| Many-Flowered Air Plant | Bright indirect light (just back from a sunny window) | Mist 1–2 times per week, or a 20-minute soak every 1–2 weeks | Pet-safe |
| many-flowered cape primrose | Medium indirect light (a couple of metres from a window) | Every 10–14 days; allow soil to dry between waterings | Pet-safe |
| Many-Flowered Catopsis | Bright indirect light (just back from a sunny window) | Maintain water in the central cup; top up every 5-7 days | Pet-safe |
| Many-Flowered Epidendrum | Bright indirect light (just back from a sunny window) | 2–3 times per week during active growth; allow slight drying between waterings | Pet-safe |
| Many-flowered Fockea | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer; monthly or less in winter | Mildly toxic to pets |
| Many-flowered Masdevallia | Bright indirect light (just back from a sunny window) | Daily in warm weather; every 3–5 days in cooler months | Pet-safe |
| Many-Flowered Racinaea | Bright indirect light (just back from a sunny window) | Mist thoroughly 2-3 times per week; allow to dry slightly between mistings | Pet-safe |
| Many-Flowered Temple Bells | Medium indirect light (a couple of metres from a window) | Every 3–4 days in growth (March–October); twice a month during winter dormancy to keep rhizomes from desiccating | Mildly toxic to pets |
| Many-Leaved Monanthes | Bright indirect light (just back from a sunny window) | Every 1–2 weeks in the growing season; reduced in summer heat | Pet-safe |
| Many-pinnate Cycad | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer; every 3–5 weeks in winter | Toxic to pets |
| Many-Stemmed Air Plant | Bright indirect light (just back from a sunny window) | Soak for 30 minutes 2–3 times per week, or mist daily | Pet-safe |
| Mapu Fan Palm | Medium indirect light (a couple of metres from a window) | Every 5–7 days in summer; every 10–14 days in winter | Pet-safe |
| Maranta 'Fascinator' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Maranta 'Kim' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days in growth | Pet-safe |
| Maranta 'Lemon Lime' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm (about the top inch) of soil dries out, often roughly weekly | Pet-safe |
| Maranta 'Marisela' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days in growth | Pet-safe |
| Maranta 'Massangeana' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days in growth | Pet-safe |
| Maranta 'Silver Band' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days in growth | Pet-safe |
| Maranta Bicolor | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days in growth | Pet-safe |
| Maranta Cristata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Maranta leuconeura 'Mint' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days | Pet-safe |
| Maranta Leuconeura Green Beauty | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days | Pet-safe |
| Maranta-Leaved Globba | Bright indirect light (just back from a sunny window) | Once or twice a week during growing season; minimal in winter | Mildly toxic to pets |
| Marble Bromeliad | Bright indirect light (just back from a sunny window) | Refresh central cup weekly; water soil every 2–3 weeks | Pet-safe |
| Marble Earth Star | Medium indirect light (a couple of metres from a window) | Every 7–10 days | Pet-safe |
| Marble queen pothos | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Marbled Earth Star | Medium indirect light (a couple of metres from a window) | Water when top 2-3 cm of soil dries, roughly every 7-10 days | Pet-safe |
| Marcgrave's Nidularium | Medium indirect light (a couple of metres from a window) | Weekly cup refill; medium kept lightly moist | Pet-safe |
| Marcgravia rectiflora | Bright indirect light (just back from a sunny window) | Keep the root zone and mount consistently moist, watering or misting every 1-3 days | Mildly toxic to pets |
| Marcgravia sintenisii | Bright indirect light (just back from a sunny window) | Keep the mount and roots evenly moist, watering or misting every 1-3 days | Mildly toxic to pets |
| Margaret's Corkscrew Plant | Bright indirect light (just back from a sunny window) | Keep medium permanently moist to wet; tray method with 1 cm water during growing season | Pet-safe |
| Marginata Wood Rush | Medium indirect light (a couple of metres from a window) | Low to moderate; water during dry spells in the first growing season, then minimal supplemental water needed | Pet-safe |
| Margined Saxifrage | Bright indirect light (just back from a sunny window) | Every 7–10 days when growing; very sparingly in winter | Pet-safe |
| Marie's Davallia | Bright indirect light (just back from a sunny window) | Every 5–10 days in the growing season; minimal in winter dormancy | Pet-safe |
| Maries Doublefile Viburnum | Bright indirect light (just back from a sunny window) | When the top 5 cm of soil is dry, roughly every 7–10 days; more frequently during establishment and dry spells | Mildly toxic to pets |
| Marmalade Heuchera | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly weekly | Pet-safe |
| Marsh Fern | Bright indirect light (just back from a sunny window) | Keep wet to saturated at all times; never allow the soil to dry out | Mildly toxic to pets |
| Marshall's Thunia | Bright indirect light (just back from a sunny window) | Water freely every 2-4 days during vigorous summer growth; reduce sharply from autumn as leaves yellow, then keep almost dry (monthly) through winter dormancy | Pet-safe |
| Marsilea quadrifolia | Bright indirect light (just back from a sunny window) | Keep in wet mud or shallow water; never let it dry out | Mildly toxic to pets |
| Marson's Gymnocalycium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-12 days in summer; monthly or less in winter | Pet-safe |
| Martagon Lily | Medium indirect light (a couple of metres from a window) | When top 3–4 cm of soil feels dry | Toxic to pets |
| Martius's Brassavola | Bright indirect light (just back from a sunny window) | Every 5–7 days during growing season; reduce in winter after flowering | Pet-safe |
| Martius's Stanhopea | Bright indirect light (just back from a sunny window) | 3–5 times per week in summer; sharply reduce in winter | Pet-safe |
| Mary's Prosthechea | Bright indirect light (just back from a sunny window) | Every 5-7 days in growth; every 14-21 days in winter | Pet-safe |
| Masaguno Sasa | Medium indirect light (a couple of metres from a window) | 2-3 times per week in growing season; reduce to weekly in winter | Pet-safe |
| Masdevallia Angel Frost | Medium indirect light (a couple of metres from a window) | Keep evenly moist year-round, watering about every 2-4 days so the medium never dries out | Pet-safe |
| Masdevallia coccinea | Medium indirect light (a couple of metres from a window) | Keep evenly moist all year, watering about every 2-4 days so the medium never dries fully | Pet-safe |
| Masdevallia tovarensis | Medium indirect light (a couple of metres from a window) | Keep evenly moist throughout the year, watering roughly every 2-4 days so the medium stays damp | Pet-safe |
| Masdevallia veitchiana | Medium indirect light (a couple of metres from a window) | Keep roots evenly moist year-round; water roughly every 2-4 days so the mix never fully dries | Pet-safe |
| Masdevallia wageneriana | Medium indirect light (a couple of metres from a window) | Keep continuously moist; water or mist every 1-3 days as the tiny mass dries quickly | Pet-safe |
| Masked Twinspur | Bright indirect light (just back from a sunny window) | Water regularly to keep soil evenly moist | Mildly toxic to pets |
| Masterwort 'Ruby Wedding' | Medium indirect light (a couple of metres from a window) | Every 5-7 days in warm weather; reduce in cooler months when growth slows | Mildly toxic to pets |
| Masterwort 'Venice' | Medium indirect light (a couple of metres from a window) | Every 5-7 days; do not allow soil to dry out during active growth | Mildly toxic to pets |
| Maudiae Slipper Orchid | Medium indirect light (a couple of metres from a window) | When the top of the mix begins to dry, roughly every 5-7 days | Pet-safe |
| Maudiae-Type Slipper 'Black Jack' | Medium indirect light (a couple of metres from a window) | When the top of the mix is just starting to dry, roughly every 5-7 days | Mildly toxic to pets |
| Mauna Loa Peace Lily | Medium indirect light (a couple of metres from a window) | Every 7–10 days in the growing season; every 14 days in winter | Toxic to pets |
| Maxillaria picta | Medium indirect light (a couple of metres from a window) | Water when the surface dries, about every 4-7 days; reduce somewhat after flowering | Mildly toxic to pets |
| Maxillaria schunkeana | Medium indirect light (a couple of metres from a window) | Water when the surface of the medium approaches dryness, about every 4-6 days, keeping it lightly moist | Mildly toxic to pets |
| Maxillaria tenuifolia | Bright indirect light (just back from a sunny window) | When the medium is approaching dryness, roughly every 4-6 days in growth | Pet-safe |
| Maxillaria variabilis | Bright indirect light (just back from a sunny window) | When the medium nears dryness, about every 4-6 days in growth | Pet-safe |
| Maxima Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep mix moist, watering every few days; not standing in deep water | Pet-safe |
| Maze-Leaf Begonia | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil feels dry | Toxic to pets |
| Meadow Saxifrage | Bright indirect light (just back from a sunny window) | Every 5–7 days in spring; minimal watering needed from midsummer onward | Pet-safe |
| Meadow Vetchling | Bright indirect light (just back from a sunny window) | Moderate — keep consistently moist but well-drained | Mildly toxic to pets |
| Medinilla | Bright indirect light (just back from a sunny window) | Every 7–10 days in growing season; every 14–21 days in winter | Mildly toxic to pets |
| Medusa Habenaria | Bright indirect light (just back from a sunny window) | Keep evenly moist during active growth, roughly every 3-5 days | Pet-safe |
| Medusa Orchid | Medium indirect light (a couple of metres from a window) | Keep consistently moist; water every 2-4 days, more in heat | Pet-safe |
| Medusa's Cirrhopetalum | Medium indirect light (a couple of metres from a window) | Every 5-7 days during active growth; reduce to every 10-14 days in cooler months | Pet-safe |
| Meebold's Lagenandra | Medium indirect light (a couple of metres from a window) | Keep permanently waterlogged or submerged; substrate must never dry out | Toxic to pets |
| Megaskepasma erythrochlamys | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil dries, roughly every 3-5 days in heat | Mildly toxic to pets |
| Mejia's Masdevallia | Medium indirect light (a couple of metres from a window) | Water when the medium is approaching dryness, roughly every 1-2 days in active growth | Pet-safe |
| Melancholy Thistle | Bright indirect light (just back from a sunny window) | Moderate — keep soil moist | Mildly toxic to pets |
| Membrane-flowered Stelis | Medium indirect light (a couple of metres from a window) | Every 1–2 days; never allow roots to fully dry | Pet-safe |
| Mendoza Graptopetalum | Bright indirect light (just back from a sunny window) | When the soil is completely dry, roughly every 10-14 days in summer | Pet-safe |
| Merrill's Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–10 days in summer, every 14–21 days in winter | Pet-safe |
| Metallic Heliconia | Medium indirect light (a couple of metres from a window) | 2–3 times per week in warm conditions; once weekly in cooler periods | Mildly toxic to pets |
| Metallic Peperomia | Bright indirect light (just back from a sunny window) | Roughly every 1-2 weeks; when the top 2-3 cm (1 in) of soil is dry | Pet-safe |
| Metallica Palm | Medium indirect light (a couple of metres from a window) | Every 7–10 days in summer, every 14 days in winter | Pet-safe |
| Mexican Achimenes | Bright indirect light (just back from a sunny window) | Consistently moist throughout the growing season (spring–autumn); dry in winter dormancy | Pet-safe |
| Mexican Aechmea | Bright indirect light (just back from a sunny window) | Every 2–3 weeks (soil); refresh central tank monthly | Pet-safe |
| Mexican Butterwort | Bright indirect light (just back from a sunny window) | Keep moist spring-summer; ease off in winter | Mildly toxic to pets |
| Mexican Butterwort | Bright indirect light (just back from a sunny window) | Tray-water during growth; keep barely damp in winter | Mildly toxic to pets |
| Mexican Butterwort | Bright indirect light (just back from a sunny window) | Tray-water in summer; near-dry in winter | Mildly toxic to pets |
| Mexican Lily | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry during active growth, roughly every 7-10 days | Toxic to pets |
| Mexican Snowball | Bright indirect light (just back from a sunny window) | Every 2-3 weeks in spring/summer; roughly monthly in winter | Pet-safe |
| Mexican Tortoise Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days during the summer growing season; reduce to once a month or less in winter dormancy | Mildly toxic to pets |
| Mexican Tree Fern | Bright indirect light (just back from a sunny window) | 2-3 times per week; keep trunk moist | Pet-safe |
| Meyer's Cape Primrose | Bright indirect light (just back from a sunny window) | Every 10-14 days in growth; every 4-6 weeks in winter | Pet-safe |
| Micholitz's Cycad | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; once a month or less in winter | Toxic to pets |
| Micranthemum tweediei 'Monte Carlo' | Bright indirect light (just back from a sunny window) | Permanently submerged; 30-50% water change weekly | Mildly toxic to pets |
| Micro Earth Star | Medium indirect light (a couple of metres from a window) | Water when top 1-2 cm of soil dries, roughly every 5-8 days | Pet-safe |
| Microsorum punctatum | Bright indirect light (just back from a sunny window) | Water when the top 2-3 cm of mix feels dry, roughly every 5-9 days | Pet-safe |
| Middendorf Weigela | Bright indirect light (just back from a sunny window) | Every 7 days during dry periods; keep evenly moist but not waterlogged | Pet-safe |
| Mignonette Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; every 2–3 weeks in winter | Pet-safe |
| Mikania ternata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days in growth | Mildly toxic to pets |
| Milky Bellflower 'Prichard's Variety' | Bright indirect light (just back from a sunny window) | Once or twice a week in dry spells; regular moisture during flowering improves performance | Mildly toxic to pets |
| Milky Way Kousa Dogwood | Bright indirect light (just back from a sunny window) | Weekly while establishing; deep watering in summer drought | Pet-safe |
| Miller's Laelia | Bright indirect light (just back from a sunny window) | When the pot is almost completely dry, roughly every 7-14 days in summer | Pet-safe |
| Miltonia Orchid | Bright indirect light (just back from a sunny window) | Every 2-5 days in active growth; let medium approach dryness, never bone-dry | Pet-safe |
| Miltoniopsis 'Augres' | Medium indirect light (a couple of metres from a window) | Keep evenly moist; usually every 4-6 days | Pet-safe |
| Miltoniopsis 'Herralexandre' | Medium indirect light (a couple of metres from a window) | When the mix surface starts to dry, roughly every 4-6 days | Pet-safe |
| Miltoniopsis 'Red Tide' | Medium indirect light (a couple of metres from a window) | Keep the mix evenly moist; typically every 4-6 days | Pet-safe |
| Miltoniopsis phalaenopsis | Medium indirect light (a couple of metres from a window) | Every 3-5 days, keeping the mix lightly moist at all times | Pet-safe |
| Miltoniopsis roezlii | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water every 3-5 days, never letting the mix fully dry | Pet-safe |
| Ming aralia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Mildly toxic to pets |
| Mini Moth Orchid 'Sogo Vivien' | Bright indirect light (just back from a sunny window) | Roughly every 7-10 days, when the bark mix is nearly dry and roots turn silvery-grey | Pet-safe |
| Miniature African violet | Bright indirect light (just back from a sunny window) | Every 5–8 days | Pet-safe |
| Miniature Chusan Palm | Bright indirect light (just back from a sunny window) | Weekly in the growing season, reduced in winter | Pet-safe |
| Miniature Cone Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days during active growth (autumn–spring); completely dry through summer dormancy | Pet-safe |
| Miniature Coral Berry Bromeliad | Bright indirect light (just back from a sunny window) | Every 7–14 days | Pet-safe |
| Miniature Creeping Jenny | Medium indirect light (a couple of metres from a window) | Frequently; keep soil consistently moist | Mildly toxic to pets |
| Miniature Sinningia | Bright indirect light (just back from a sunny window) | Keep evenly, lightly moist at all times; check every few days | Pet-safe |
| Miniature Sugar Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in summer; every 14 days in winter | Pet-safe |
| Miniature Tree Fern | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is just drying, roughly every 4-7 days | Mildly toxic to pets |
| Miniature Tree Fern | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 5-7 days in summer | Pet-safe |
| Minnesota Trout Lily | Medium indirect light (a couple of metres from a window) | Moist throughout active growth (April–May); bone-dry conditions are fatal | Mildly toxic to pets |
| Minor Sun Pitcher | Bright indirect light (just back from a sunny window) | Water every 3-5 days to keep the substrate consistently moist; maintain partial pitcher fill with distilled water | Pet-safe |
| Mintleaf Spurflower | Bright indirect light (just back from a sunny window) | Every 7-10 days, allowing the top 2-3 cm of soil to dry between waterings | Mildly toxic to pets |
| Minute Masdevallia | Medium indirect light (a couple of metres from a window) | Every 2–3 days; keep medium consistently moist | Pet-safe |
| Miquel's Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer, every 3–4 weeks in winter | Pet-safe |
| Miracle Fruit | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top 1-2 cm of soil begins to dry, often every 2-4 days | Mildly toxic to pets |
| Miranda's Ceratozamia | Bright indirect light (just back from a sunny window) | Every 2–4 weeks | Toxic to pets |
| Miss Sharples Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 4–6 days; maintain consistent soil moisture | Pet-safe |
| Mistletoe Begonia | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry | Toxic to pets |
| Mistletoe cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in growth | Pet-safe |
| Moctezuma Butterwort | Bright indirect light (just back from a sunny window) | Tray-water in summer; near-dry in winter | Mildly toxic to pets |
| Modest Cape Primrose | Medium indirect light (a couple of metres from a window) | Every 7-10 days in growth; every 3-4 weeks in winter | Pet-safe |
| Mona Lisa Lipstick Plant | Bright indirect light (just back from a sunny window) | Every 7–10 days in active growth; every 14 days in cooler months | Pet-safe |
| Monarch of the East | Bright indirect light (just back from a sunny window) | Minimal until potted and in growth; then water when the top 2-3 cm of soil is dry | Toxic to pets |
| Mondo Grass | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Money Plant Spurflower | Bright indirect light (just back from a sunny window) | Water when the top 2 cm of compost feels dry, roughly every 5–8 days indoors | Pet-safe |
| Money tree | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, every 7-14 days | Pet-safe |
| Mongolian Linden | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 2 weeks in dry summers | Pet-safe |
| Monkey flower | Medium indirect light (a couple of metres from a window) | Every 2–3 days; more frequently in warm or windy weather | Pet-safe |
| Monkeyflower | Bright indirect light (just back from a sunny window) | Constantly moist to wet — water daily in dry spells | Mildly toxic to pets |
| Monosolenium tenerum | Medium indirect light (a couple of metres from a window) | Permanently submerged; 25-40% water change weekly | Mildly toxic to pets |
| Monster Scaphosepalum | Medium indirect light (a couple of metres from a window) | When the top of the medium just begins to dry, roughly every 3-5 days | Pet-safe |
| Monstera | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Monstera acacoyaguensis | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Monstera Acuminata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Monstera adansonii (Swiss cheese vine) | Bright indirect light (just back from a sunny window) | When the top 2-3 cm is dry, roughly every 7-10 days in growth | Toxic to pets |
| Monstera Adansonii Archipelago | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Toxic to pets |
| Monstera Adansonii Mint | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Toxic to pets |
| Monstera Adansonii Wide Form | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Monstera Aurea | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Monstera Costaricensis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Monstera Deliciosa Borsigiana | Bright indirect light (just back from a sunny window) | When the top 2-5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Monstera Deliciosa Mint Variegata | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Monstera Deliciosa Ronronensis | Bright indirect light (just back from a sunny window) | When the top 5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Monstera Deliciosa Sport | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Toxic to pets |
| Monstera Esqueleto | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Monstera Esqueleto Variegata | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Monstera Gracilis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Monstera Karstenianum Peru Variegata | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Monstera Laniata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Monstera Lechleriana | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Monstera Nigrescens | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Monstera obliqua | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top 2-3 cm of mix is dry | Toxic to pets |
| Monstera Obliqua Peru | Medium indirect light (a couple of metres from a window) | Keep evenly, lightly moist; check every 4-7 days | Toxic to pets |
| Monstera Peru | Bright indirect light (just back from a sunny window) | Every 7-12 days in spring/summer; every 14-21 days in winter | Toxic to pets |
| Monstera pinnatipartita | Bright indirect light (just back from a sunny window) | When the top 25-50% (roughly 2-3 inches) of the mix is dry | Toxic to pets |
| Monstera Pinnatipartita Variegata | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Monstera Punctulata | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Monstera Siltepecana | Bright indirect light (just back from a sunny window) | Roughly every 5-7 days in summer; less in winter | Toxic to pets |
| Monstera Spruceana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Monstera standleyana | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Monstera Standleyana Albo | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Toxic to pets |
| Monstera Standleyana Cobra | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Monstera Subpinnata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Monstera Tenuis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 6-9 days | Toxic to pets |
| Monstera Thai Constellation | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-12 days | Toxic to pets |
| Monstera Tuberculata | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Monstera Xanthospatha | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 5-8 days | Toxic to pets |
| Monstera-Like Rhaphidophora | Bright indirect light (just back from a sunny window) | When the top 3–4 cm of soil feels dry, roughly every 7–14 days depending on season | Toxic to pets |
| Montgomery Astilbe | Bright indirect light (just back from a sunny window) | Keep soil consistently moist to wet; water when the top 2-3 cm dries, roughly every 3-5 days in summer | Mildly toxic to pets |
| Moon Cactus | Bright indirect light (just back from a sunny window) | Only when the mix is fully dry, roughly every 10-14 days in summer and far less in winter | Pet-safe |
| Moon Cactus | Bright indirect light (just back from a sunny window) | Every 14–21 days in spring/summer; every 4–6 weeks in autumn; almost none in winter | Pet-safe |
| Moon Valley Pilea | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Moonlight Cactus | Bright indirect light (just back from a sunny window) | When the top few centimetres are dry, roughly weekly in summer and around monthly in winter | Pet-safe |
| Moons Chirita | Bright indirect light (just back from a sunny window) | Every 7–10 days | Pet-safe |
| Moonshadow Euonymus | Bright indirect light (just back from a sunny window) | Weekly while establishing, then every 10-14 days once mature | Toxic to pets |
| Moonstones | Bright indirect light (just back from a sunny window) | Every 2 to 3 weeks in active growth; roughly monthly or less in winter | Pet-safe |
| Moor Witch Purple Moor Grass | Bright indirect light (just back from a sunny window) | Moderate to frequent — prefers reliably moist soil; dislikes drought | Pet-safe |
| Moore's Blechnum | Medium indirect light (a couple of metres from a window) | Every 5–7 days in summer, every 10–14 days in winter | Pet-safe |
| Moore's Coelogyne | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; every 10–14 days in winter | Pet-safe |
| Moore's Coelogyne | Bright indirect light (just back from a sunny window) | Every 5-7 days in the growing season; every 14-21 days in winter | Pet-safe |
| Moore's Crinum | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in the growing season | Toxic to pets |
| Moore's Cycad | Bright indirect light (just back from a sunny window) | Water every 2–4 weeks during active growth, sparingly in winter | Toxic to pets |
| Moore's Macrozamia | Bright indirect light (just back from a sunny window) | Every 2–4 weeks | Toxic to pets |
| Mophead Hydrangea 'Cityline Paris' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, often 2-3 times weekly in summer heat | Toxic to pets |
| Morelia Miltonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of the mix feels barely moist, roughly every 6-8 days in summer | Pet-safe |
| Morell's Billbergia | Bright indirect light (just back from a sunny window) | Keep central cup filled; water substrate every 1-2 weeks | Pet-safe |
| Moretti's Bellflower | Bright indirect light (just back from a sunny window) | Low to moderate — water carefully during growth, keep dry in winter | Mildly toxic to pets |
| Morren's Catopsis | Medium indirect light (a couple of metres from a window) | Keep the central tank topped up; flush weekly; water soil lightly every 10-14 days | Pet-safe |
| Mosaic Bromeliad | Medium indirect light (a couple of metres from a window) | Top up the central urn weekly; water the potting mix every 2–3 weeks | Pet-safe |
| Mosaic Vase Plant | Medium indirect light (a couple of metres from a window) | Keep urn filled; water medium every 10–14 days | Pet-safe |
| Mosaic Vase Plant | Medium indirect light (a couple of metres from a window) | Keep the central vase (cup) filled with water at all times; refresh weekly | Pet-safe |
| Moser's Gymnocalycium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, approximately every 7-10 days in summer; every 4-6 weeks in winter | Pet-safe |
| Moses in the Cradle | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Moses-in-the-Cradle (Oyster Plant) | Bright indirect light (just back from a sunny window) | When the top 1-2 inches (2.5-5 cm) of soil dry out | Toxic to pets |
| Moss-dwelling Specklinia | Medium indirect light (a couple of metres from a window) | Daily misting if mounted; every 1–2 days if potted | Pet-safe |
| Moss-Leaf Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer, every 3–4 weeks in winter | Pet-safe |
| Mossy cassiope | Bright indirect light (just back from a sunny window) | Consistently moist; never allow soil to dry out | Pet-safe |
| Mossy Porroglossum | Medium indirect light (a couple of metres from a window) | Daily to every other day; never allow the medium to dry out | Pet-safe |
| Mossy Saxifrage | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; reduce in summer heat and winter | Pet-safe |
| Moth orchid | Bright indirect light (just back from a sunny window) | Roughly weekly; let the bark approach dryness first | Pet-safe |
| Moth Orchid | Bright indirect light (just back from a sunny window) | When the bark mix is nearly dry, typically every 7-10 days | Pet-safe |
| Mother Fern | Medium indirect light (a couple of metres from a window) | Every 5–7 days; keep evenly moist | Pet-safe |
| Mother Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 4-6 days | Pet-safe |
| Mother of thousands | Bright indirect light (just back from a sunny window) | When the top 5 cm (2 in) of soil is dry, roughly every 1-2 weeks in growth | Toxic to pets |
| Mother of Thousands | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 10-14 days in summer | Toxic to pets |
| Mount Lewis King Palm | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Mountain Bellwort | Medium indirect light (a couple of metres from a window) | Once per week during the growing season; less frequent than other bellworts owing to this species' preference for drier conditions. | Mildly toxic to pets |
| Mountain Bluebells | Bright indirect light (just back from a sunny window) | Water deeply 2–3 times per week; does not tolerate drying out | Pet-safe |
| Mountain Fern | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water when the top 2-3 cm dry out, roughly weekly in dry weather | Mildly toxic to pets |
| Mountain Fetterbush | Bright indirect light (just back from a sunny window) | Water every 7–14 days; once established it is relatively drought-tolerant for a Pieris | Toxic to pets |
| Mountain Fire pieris | Bright indirect light (just back from a sunny window) | Weekly to bi-weekly depending on conditions | Toxic to pets |
| Mountain Hydrangea 'Bluebird' | Bright indirect light (just back from a sunny window) | About weekly, roughly 2.5 cm (1 inch) per week; water when the top 3-5 cm of soil is dry | Toxic to pets |
| mountain laurel | Bright indirect light (just back from a sunny window) | Weekly during establishment; water during dry spells once established | Toxic to pets |
| Mountain Laurel 'Olympic Fire' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry; keep evenly moist, especially in the first years | Toxic to pets |
| Mountain Male Fern | Medium indirect light (a couple of metres from a window) | Every 7–14 days during the growing season; once monthly or less in winter | Mildly toxic to pets |
| Mountain Pansy | Bright indirect light (just back from a sunny window) | Water sparingly; allow soil to partially dry between waterings. | Pet-safe |
| Mountain Phlox | Medium indirect light (a couple of metres from a window) | Weekly; allow the top 2–3 cm of soil to dry between waterings | Pet-safe |
| Mountain Pieris | Bright indirect light (just back from a sunny window) | Keep evenly moist; water weekly in dry weather and never allow drought stress | Toxic to pets |
| Mountain Rimu | Bright indirect light (just back from a sunny window) | Every 7-14 days; keep soil consistently moist, especially in summer | Mildly toxic to pets |
| Mountain Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–10 days in the growing season, every 14–21 days in winter | Pet-safe |
| Mouse Head Plant | Bright indirect light (just back from a sunny window) | Every 2–3 weeks year-round, with a brief reduction after flowering | Mildly toxic to pets |
| Mouse-Tail Air Plant | Bright indirect light (just back from a sunny window) | Mist or soak every 10–14 days | Pet-safe |
| Muir's Rhinephyllum | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in spring–summer; minimal in winter | Pet-safe |
| Mulberry Wine prickly heath | Bright indirect light (just back from a sunny window) | Regular; keep consistently moist | Toxic to pets |
| Mule-Ear Oncidium | Bright indirect light (just back from a sunny window) | When roots approach dry, about every 4-6 days year-round | Pet-safe |
| Mulu Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep medium evenly moist; water every 2–3 days | Mildly toxic to pets |
| Mundu | Bright indirect light (just back from a sunny window) | Water regularly to maintain consistent moisture; avoid prolonged dry spells. | Mildly toxic to pets |
| Mutton Bird Sedge | Bright indirect light (just back from a sunny window) | Moderate to regular; do not allow to dry out in the growing season | Pet-safe |
| Myanmar Purple Ginger | Bright indirect light (just back from a sunny window) | Regular watering to maintain even soil moisture through the growing season. | Mildly toxic to pets |
| Myriophyllum aquaticum | Bright indirect light (just back from a sunny window) | Permanently in water; keep ponds topped up and stable | Mildly toxic to pets |
| Mysore trumpetvine | Bright indirect light (just back from a sunny window) | Regularly during growth; reduced in winter | Pet-safe |
| Mystacid Aerangis | Bright indirect light (just back from a sunny window) | When roots appear silvery-white and the top of the medium is dry, roughly every 5-8 days | Pet-safe |
| Mystery Gardenia | Bright indirect light (just back from a sunny window) | Every 5–7 days; adjust by season and pot size | Mildly toxic to pets |
| Nageia nagi | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Mildly toxic to pets |
| Nahanni Fern | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top 2 cm of soil begins to dry, roughly weekly in dry spells | Mildly toxic to pets |
| Naked Bamboo | Medium indirect light (a couple of metres from a window) | 2-3 times per week in growing season; reduce in winter | Pet-safe |
| Naked Crocus | Bright indirect light (just back from a sunny window) | Low to moderate — prefers moisture during active growth; dry in summer | Mildly toxic to pets |
| Nandina Harbour Dwarf | Bright indirect light (just back from a sunny window) | Weekly while establishing, then every 10-14 days once mature | Toxic to pets |
| Nandina Liriope | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| nannyberry | Bright indirect light (just back from a sunny window) | Weekly for first two seasons; infrequently once established | Mildly toxic to pets |
| Naomi Hakone Grass | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist; water 1-2 times weekly, more in heat | Mildly toxic to pets |
| Naranjilla | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 3-5 days in active growth | Mildly toxic to pets |
| Narrow Holly Fern | Medium indirect light (a couple of metres from a window) | Every 7–14 days; drought-tolerant once established | Pet-safe |
| Narrow-Leaf Fountain Bamboo | Medium indirect light (a couple of metres from a window) | 2-3 times per week in warm months; weekly in cool weather | Pet-safe |
| Narrow-leaf Zamia | Bright indirect light (just back from a sunny window) | Every 2–3 weeks | Toxic to pets |
| Narrow-Leafed Arrowhead Vine | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in summer and every 10-14 days in winter | Toxic to pets |
| Narrow-leaved Everlasting Pea | Bright indirect light (just back from a sunny window) | Low to moderate — water during prolonged drought only once established | Mildly toxic to pets |
| Narrow-leaved Fockea | Bright indirect light (just back from a sunny window) | Every 10–14 days in growing season; once a month or less in winter | Mildly toxic to pets |
| Narrow-leaved Gentian | Bright indirect light (just back from a sunny window) | Moderate; allow the top centimetre of soil to dry between waterings | Pet-safe |
| Narrow-leaved Glade Fern | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist; water when the top 2 cm begin to dry, roughly every 5-7 days in dry weather | Mildly toxic to pets |
| Narrow-Leaved Kaempferia | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil feels dry, roughly every 6-8 days in the growing season; cease or minimise during winter dormancy | Mildly toxic to pets |
| Narrow-leaved Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep substrate evenly moist year-round | Mildly toxic to pets |
| Natai Palm | Medium indirect light (a couple of metres from a window) | Every 5–7 days in warm conditions; every 14 days in cooler periods | Pet-safe |
| Natal Grass Cycad | Medium indirect light (a couple of metres from a window) | Water when the top 2–3 cm of soil is dry, typically every 1–2 weeks in summer | Toxic to pets |
| Natal Lily | Bright indirect light (just back from a sunny window) | Every 7–10 days in spring and summer; sparingly (every 3–4 weeks) during the winter rest | Toxic to pets |
| Nathalie's Ramonda | Medium indirect light (a couple of metres from a window) | Once or twice a week in the growing season; minimal in winter | Pet-safe |
| Naumann's Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–14 days in growing season; less in winter | Pet-safe |
| Nautilocalyx lynchii | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 4-6 days | Mildly toxic to pets |
| Navelwort | Medium indirect light (a couple of metres from a window) | Regularly in autumn–spring growing period; very little in summer dormancy | Mildly toxic to pets |
| Neat Bulbophyllum | Medium indirect light (a couple of metres from a window) | Every 4–6 days; mounted plants may need more frequent misting | Pet-safe |
| Neblina Sun Pitcher | Bright indirect light (just back from a sunny window) | Keep medium consistently moist; flush pitchers with pure water weekly | Pet-safe |
| Nedda's Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–14 days in growing season; reduce to every 3–4 weeks in winter | Pet-safe |
| Needle Palm | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, about every 5-7 days while actively growing | Mildly toxic to pets |
| Neglected Air Plant | Bright indirect light (just back from a sunny window) | Soak for 30 minutes to 2 hours once a week | Pet-safe |
| Neglected Ginger | Bright indirect light (just back from a sunny window) | Regular watering to keep soil evenly moist during the growing season. | Mildly toxic to pets |
| Neli's Rhombophyllum | Bright indirect light (just back from a sunny window) | Every 3–4 weeks in growing season (autumn–spring); withhold almost entirely in summer | Mildly toxic to pets |
| Neli's Tongue Plant | Bright indirect light (just back from a sunny window) | Every 2–4 weeks in autumn and spring growing seasons; near-dry in summer dormancy and restricted in winter | Mildly toxic to pets |
| Nematanthus 'Cheerio' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| Nematanthus 'Freckles' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| Nematanthus 'Tropicana' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Nematanthus wettsteinii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| Neon pothos | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Neoregelia 'Charm' | Bright indirect light (just back from a sunny window) | Keep the central cup filled; flush and refill every 1-2 weeks | Pet-safe |
| Neoregelia 'Fireball' | Bright indirect light (just back from a sunny window) | Keep the central cup filled; water the mix when the top 2-3 cm is dry | Pet-safe |
| Neoregelia 'Painted Lady' | Bright indirect light (just back from a sunny window) | Keep the central cup filled; refresh weekly and water mix when top 2-3 cm dry | Pet-safe |
| Neoregelia ampullacea | Bright indirect light (just back from a sunny window) | Keep the small cups topped up; mist or dip mounted plants every few days | Pet-safe |
| Neoregelia concentrica | Bright indirect light (just back from a sunny window) | Keep the broad central cup filled; refresh weekly and water mix when top few cm are dry | Pet-safe |
| Neoregelia cruenta | Bright indirect light (just back from a sunny window) | Keep the central cup filled; refresh weekly and water the mix when the top few cm dry out | Pet-safe |
| Neoregelia spectabilis | Bright indirect light (just back from a sunny window) | Keep the central cup topped up; refresh it weekly and water the mix when the top 2-3 cm is dry | Pet-safe |
| Nepenthes 'Miranda' | Bright indirect light (just back from a sunny window) | Keep media constantly moist; water every 2-4 days with mineral-free water | Pet-safe |
| Nepenthes × hookeriana | Bright indirect light (just back from a sunny window) | Keep media evenly moist, watering about every 1-2 days in warmth | Mildly toxic to pets |
| Nepenthes ampullaria | Bright indirect light (just back from a sunny window) | Keep the medium constantly moist, watering every 2-3 days; it likes more water than highland species | Pet-safe |
| Nepenthes clipeata | Bright indirect light (just back from a sunny window) | Keep media constantly moist, watering roughly every 1-3 days so it never dries out | Mildly toxic to pets |
| Nepenthes copelandii | Bright indirect light (just back from a sunny window) | Keep evenly moist; water from above every 2-4 days, never leaving it standing in water | Mildly toxic to pets |
| Nepenthes dubia | Bright indirect light (just back from a sunny window) | Keep media evenly moist but never sodden; water from the top every 2-4 days | Mildly toxic to pets |
| Nepenthes edwardsiana | Bright indirect light (just back from a sunny window) | Keep media constantly moist, watering roughly every 1-2 days | Mildly toxic to pets |
| Nepenthes hamata | Bright indirect light (just back from a sunny window) | Keep media moist; water every 2-3 days | Mildly toxic to pets |
| Nepenthes inermis | Bright indirect light (just back from a sunny window) | Keep media evenly moist, never waterlogged; water from the top every 2-4 days | Mildly toxic to pets |
| Nepenthes macrophylla | Bright indirect light (just back from a sunny window) | Keep the mix evenly moist, watering about every 1-3 days | Mildly toxic to pets |
| Nepenthes merrilliana | Bright indirect light (just back from a sunny window) | Keep the mix lightly moist at all times; water from the top every 2-4 days, never standing | Mildly toxic to pets |
| Nepenthes mikei | Bright indirect light (just back from a sunny window) | Keep media evenly moist but never sodden; water from the top every 2-4 days | Mildly toxic to pets |
| Nepenthes Miranda | Bright indirect light (just back from a sunny window) | Keep media damp; water every 2-4 days | Mildly toxic to pets |
| Nepenthes nebularum | Bright indirect light (just back from a sunny window) | Keep media constantly moist, watering roughly every 1-2 days | Mildly toxic to pets |
| Nepenthes northiana | Bright indirect light (just back from a sunny window) | Keep media evenly moist, watering about every 1-3 days | Mildly toxic to pets |
| Nepenthes rafflesiana | Bright indirect light (just back from a sunny window) | Keep media constantly moist; water every 2-4 days | Mildly toxic to pets |
| Nepenthes rajah | Bright indirect light (just back from a sunny window) | Keep the medium evenly moist at all times, watering every 2-4 days so it never dries out | Pet-safe |
| Nepenthes robcantleyi | Bright indirect light (just back from a sunny window) | Keep media moist; water every 2-3 days | Mildly toxic to pets |
| Nepenthes Sanguinea | Bright indirect light (just back from a sunny window) | Keep the medium constantly damp; water roughly every 2-4 days so it never dries out | Mildly toxic to pets |
| Nepenthes sibuyanensis | Bright indirect light (just back from a sunny window) | Keep media evenly moist, watering about every 1-3 days | Mildly toxic to pets |
| Nepenthes spathulata | Bright indirect light (just back from a sunny window) | Keep media moist; water every 2-3 days | Mildly toxic to pets |
| Nepenthes talangensis | Bright indirect light (just back from a sunny window) | Keep media evenly moist, never waterlogged; water from the top every 2-4 days | Mildly toxic to pets |
| Nepenthes tentaculata | Bright indirect light (just back from a sunny window) | Keep the medium constantly moist, watering every 2-4 days so it never fully dries | Mildly toxic to pets |
| Nepenthes tenuis | Bright indirect light (just back from a sunny window) | Keep media evenly moist, never waterlogged; water from the top every 2-4 days | Mildly toxic to pets |
| Nepenthes truncata | Bright indirect light (just back from a sunny window) | Keep the medium evenly moist, watering every 2-4 days so it never fully dries | Pet-safe |
| Nepenthes veitchii | Bright indirect light (just back from a sunny window) | Keep media moist; water every 2-3 days | Mildly toxic to pets |
| Nepenthes villosa | Bright indirect light (just back from a sunny window) | Keep media moist; water every 2-3 days | Mildly toxic to pets |
| Nest Air Plant | Bright indirect light (just back from a sunny window) | Mist or dip 2–3 times per week in summer; once per week in cool winter conditions. | Pet-safe |
| Nesting Masdevallia | Medium indirect light (a couple of metres from a window) | Daily in hot weather; every 2–3 days in cool seasons | Pet-safe |
| Net-scaled Ceratostylis | Bright indirect light (just back from a sunny window) | When the upper surface of the medium is just drying, roughly every 4-6 days | Pet-safe |
| net-vein camellia | Bright indirect light (just back from a sunny window) | Regularly; consistent moisture throughout the year | Mildly toxic to pets |
| Netted Chain Fern | Medium indirect light (a couple of metres from a window) | Keep continuously moist to wet; check every 3-5 days and never allow drying | Mildly toxic to pets |
| Nettle-leaved Bellflower | Medium indirect light (a couple of metres from a window) | Moderate — keep consistently moist, especially in summer | Pet-safe |
| Network Calathea | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Network Calathea (Calathea Musaica) | Bright indirect light (just back from a sunny window) | Roughly weekly; keep soil lightly and evenly moist, never soggy or bone-dry | Pet-safe |
| Nevada Lewisia | Bright indirect light (just back from a sunny window) | Moderate in spring; almost none in summer dormancy | Mildly toxic to pets |
| Never Never Plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil dries out | Mildly toxic to pets |
| Never Never Plant 'Grey Star' | Bright indirect light (just back from a sunny window) | Roughly weekly in spring/summer; less in winter | Mildly toxic to pets |
| New Guinea Creeper | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; reduce slightly in cooler or drier months | Mildly toxic to pets |
| New Guinea Impatiens | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, often every 1-3 days in warm weather | Pet-safe |
| New York Fern | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water when the top 2-3 cm begin to dry, roughly weekly in dry spells | Mildly toxic to pets |
| New Zealand Gentian | Bright indirect light (just back from a sunny window) | Keep moist but never waterlogged; reduce in winter | Mildly toxic to pets |
| New Zealand Micro Sword | Bright indirect light (just back from a sunny window) | Permanently submerged aquatic plant | Pet-safe |
| New Zealand Snowberry | Medium indirect light (a couple of metres from a window) | Every 7 days during the growing season; reduce in winter | Mildly toxic to pets |
| New Zealand Tree Fern | Bright indirect light (just back from a sunny window) | Consistently moist — water 2-3 times per week during dry spells in the growing season | Pet-safe |
| New Zealand Tree Fuchsia | Bright indirect light (just back from a sunny window) | Regular — consistent moisture | Pet-safe |
| Nicaraguan Columnea | Bright indirect light (just back from a sunny window) | Every 5–8 days in growing season; every 10–14 days in winter | Pet-safe |
| Nicaraguan Guzmania | Bright indirect light (just back from a sunny window) | Refill cup every 7–10 days; flush monthly | Pet-safe |
| Nicholas Hakone Grass | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist; water 1-2 times weekly, more in heat | Mildly toxic to pets |
| Nicotiana sylvestris | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-6 days | Toxic to pets |
| Night-Blooming Cereus | Bright indirect light (just back from a sunny window) | When the top few cm of mix is dry, roughly every 1-2 weeks in growth | Pet-safe |
| Night-blooming Jasmine | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; reduce to every 10–14 days in cooler months | Toxic to pets |
| Night-Scented Epidendrum | Bright indirect light (just back from a sunny window) | Every 4–5 days in growth; every 7–10 days in cool or dry periods | Pet-safe |
| Nikko Blue Bigleaf Hydrangea | Bright indirect light (just back from a sunny window) | When the top 3–5 cm of soil is dry, roughly every 3–5 days in summer; reduce in winter | Toxic to pets |
| Nikko bog rosemary | Bright indirect light (just back from a sunny window) | Consistently moist; never dry out | Toxic to pets |
| Nile Sage | Bright indirect light (just back from a sunny window) | Moderate; consistent moisture preferred | Pet-safe |
| Nimmo's Ginger | Medium indirect light (a couple of metres from a window) | Consistently moist during the growing season; reduced but not dry during dormancy. | Mildly toxic to pets |
| Ninja Foamflower | Medium indirect light (a couple of metres from a window) | Every 5–7 days; increase in warm or dry periods | Pet-safe |
| Ninja Tiarella | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water deeply once or twice a week during dry periods | Mildly toxic to pets |
| Nivalis flowering quince | Bright indirect light (just back from a sunny window) | Weekly during establishment; rainfall usually sufficient once established | Mildly toxic to pets |
| Nobile Dendrobium | Bright indirect light (just back from a sunny window) | Frequently in spring-summer growth, then sharply reduced over the cool winter rest | Pet-safe |
| Noble Aeonium | Bright indirect light (just back from a sunny window) | Every 1–2 weeks in the active season (autumn to spring); minimal or none in summer | Mildly toxic to pets |
| Noble Cape Primrose | Bright indirect light (just back from a sunny window) | every 5–9 days in active growth, every 14 days in winter | Pet-safe |
| Noble Carrion Flower | Bright indirect light (just back from a sunny window) | Every 14–21 days in the growing season; once monthly or less in winter | Pet-safe |
| Noble Cymbidium | Bright indirect light (just back from a sunny window) | Every 5–7 days in growth; every 10–14 days in winter | Pet-safe |
| Noble Cymbidium | Bright indirect light (just back from a sunny window) | Keep lightly and evenly moist, about every 5-7 days, reduced in winter | Pet-safe |
| Noble Dendrobium (miniature form) | Bright indirect light (just back from a sunny window) | Every 5-7 days in summer; every 14-21 days in the winter rest period | Pet-safe |
| Noble Fissidens | Medium indirect light (a couple of metres from a window) | Permanently submerged aquatic plant | Pet-safe |
| Noble Hand Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Nodding Enkianthus | Bright indirect light (just back from a sunny window) | Regularly; maintain even soil moisture | Mildly toxic to pets |
| Nodding Greenhood | Medium indirect light (a couple of metres from a window) | Lightly moist during active growth (autumn–spring), roughly every 5-8 days | Pet-safe |
| Nodding Heliconia | Bright indirect light (just back from a sunny window) | 2–3 times per week during active growth; reduce in winter | Mildly toxic to pets |
| Nodding Sun Pitcher | Bright indirect light (just back from a sunny window) | Keep substrate moist at all times; shallow tray or top-watering | Mildly toxic to pets |
| Nodding Trillium | Medium indirect light (a couple of metres from a window) | Consistently moist to seasonally wet; tolerates more moisture than most Trilliums. | Mildly toxic to pets |
| Node-flower Cyanotis | Bright indirect light (just back from a sunny window) | Twice weekly in summer; reduce to once weekly in winter | Mildly toxic to pets |
| Norfolk Island pine | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Pet-safe |
| Norfolk Island Pine | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in spring and summer | Mildly toxic to pets |
| Norfolk Island Spleenwort | Medium indirect light (a couple of metres from a window) | Every 5–7 days; adjust seasonally | Pet-safe |
| Norfolk Tree Fern | Bright indirect light (just back from a sunny window) | 2-3 times per week; increase in summer and wind | Pet-safe |
| Normanbya Cycad | Bright indirect light (just back from a sunny window) | Every 7–14 days in growing season; every 14–21 days in winter | Toxic to pets |
| Norstog's Ceratozamia | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; every 3–5 weeks in winter | Toxic to pets |
| Northern Buckler Fern | Medium indirect light (a couple of metres from a window) | Weekly during the growing season; reduce significantly in winter | Mildly toxic to pets |
| Northern Holly Fern | Medium indirect light (a couple of metres from a window) | Every 5–7 days; less in winter | Pet-safe |
| Northern Japanese Hemlock | Bright indirect light (just back from a sunny window) | Weekly during growing season; less in winter | Pet-safe |
| Northern Lady Fern | Medium indirect light (a couple of metres from a window) | Every 3–5 days in warm weather; keep soil consistently moist but not waterlogged | Mildly toxic to pets |
| Northern Maidenhair Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 4-6 days | Pet-safe |
| Northern Needleleaf Air Plant | Bright indirect light (just back from a sunny window) | Soak once a week; mist every 2–3 days | Pet-safe |
| Northern Sea Oats | Bright indirect light (just back from a sunny window) | Water to keep soil moist, deeply once or twice weekly in dry periods | Mildly toxic to pets |
| Notable Slipper Orchid | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of the medium is dry, approximately every 5-7 days; reduce slightly in winter | Mildly toxic to pets |
| Notch Cactus | Bright indirect light (just back from a sunny window) | When the mix is fully dry, sparingly every 2-3 weeks in summer; keep dry in winter | Mildly toxic to pets |
| Notch-Tipped Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Notched Butterwort | Medium indirect light (a couple of metres from a window) | Keep consistently moist; reduce slightly in cooler months | Mildly toxic to pets |
| Nottingham Catchfly | Bright indirect light (just back from a sunny window) | Low; allow soil to dry between waterings | Mildly toxic to pets |
| Novak's Air Plant | Bright indirect light (just back from a sunny window) | Mist thoroughly 2–3 times per week in warm conditions; reduce to once per week in cool, low-humidity winters. | Pet-safe |
| Nuccio's Gems camellia | Bright indirect light (just back from a sunny window) | Regular; consistent moisture essential from summer through bud set | Mildly toxic to pets |
| Nummularioides Wax Plant | Bright indirect light (just back from a sunny window) | Every 7-10 days in the growing season; roughly every 2 weeks in winter | Pet-safe |
| Nun's Orchid | Bright indirect light (just back from a sunny window) | Keep evenly moist in growth, roughly every 3-5 days | Mildly toxic to pets |
| Nuttall's Waterweed | Medium indirect light (a couple of metres from a window) | Permanently submerged | Pet-safe |
| Nymphoides aquatica | Bright indirect light (just back from a sunny window) | Fully submerged in an aquarium or pond | Mildly toxic to pets |
| Oak Fern | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top 2 cm begins to dry, roughly weekly in dry weather | Mildly toxic to pets |
| Oak Leaf Fern | Bright indirect light (just back from a sunny window) | When the top few cm of substrate is dry, roughly every 5-8 days | Mildly toxic to pets |
| Oak-leaf Primulina | Medium indirect light (a couple of metres from a window) | Allow soil to become fairly dry between waterings | Mildly toxic to pets |
| Oakleaf Croton | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Oakleaf Hydrangea | Bright indirect light (just back from a sunny window) | Keep soil moist while establishing; then water deeply during dry spells, roughly weekly in summer heat | Toxic to pets |
| Oakleaf Hydrangea 'Snow Queen' | Bright indirect light (just back from a sunny window) | Roughly weekly, about 2.5 cm (1 inch) per week while establishing; deep-soak when the top 5 cm of soil dries | Toxic to pets |
| Oaxacan Air Plant | Bright indirect light (just back from a sunny window) | Mist 2–3 times per week or soak for 20–30 minutes once per week; reduce in cooler months. | Pet-safe |
| Oblong-leaf Sanchezia | Bright indirect light (just back from a sunny window) | Every 5–7 days in the growing season; every 10–14 days in winter | Mildly toxic to pets |
| Obscura Wax Plant | Bright indirect light (just back from a sunny window) | Every 10-14 days in growth; every 2-3 weeks in winter | Pet-safe |
| Obscure Begonia | Medium indirect light (a couple of metres from a window) | Every 7–10 days in growth, every 14 days in cooler months | Toxic to pets |
| Ochre Coelogyne | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; reduce to once every 2–3 weeks in winter rest | Pet-safe |
| Ocipus Alternanthera | Bright indirect light (just back from a sunny window) | Fully submerged aquatic; maintain in aquarium water continuously | Pet-safe |
| October Daphne | Bright indirect light (just back from a sunny window) | Every 10-14 days in active growth; minimal in winter dormancy | Pet-safe |
| Odontoglossum crispum | Bright indirect light (just back from a sunny window) | Keep evenly moist year-round, watering roughly every 3-5 days so the mix never fully dries | Pet-safe |
| Odontonema tubaeforme | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 4-6 days in growth | Mildly toxic to pets |
| Oersted's Columnea | Bright indirect light (just back from a sunny window) | When the top 50% of the compost volume has dried out | Pet-safe |
| Oersted's Dieffenbachia | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Ogon Sweet Flag | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water whenever the surface begins to feel barely damp | Mildly toxic to pets |
| Ohio Spiderwort | Bright indirect light (just back from a sunny window) | Weekly to fortnightly; drought-tolerant once established | Mildly toxic to pets |
| Old Father Live Forever | Bright indirect light (just back from a sunny window) | Water when the top 3–5 cm of compost is dry, roughly every 10–14 days; reduce in winter | Toxic to pets |
| Old World Climbing Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Olive Porroglossum | Medium indirect light (a couple of metres from a window) | Water or mist daily in warm months; every 1-2 days in cooler months — roots must never fully dry out | Pet-safe |
| Oliver's impatiens | Medium indirect light (a couple of metres from a window) | Every 4–7 days; moderate and consistent | Pet-safe |
| Olson's Begonia | Bright indirect light (just back from a sunny window) | Every 6–9 days during active growth, every 12–14 days in cooler months | Toxic to pets |
| Oncidium ornithorhynchum | Bright indirect light (just back from a sunny window) | Every 4-6 days in growth, as the mix nears dryness | Pet-safe |
| Oncidium sphacelatum | Bright indirect light (just back from a sunny window) | Every 4-7 days in growth, when the mix approaches dryness | Pet-safe |
| One-flower Masdevallia | Medium indirect light (a couple of metres from a window) | When the top 1 cm of moss or mix begins to dry, approximately every 3-5 days; never allow to dry out completely | Pet-safe |
| Only the Lonely Tobacco Plant | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Open Dancing Ginger | Medium indirect light (a couple of metres from a window) | 1–2 times per week during growing season; stop in winter | Mildly toxic to pets |
| Opposite-leaf Cliff Stonecrop | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in spring and summer; very rarely in winter | Pet-safe |
| Orange Canistrum | Bright indirect light (just back from a sunny window) | Keep the central tank filled with fresh water; water the root zone when the top 2-3 cm is dry, roughly every 7-10 days | Pet-safe |
| Orange New Zealand sedge | Bright indirect light (just back from a sunny window) | Regular watering until established; moderate thereafter | Pet-safe |
| Orange Prosthechea | Bright indirect light (just back from a sunny window) | When the top layer of the mix is dry, roughly every 6-9 days; reduce slightly in winter | Pet-safe |
| Orange Queen Epimedium | Medium indirect light (a couple of metres from a window) | Weekly during establishment and dry spells; established clumps are notably drought-tolerant | Mildly toxic to pets |
| Orange River Climbing Onion | Bright indirect light (just back from a sunny window) | Every 1–2 weeks during active vine growth; completely dry during summer dormancy | Toxic to pets |
| orange sinningia | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; stop completely during winter dormancy | Pet-safe |
| Orange Snow Ball Cactus | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 7-10 days in spring and summer; every 4-6 weeks in autumn; none or barely any in winter | Pet-safe |
| Orange Tulip Ginger | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil feels dry, roughly every 7 days in the growing season | Mildly toxic to pets |
| Orange Woolly Sage | Bright indirect light (just back from a sunny window) | Weekly in the growing season; reduce to monthly in winter | Pet-safe |
| Orange-Sheathed Bucephalandra | Medium indirect light (a couple of metres from a window) | Permanently moist substrate (emersed) or fully submerged (aquatic); rhizome must never dry out | Toxic to pets |
| Orbea ciliata | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in summer; rarely in winter | Mildly toxic to pets |
| Orbea decaisneana | Bright indirect light (just back from a sunny window) | When the soil is fully dry, about every 10-14 days in summer; minimal in winter | Mildly toxic to pets |
| Orbea lutea | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in summer; rarely in winter | Mildly toxic to pets |
| Orchid | Bright indirect light (just back from a sunny window) | Once a week — soak the medium thoroughly, then drain | Pet-safe |
| Orchid Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| Ord River Sundew | Bright indirect light (just back from a sunny window) | Standing tray method (growing season); minimal watering (rest period) | Pet-safe |
| Oregon Stonecrop | Bright indirect light (just back from a sunny window) | Every 10-14 days in active growth; monthly or less in winter | Pet-safe |
| Oregon Woodsia | Medium indirect light (a couple of metres from a window) | Water every 7–14 days, less in winter | Pet-safe |
| Oreocharis auricula | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 4-6 days in growth | Mildly toxic to pets |
| Oriental Chain Fern | Medium indirect light (a couple of metres from a window) | Regularly — keep soil consistently moist | Pet-safe |
| orientandina goldfish plant | Bright indirect light (just back from a sunny window) | Allow the top 2–3 cm of the growing medium to dry before watering; roughly every 7–10 days in active growth. | Pet-safe |
| Ornate Begonia | Medium indirect light (a couple of metres from a window) | When the top 2 cm of growing medium feels dry | Toxic to pets |
| Ornate Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Orpen's Aloinopsis | Bright indirect light (just back from a sunny window) | Every 10–14 days in autumn–spring; minimal in summer | Pet-safe |
| Orpheus Flower | Medium indirect light (a couple of metres from a window) | Lightly and consistently, keeping the root zone barely moist but never wet | Mildly toxic to pets |
| Orssich's Holiday Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season; reduce to every 2-3 weeks during the autumn rest | Pet-safe |
| Orthophytum saxicola | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| Osmunda regalis 'Purpurascens' | Medium indirect light (a couple of metres from a window) | Keep soil constantly moist to wet; check every 2-3 days in growth | Mildly toxic to pets |
| Osmunda spectabilis | Medium indirect light (a couple of metres from a window) | Keep wet to consistently moist at all times; water whenever the surface is not damp | Pet-safe |
| Ospina's Vriesea | Bright indirect light (just back from a sunny window) | Keep cup filled; flush weekly; medium every 2 weeks | Pet-safe |
| Ossorio Gold Umbrella Pine | Bright indirect light (just back from a sunny window) | Once every 7-10 days, keeping soil consistently moist throughout the growing season | Mildly toxic to pets |
| Ostbo Red Mountain Laurel | Medium indirect light (a couple of metres from a window) | Regular; maintain even moisture | Toxic to pets |
| Othello Ligularia | Medium indirect light (a couple of metres from a window) | Keep permanently moist; water deeply 2-3 times weekly, daily during heat | Mildly toxic to pets |
| Outstretched Maxillaria | Bright indirect light (just back from a sunny window) | Water when the top 1-2 cm of medium is dry, approximately every 3-5 days | Pet-safe |
| Ovate Maiden Fern | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water when the top 2-3 cm begin to dry, roughly weekly in dry weather | Mildly toxic to pets |
| Overdam Feather Reed Grass | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 2 weeks once established | Pet-safe |
| Overlooked Lagenandra | Medium indirect light (a couple of metres from a window) | Keep permanently moist to semi-submerged; does not tolerate drying out | Toxic to pets |
| Ox Tongue | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in summer, monthly or less in winter | Pet-safe |
| Ox Tongue Plant | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 10-14 days in summer | Pet-safe |
| Oxalis tetraphylla | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-10 days in active growth | Toxic to pets |
| Oxalis Triangularis 'Mijke' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Oxalis Vulcanicola 'Zinfandel' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Oxford and Cambridge Grape Hyacinth | Bright indirect light (just back from a sunny window) | Rainfall usually sufficient; water during prolonged dry spells in spring | Toxic to pets |
| Oxlip | Medium indirect light (a couple of metres from a window) | Regularly; keep soil consistently moist, especially in summer | Mildly toxic to pets |
| Oxycardium | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Pachystachys coccinea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-6 days in active growth | Mildly toxic to pets |
| Pachystachys Lutea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 4-7 days in growth | Mildly toxic to pets |
| Pacific Dogwood | Bright indirect light (just back from a sunny window) | Regular deep watering, especially in summer; do not let the root zone dry out | Pet-safe |
| Pacific Maid Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 2–3 days; keep evenly moist | Pet-safe |
| Pacific Silver Fir | Bright indirect light (just back from a sunny window) | Regularly during establishment; relies on natural rainfall when mature | Pet-safe |
| Padang Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in growth; every 3–4 weeks in winter | Pet-safe |
| Pagoda Dogwood | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist; water deeply weekly in the first two seasons and during droughts | Pet-safe |
| Pagoda Fawn Lily | Medium indirect light (a couple of metres from a window) | Regular during spring growing season; reduce significantly after dormancy | Mildly toxic to pets |
| Painted Begonia | Medium indirect light (a couple of metres from a window) | Every 6–9 days in spring and summer; every 12–16 days in autumn and winter | Toxic to pets |
| Painted Brake Fern | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil starts to dry, roughly every 5-7 days; keep evenly moist | Pet-safe |
| Painted Brake Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days in spring and summer | Mildly toxic to pets |
| Painted Caladium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days during active growth | Toxic to pets |
| Painted Columnea | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; reduce to every 10–14 days in winter | Pet-safe |
| Painted Dumbcane | Medium indirect light (a couple of metres from a window) | When the top 3–4 cm of soil is dry, roughly every 7–14 days | Toxic to pets |
| Painted Fern 'Burgundy Lace' | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil begins to dry, often every 4-7 days | Mildly toxic to pets |
| Painted Fern 'Pewter Lace' | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil starts to dry, often every 4-7 days | Mildly toxic to pets |
| Painted Flowering Maple | Bright indirect light (just back from a sunny window) | Water when top 1–2 cm of compost dries; less in winter | Mildly toxic to pets |
| Painted Lady | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Toxic to pets |
| Painted Masdevallia | Medium indirect light (a couple of metres from a window) | Water when medium is nearly dry, roughly every 1-2 days in active growth | Pet-safe |
| Painted Nettle | Bright indirect light (just back from a sunny window) | Water when the top 1–2 cm of compost feels dry, roughly every 5–7 days indoors | Toxic to pets |
| Painted Sonerila | Medium indirect light (a couple of metres from a window) | Every 4–6 days; keep lightly moist but never waterlogged | Pet-safe |
| Painted Spiral Ginger | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, roughly every 6-8 days in the growing season; every 14 days in winter | Mildly toxic to pets |
| Painted Trillium | Medium indirect light (a couple of metres from a window) | Consistently moist throughout the growing season; never allow soil to dry out. | Mildly toxic to pets |
| Palace Purple coral bells | Medium indirect light (a couple of metres from a window) | Once or twice per week in growing season; reduce in winter | Pet-safe |
| Pale Anthurium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days | Toxic to pets |
| Pale Yellow Fritillary | Bright indirect light (just back from a sunny window) | Regular during active growth; reduce once foliage dies back in early summer | Toxic to pets |
| Pale Yellow Trillium | Medium indirect light (a couple of metres from a window) | Consistently moist through spring; reduce during summer dormancy | Mildly toxic to pets |
| Pale-Spike Lobelia | Bright indirect light (just back from a sunny window) | Moderate; keep moist but tolerates brief dry spells | Toxic to pets |
| Palm Leaf Begonia | Bright indirect light (just back from a sunny window) | Roughly weekly in growing season; let the top 2-3 cm dry first | Toxic to pets |
| palm sedge | Medium indirect light (a couple of metres from a window) | Consistently moist; water whenever the top 2 cm of soil dries | Pet-safe |
| Palm sedge | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water when the top 1–2 cm of soil dries out | Pet-safe |
| Palmate Begonia | Medium indirect light (a couple of metres from a window) | Every 6–8 days in growing season; reduce to every 10–14 days in winter | Toxic to pets |
| Palmetto Sedge | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, roughly every 5-8 days | Pet-safe |
| Panama Dichaea | Medium indirect light (a couple of metres from a window) | Keep consistently moist but never soggy; water every 3-5 days in warm months and every 5-8 days in cooler months — do not allow the plant to dry out completely as it has no pseudobulbs for water storage | Pet-safe |
| Panama Queen | Bright indirect light (just back from a sunny window) | Every 5–7 days during the growing season; reduce in winter | Pet-safe |
| Panda Face Ginger | Medium indirect light (a couple of metres from a window) | Every 7–10 days in the growing season; reduce in winter | Mildly toxic to pets |
| Pandacaqui | Bright indirect light (just back from a sunny window) | Every 5–7 days; allow soil to partially dry between waterings | Toxic to pets |
| Panicle Fuchsia | Bright indirect light (just back from a sunny window) | Regular — keep just moist | Pet-safe |
| Pansy Orchid | Bright indirect light (just back from a sunny window) | Every 3-5 days; up to 2-3 times weekly in warm, dry spells | Pet-safe |
| Pansy Orchid | Medium indirect light (a couple of metres from a window) | When the surface of the mix begins to dry, roughly every 4-6 days | Pet-safe |
| Paperwhite Narcissus | Bright indirect light (just back from a sunny window) | Keep roots consistently moist during forcing; reduce after flowering | Toxic to pets |
| Paphiopedilum 'Pinocchio' | Medium indirect light (a couple of metres from a window) | Every 4-7 days; keep evenly moist | Pet-safe |
| Paphiopedilum bellatulum | Medium indirect light (a couple of metres from a window) | Every 5-8 days; keep lightly moist, never waterlogged | Pet-safe |
| Paphiopedilum malipoense | Medium indirect light (a couple of metres from a window) | Every 4-7 days; keep evenly moist, never bone-dry | Pet-safe |
| Paphiopedilum venustum | Medium indirect light (a couple of metres from a window) | Every 4-7 days; keep evenly moist | Pet-safe |
| Paraboea rufescens | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 6-9 days | Mildly toxic to pets |
| Paradox Sundew | Bright indirect light (just back from a sunny window) | Wet tray (growing season); nearly dry (dry season / dormancy) | Pet-safe |
| Parallel Peperomia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Parallel-Stripe Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Parker's jasmine | Bright indirect light (just back from a sunny window) | Every 10–14 days; highly drought-tolerant once established | Mildly toxic to pets |
| Parkinson's Epidendrum | Bright indirect light (just back from a sunny window) | Every 3–5 days in active growth; reduced in winter | Pet-safe |
| Parlor palm | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, every 7-10 days | Pet-safe |
| Parlour Palm | Medium indirect light (a couple of metres from a window) | Every 7–10 days in spring and summer; every 14–21 days in winter | Pet-safe |
| Parodia microsperma | Bright indirect light (just back from a sunny window) | Soak-and-dry, roughly every 7-10 days in summer; keep dry in winter | Pet-safe |
| Parrot Feather Bromeliad | Bright indirect light (just back from a sunny window) | Keep cup filled; medium watering every 2 weeks | Pet-safe |
| Parrot's Beak Heliconia | Bright indirect light (just back from a sunny window) | Every 5–8 days; keep soil consistently moist | Mildly toxic to pets |
| Parsley Fern | Bright indirect light (just back from a sunny window) | Maintain consistent moisture; never allow to dry out completely | Mildly toxic to pets |
| Parthenocissus henryana | Bright indirect light (just back from a sunny window) | Keep young plants moist; water established plants only in drought | Toxic to pets |
| Parthenocissus quinquefolia | Bright indirect light (just back from a sunny window) | Water through the first one to two seasons, then only in drought | Toxic to pets |
| Parthenocissus tricuspidata | Bright indirect light (just back from a sunny window) | Water young plants in dry spells until established, then rarely | Toxic to pets |
| Passiflora alata | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 4-7 days in active growth | Mildly toxic to pets |
| Passiflora coccinea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil feels dry, roughly every 4-7 days in growth | Mildly toxic to pets |
| Passiflora racemosa | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 4-7 days during growth | Mildly toxic to pets |
| Paul's Glory Hosta | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Paz's Wax Plant | Bright indirect light (just back from a sunny window) | Every 7-14 days in active growth; every 14-21 days in winter | Pet-safe |
| Peace lily | Medium indirect light (a couple of metres from a window) | As soon as the leaves start to droop slightly, usually every 5-7 days | Toxic to pets |
| Peach-leaved Bellflower 'Chettle Charm' | Bright indirect light (just back from a sunny window) | Once a week in dry weather; reduce in autumn and winter | Mildly toxic to pets |
| Peacock Ginger | Medium indirect light (a couple of metres from a window) | Regular during active growth; none during winter dormancy | Pet-safe |
| Peacock Plant | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of compost dries; roughly weekly | Pet-safe |
| Peacock Plant | Medium indirect light (a couple of metres from a window) | Roughly weekly; when the top 2-3 cm of compost dries | Pet-safe |
| Peacock Plant Ginger | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil feels dry, roughly every 7-10 days in active growth | Mildly toxic to pets |
| Pearl Haworthia | Bright indirect light (just back from a sunny window) | When soil is fully dry, about every 10-14 days in summer, minimal in winter | Pet-safe |
| Pearl Plant | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in summer | Pet-safe |
| Pebbled Tiger Jaws | Bright indirect light (just back from a sunny window) | When the soil is completely dry, roughly every 14–21 days in the growing season and sparingly every 4–6 weeks in winter | Mildly toxic to pets |
| Pelargonium x domesticum 'Burgundy' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Pelargonium x domesticum 'Carisbrooke' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Pelargonium x domesticum 'Chocolate Blotch' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days in growth | Toxic to pets |
| Pelargonium x domesticum 'Hazel Carey' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days in growth | Toxic to pets |
| Pelargonium x domesticum 'Lavender Grand Slam' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Pellionia daveauana | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil begins to dry, often every 4-7 days | Pet-safe |
| Peltate-Leaf Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days during the growing season; every 3–4 weeks in winter | Pet-safe |
| Pemba Palm | Bright indirect light (just back from a sunny window) | Every 4–6 days in warm months; reduce to every 10–14 days in cooler periods | Pet-safe |
| Pencil Cactus (Firestick) | Bright indirect light (just back from a sunny window) | Every 2-3 weeks in spring/summer; roughly monthly or less in winter | Toxic to pets |
| Pencil Cactus Rhipsalis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Pencil Pine | Bright indirect light (just back from a sunny window) | Keep permanently moist; never let it dry out, watering deeply during any dry period | Mildly toxic to pets |
| Pencilled Cranesbill | Medium indirect light (a couple of metres from a window) | Occasional watering during establishment; largely self-sufficient once established | Pet-safe |
| Pennsylvania Sedge | Medium indirect light (a couple of metres from a window) | Water to establish, then largely self-sufficient; occasional deep watering in extended drought | Mildly toxic to pets |
| Penny Yellow Viola | Bright indirect light (just back from a sunny window) | When the top 1–2 cm of soil is dry, roughly every 4–6 days | Mildly toxic to pets |
| Penther's Cape Primrose | Bright indirect light (just back from a sunny window) | every 7–10 days during active growth, every 14–21 days in winter | Pet-safe |
| Peperomia | Medium indirect light (a couple of metres from a window) | When the soil is almost fully dry, every 10-14 days | Pet-safe |
| Peperomia 'Frost' | Medium indirect light (a couple of metres from a window) | When the top half of the soil is dry, typically every 7-10 days | Pet-safe |
| Peperomia 'Hope' | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, typically every 7-12 days | Pet-safe |
| Peperomia 'Napoli Nights' | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 10-14 days | Pet-safe |
| Peperomia 'Napoli Nights' (dark form) | Bright indirect light (just back from a sunny window) | When top 2-3 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia 'Peppermill' | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 10-14 days | Pet-safe |
| Peperomia 'Pixie Lime' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia 'Quito' | Bright indirect light (just back from a sunny window) | When top 2-3 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia 'Rana Verde' | Bright indirect light (just back from a sunny window) | When top 2-3 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia 'Schumi Red' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia 'Watermelon' (Ginny hybrid) | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Peperomia albovittata | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 10-14 days | Pet-safe |
| Peperomia albovittata 'Minima' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Peperomia albovittata 'Rana Verde' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, about every 7-12 days | Pet-safe |
| Peperomia angulata | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia argyreia 'Soccer Ball' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Peperomia arifolia | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Peperomia asperula | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days | Pet-safe |
| Peperomia axillaris | Bright indirect light (just back from a sunny window) | When the soil is almost fully dry, roughly every 12-16 days | Pet-safe |
| Peperomia blanda | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia caperata 'Burgundy' | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia caperata 'Luna Red' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia caperata 'Red Ripple' | Bright indirect light (just back from a sunny window) | When top 2-3 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia caperata 'Rosso' | Medium indirect light (a couple of metres from a window) | When the top half of the soil is dry, typically every 7-10 days | Pet-safe |
| Peperomia caperata 'Suzanne' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Peperomia caperata 'Teresa' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia clusiifolia | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Peperomia columella | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-21 days in growth | Pet-safe |
| Peperomia crassifolia | Bright indirect light (just back from a sunny window) | When top 3-4 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Peperomia deppeana | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Peperomia dolabriformis | Bright indirect light (just back from a sunny window) | When soil is fully dry, roughly every 14-21 days | Pet-safe |
| Peperomia ecklonii | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Peperomia elongata | Bright indirect light (just back from a sunny window) | When top 2-3 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia emarginella | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is just drying, about every 5-9 days | Pet-safe |
| Peperomia floribunda | Bright indirect light (just back from a sunny window) | When top 2-3 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia fraseri | Bright indirect light (just back from a sunny window) | When the top third of the soil is dry, roughly every 7-10 days | Pet-safe |
| Peperomia Frost | Bright indirect light (just back from a sunny window) | When the top 1-2 in (2.5-5 cm) of soil is dry, roughly every 7-10 days | Pet-safe |
| Peperomia Ginny | Bright indirect light (just back from a sunny window) | Every 1-2 weeks | Pet-safe |
| Peperomia glabella | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Peperomia glabella 'Variegata' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Peperomia graveolens 'Ruby Glow' | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-18 days | Pet-safe |
| Peperomia hoffmannii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia Hope | Bright indirect light (just back from a sunny window) | Every 1-2 weeks | Pet-safe |
| Peperomia incana | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 12-18 days | Pet-safe |
| Peperomia maculosa | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 9-12 days | Pet-safe |
| Peperomia magnoliifolia | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia magnoliifolia 'Variegata' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 8-13 days | Pet-safe |
| Peperomia marmorata | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia nitida | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Peperomia nitida 'Variegata' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia nivalis | Bright indirect light (just back from a sunny window) | When the soil is dry, roughly every 7-14 days in growth | Pet-safe |
| Peperomia obtusifolia 'Golden Gate' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, about every 7-14 days | Pet-safe |
| Peperomia obtusifolia 'Lemon Lime' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia obtusifolia 'Marble' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia obtusifolia 'Variegata' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Peperomia orba | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, about every 7-12 days | Pet-safe |
| Peperomia Pepperspot | Bright indirect light (just back from a sunny window) | When the top half of the pot is dry, roughly every 7-12 days | Pet-safe |
| Peperomia perciliata | Bright indirect light (just back from a sunny window) | When the soil surface is dry, roughly every 7-10 days | Pet-safe |
| Peperomia pereskiifolia | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Peperomia pseudovariegata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Peperomia Rosso | Bright indirect light (just back from a sunny window) | When the soil is 50-75% dry, roughly every 10-14 days | Pet-safe |
| Peperomia rotundifolia 'Trailing Jade' | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia rubella 'Zippy' | Bright indirect light (just back from a sunny window) | When the top 2-4 cm of soil is dry, roughly every 6-10 days | Pet-safe |
| Peperomia scandens | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Peperomia serpens | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Peperomia tetragona | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Peperomia tetraphylla | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 10-14 days | Pet-safe |
| Peperomia trifolia | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 10-14 days | Pet-safe |
| Peperomia trinervula | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Peperomia urocarpa | Bright indirect light (just back from a sunny window) | When the top third to half of the soil is dry, roughly every 7-12 days | Pet-safe |
| Peperomia velutina | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 9-12 days | Pet-safe |
| Peperomia verticillata | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Peperomia viridispica | Bright indirect light (just back from a sunny window) | When top 2-3 cm of soil is dry, roughly every 7-12 days | Pet-safe |
| Pepperwort | Bright indirect light (just back from a sunny window) | Fully submerged or rooted in very shallow water; do not allow the substrate to dry out | Pet-safe |
| Percival's Cattleya | Bright indirect light (just back from a sunny window) | Every 7-10 days in active growth; reduce to every 14-21 days after pseudobulbs mature in autumn | Pet-safe |
| Pereskia-Leaf Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Perfoliate Bellwort | Medium indirect light (a couple of metres from a window) | Moderate in spring; established plants are drought-tolerant once dormant. | Pet-safe |
| Persian Barrenwort | Medium indirect light (a couple of metres from a window) | Weekly for the first 1–2 seasons; established plants need watering only during extreme drought | Mildly toxic to pets |
| Persian Rosularia | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in the growing season; once a month or less in winter | Mildly toxic to pets |
| Persian Shield | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (1 inch) of soil dries | Mildly toxic to pets |
| Persian Violet | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is just dry, roughly every 3-5 days | Pet-safe |
| Peruvian Pamianthe | Bright indirect light (just back from a sunny window) | Water regularly during growth; reduce significantly after flowering | Toxic to pets |
| Petiole Sundew | Bright indirect light (just back from a sunny window) | Wet tray (October–March in Australia / spring–autumn in cultivation); reduced watering (cooler months) | Pet-safe |
| Petra Croton | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Petrocosmea iodioides | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of mix feels barely dry, roughly every 5-7 days | Mildly toxic to pets |
| Petrocosmea kerrii | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 5-8 days | Mildly toxic to pets |
| Petrocosmea nervosa | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of mix is just dry, about every 5-7 days | Mildly toxic to pets |
| Petrocosmea parryorum | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 5-8 days | Mildly toxic to pets |
| Peyote-Like Turbinicarpus | Bright indirect light (just back from a sunny window) | When the soil is completely dry, roughly every 14-21 days in summer and once a month or less in winter | Pet-safe |
| Pflanz's Chin Cactus | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring/summer; every 3–4 weeks in autumn; almost none in winter | Pet-safe |
| Pflanz's Chin Cactus | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 10-14 days in summer; reduce to once every 4-6 weeks in winter | Pet-safe |
| Phalaenopsis 'Brother Girl' | Bright indirect light (just back from a sunny window) | When the bark medium is nearly dry, typically every 7-10 days | Pet-safe |
| Phalaenopsis 'Brother Sara Gold' | Bright indirect light (just back from a sunny window) | When the bark is nearly dry, typically every 7-10 days | Pet-safe |
| Phalaenopsis 'Liodoro' | Bright indirect light (just back from a sunny window) | About every 7-10 days, when the bark begins to dry and roots silver over | Pet-safe |
| Phalaenopsis 'Sogo Yukidian' | Bright indirect light (just back from a sunny window) | When the bark mix is nearly dry, usually every 7-10 days | Pet-safe |
| Phalaenopsis violacea | Bright indirect light (just back from a sunny window) | When the bark mix is nearly dry, roughly every 5-7 days | Pet-safe |
| Phalaenopsis-type Dendrobium | Bright indirect light (just back from a sunny window) | Regularly through warm active growth; reduced over a short, cooler, drier winter | Pet-safe |
| Pheasant's Tail Grass | Bright indirect light (just back from a sunny window) | Every 7–14 days in the growing season; minimal in winter | Pet-safe |
| Philippe Vapelle Cranesbill | Bright indirect light (just back from a sunny window) | Moderate; water during extended dry spells | Mildly toxic to pets |
| Philippine Ceratostylis | Bright indirect light (just back from a sunny window) | When the top of the medium begins to feel barely dry, roughly every 5-7 days | Pet-safe |
| Philippine Wax Flower | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil begins to dry, roughly every 5-7 days | Mildly toxic to pets |
| Philodendron | Medium indirect light (a couple of metres from a window) | When the top 3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Philodendron 'Burle Marx Fantasy' | Bright indirect light (just back from a sunny window) | When top 2-5 cm of soil is dry, roughly weekly in summer | Toxic to pets |
| Philodendron 'Dean McDowell' | Bright indirect light (just back from a sunny window) | Roughly weekly in the growing season; let the top 30-50% of the mix dry first | Toxic to pets |
| Philodendron 'Florida Beauty' | Bright indirect light (just back from a sunny window) | Every 5-10 days; when the top 1-2 inches of mix dries out | Toxic to pets |
| Philodendron 'Florida Ghost' | Bright indirect light (just back from a sunny window) | Roughly every 5-7 days in the growing season; less in winter | Toxic to pets |
| Philodendron 'Florida Green' | Bright indirect light (just back from a sunny window) | Roughly weekly in spring/summer, every 10-14 days in winter | Toxic to pets |
| Philodendron 'Jungle Boogie' | Bright indirect light (just back from a sunny window) | Every 1-2 weeks | Toxic to pets |
| Philodendron 'Moonlight' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (1 inch) of soil is dry, roughly weekly in summer | Toxic to pets |
| Philodendron 'Prince of Orange' | Bright indirect light (just back from a sunny window) | When the top 2.5cm (1 inch) of soil is dry | Toxic to pets |
| Philodendron 'Ring of Fire' | Bright indirect light (just back from a sunny window) | Roughly every 7-9 days in spring and summer; less in winter | Toxic to pets |
| Philodendron 'White Princess' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (top inch) of mix is dry, roughly weekly in summer | Toxic to pets |
| Philodendron Andreanum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (1 in) of mix is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron atabapoense | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Atom | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Toxic to pets |
| Philodendron Autoclaw | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7 days | Toxic to pets |
| Philodendron Billietiae | Bright indirect light (just back from a sunny window) | Every 7-14 days in the growing season; roughly every 2-3 weeks in winter | Toxic to pets |
| Philodendron Bipennifolium (Horsehead) | Bright indirect light (just back from a sunny window) | When the top 2-5 cm (1-2 in) of mix is dry, roughly weekly in growth | Toxic to pets |
| Philodendron Birkin | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days in spring and summer | Toxic to pets |
| Philodendron Black Cardinal | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Philodendron Brandtianum (Silver Leaf) | Bright indirect light (just back from a sunny window) | Roughly weekly in growing season; less in winter | Toxic to pets |
| Philodendron Brasil | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Philodendron Burle Marx | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Callosum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days | Toxic to pets |
| Philodendron Camposportoanum | Bright indirect light (just back from a sunny window) | When the top 1-2 inches (2-5 cm) of soil are dry | Toxic to pets |
| Philodendron Cobra | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Corcovadense | Bright indirect light (just back from a sunny window) | When the top half of the substrate is dry, about weekly | Toxic to pets |
| Philodendron Cream Splash | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Dark Lord | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (1 in) of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Deja Vu | Medium indirect light (a couple of metres from a window) | When the top half of the soil is dry, about weekly | Toxic to pets |
| Philodendron Domesticum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron El Choco Red | Bright indirect light (just back from a sunny window) | Roughly weekly; when the top 2-3 in (5-7 cm) of mix is dry | Toxic to pets |
| Philodendron Elegans | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 6-9 days | Toxic to pets |
| Philodendron erubescens | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Erubescens Green | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (1 in) of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Fuzzy Petiole | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Philodendron Gabby | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Gigas | Bright indirect light (just back from a sunny window) | When the top 1-2 inches of mix are dry, roughly weekly in summer and less in winter | Toxic to pets |
| Philodendron Gloriosum | Bright indirect light (just back from a sunny window) | when top 2-5 cm of soil dry | Toxic to pets |
| Philodendron gloriosum 'Zebra' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Gloriosum Colombia | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Gloriosum Dark Form | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Glorious | Bright indirect light (just back from a sunny window) | When the top 3-4 cm (1-1.5 in) of mix is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Goeldii | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Golden Goddess | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Hastatum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron hederaceum 'Micans' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron hederaceum 'Rio' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron hederaceum 'Silver Stripe' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Hederaceum Heartleaf Variegata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Imperial Red | Bright indirect light (just back from a sunny window) | Every 7-10 days; when the top 2-3 cm (1 inch) of soil is dry | Toxic to pets |
| Philodendron Insigne | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 6-9 days | Toxic to pets |
| Philodendron Joepii | Bright indirect light (just back from a sunny window) | Every 1-2 weeks | Toxic to pets |
| Philodendron Jose Buono | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Lemon Lime | Bright indirect light (just back from a sunny window) | Every 7-10 days in growing season; less in winter | Toxic to pets |
| Philodendron Longilobatum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron luxurians | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Lynamii | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 6-9 days | Toxic to pets |
| Philodendron Majestic | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, about every 7-10 days | Toxic to pets |
| Philodendron Mamei | Bright indirect light (just back from a sunny window) | About once a week in spring and summer; less in winter | Toxic to pets |
| Philodendron Martianum | Bright indirect light (just back from a sunny window) | When the mix is nearly dry, about every 7-10 days | Toxic to pets |
| Philodendron Maximum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (1 in) of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron McColley's Finale | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Philodendron Melanochrysum | Bright indirect light (just back from a sunny window) | Roughly weekly; when the top 2-3 in (5-7 cm) of soil is nearly dry | Toxic to pets |
| Philodendron Melinonii | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Mexicanum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron micans | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Philodendron Moonshine | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7 days | Toxic to pets |
| Philodendron Nangaritense | Bright indirect light (just back from a sunny window) | When the top 3 cm of mix is dry, roughly every 5-8 days | Toxic to pets |
| Philodendron Painted Lady × erubescens | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7 days | Toxic to pets |
| Philodendron Panduriforme | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron paraiso verde | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Pastazanum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, about every 7-10 days | Toxic to pets |
| Philodendron Patriciae | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Pedatum (Oak Leaf) | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7 days in summer | Toxic to pets |
| Philodendron Pink Congo | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7 days | Toxic to pets |
| Philodendron Pink Princess | Bright indirect light (just back from a sunny window) | When the top 2.5cm of compost is dry, roughly weekly in summer | Toxic to pets |
| Philodendron Plowmanii | Bright indirect light (just back from a sunny window) | Every 1-2 weeks, when the top 1-2 inches of soil dry out | Toxic to pets |
| Philodendron Pseudoverrucosum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 6-9 days | Toxic to pets |
| Philodendron Pteromischum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, about every 7-10 days | Toxic to pets |
| Philodendron Radiatum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Rugosum (Pigskin) | Bright indirect light (just back from a sunny window) | Roughly weekly; when the top 2-3 cm (1 inch) of soil is dry | Toxic to pets |
| Philodendron Sagittifolium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (1 in) of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron scandens | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Selloum (Tree Philodendron) | Bright indirect light (just back from a sunny window) | When the top 2-3cm of compost feels dry, roughly weekly in summer | Toxic to pets |
| Philodendron Serpens (Fuzzy Petiole) | Bright indirect light (just back from a sunny window) | When the top 2-5 cm (1-2 in) of mix dries | Toxic to pets |
| Philodendron Sharoniae | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7 days | Toxic to pets |
| Philodendron Silver Sword | Bright indirect light (just back from a sunny window) | Roughly weekly in spring and summer; less in autumn and winter | Toxic to pets |
| Philodendron Sodiroi | Bright indirect light (just back from a sunny window) | Roughly once a week; allow the top 2-5 cm (1-2 in) of mix to dry between waterings | Toxic to pets |
| Philodendron Spiritus Sancti Silver | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 5-8 days | Toxic to pets |
| Philodendron splendid | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Squamiferum | Bright indirect light (just back from a sunny window) | When the top 2.5-5 cm (1-2 in) of soil dries out, roughly weekly in summer and every 10-14 days in winter | Toxic to pets |
| Philodendron subhastatum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Tenue | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (1 in) of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Tortum (Fernleaf) | Bright indirect light (just back from a sunny window) | When the top 3-5 cm (1-2 inches) of mix are dry, roughly every 5-7 days in summer and every 10-14 days in winter | Toxic to pets |
| Philodendron Tripartitum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7 days | Toxic to pets |
| Philodendron Verrucosum | Bright indirect light (just back from a sunny window) | Roughly weekly in the growing season; less in winter | Toxic to pets |
| Philodendron Warscewiczii | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Wendlandii | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm (1 in) of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron White Knight | Bright indirect light (just back from a sunny window) | Every 7-10 days in spring-summer; every 14-21 days in winter | Toxic to pets |
| Philodendron White Wizard | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Philodendron Xanadu | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost feels dry, roughly weekly in summer | Toxic to pets |
| Phoenix Moss | Medium indirect light (a couple of metres from a window) | Permanently submerged aquatic plant | Pet-safe |
| Phragmipedium 'Living Fire' | Bright indirect light (just back from a sunny window) | Keep constantly moist to wet; water every 1-3 days, often standing the pot in a shallow tray of clean water | Pet-safe |
| Phragmipedium besseae | Bright indirect light (just back from a sunny window) | Keep constantly moist to wet; water every 1-3 days and many growers stand the pot in 1-2 cm of clean water | Pet-safe |
| Phragmipedium caudatum | Bright indirect light (just back from a sunny window) | Keep the medium constantly moist, watering every 2-4 days as needed | Mildly toxic to pets |
| Phragmipedium Eric Young | Bright indirect light (just back from a sunny window) | Keep evenly moist at all times; water every 2-4 days or stand the pot in 1-2 cm of water | Pet-safe |
| Phragmipedium longifolium | Bright indirect light (just back from a sunny window) | Keep constantly moist; water every 1-3 days, often with the pot standing in a shallow tray of clean water | Pet-safe |
| Piaranthus geminatus | Bright indirect light (just back from a sunny window) | When soil is completely dry, roughly every 10-14 days in summer; keep nearly dry in winter | Mildly toxic to pets |
| Piaranthus punctatus | Bright indirect light (just back from a sunny window) | When soil is fully dry, about every 10-14 days in summer; keep nearly dry in winter | Mildly toxic to pets |
| Piccolo Banda Peperomia | Bright indirect light (just back from a sunny window) | Every 7-10 days; let the top 2-3cm (1 inch) dry out first | Pet-safe |
| Pickle Plant | Bright indirect light (just back from a sunny window) | Every 2–4 weeks; reduce to monthly or less in winter | Pet-safe |
| Pieris japonica Cavatine | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water when the top 3-4 cm is dry, about weekly while establishing | Toxic to pets |
| Pieris japonica Valley Rose | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water when the top 3-4 cm is dry, roughly weekly while establishing | Toxic to pets |
| Pierre's Stephania | Bright indirect light (just back from a sunny window) | Every 7–14 days in active growth; none in winter dormancy | Toxic to pets |
| Pig's Ear | Bright indirect light (just back from a sunny window) | When the soil is almost completely dry, roughly every 14 days in summer | Toxic to pets |
| Pigeon Orchid | Bright indirect light (just back from a sunny window) | Frequently in warm growth, allowing brief drying between waterings | Pet-safe |
| Pilalo Fuchsia | Bright indirect light (just back from a sunny window) | Freely in growth; reduce in winter | Pet-safe |
| Pilea 'Dark Mystery' | Bright indirect light (just back from a sunny window) | When the top inch of soil is dry, often 1-2 times per week | Pet-safe |
| Pilea 'Friendship' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-8 days | Pet-safe |
| Pilea 'Moon Valley' (Friendship Plant) | Bright indirect light (just back from a sunny window) | Roughly once or twice a week; let the top of the soil just begin to dry between waterings | Pet-safe |
| Pilea 'Silver Tree' (Pilea spruceana 'Silver Tree') | Bright indirect light (just back from a sunny window) | When the top 1 inch (2.5-3 cm) of soil is dry (roughly weekly in growth) | Pet-safe |
| Pilea aquarum | Medium indirect light (a couple of metres from a window) | Keep consistently moist; water when the surface just begins to dry, roughly every 3-5 days | Pet-safe |
| Pilea cadierei 'Minima' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Pilea cadierei 'Silver Tree' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Pet-safe |
| Pilea glauca 'Aquamarine' (Grey Baby Tears) | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil feels dry (roughly weekly in growth) | Pet-safe |
| Pilea grandifolia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Pilea involucrata | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Pilea involucrata 'Norfolk' | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Pilea libanensis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Pilea microphylla 'Variegata' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Pilea mollis | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Pilea nummuarlifolia 'Bunny Ears' | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Pilea nummulariifolia | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 4-7 days | Pet-safe |
| Pilea peperomioides 'Minima' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Pilea peperomioides 'Mojito' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Pilea peperomioides 'Sugar' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Pilea pubescens | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Pilea pubescens 'Silver Cloud' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Pilea pumila | Medium indirect light (a couple of metres from a window) | Keep consistently moist; check every 2-4 days | Pet-safe |
| Pilea serpyllacea | Bright indirect light (just back from a sunny window) | When the surface just begins to dry, roughly every 4-7 days | Pet-safe |
| Pine-scented Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Pineapple Bromeliad | Bright indirect light (just back from a sunny window) | every 7–10 days in summer, every 14–21 days in winter | Pet-safe |
| Pineapple Lily | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days during the growing season | Toxic to pets |
| Pineapple-Head Ginger | Medium indirect light (a couple of metres from a window) | Regular during the growing season; reduce in winter but do not allow complete drydown. | Mildly toxic to pets |
| Pinel's Aechmea | Bright indirect light (just back from a sunny window) | Every 2–3 weeks (soil); replenish central cup every 2–4 weeks | Pet-safe |
| Pinel's Aechmea | Bright indirect light (just back from a sunny window) | Refill the central cup every 5-7 days; water the medium when the top 2-3 cm is dry, roughly every 10-14 days | Pet-safe |
| Pinguicula 'Aphrodite' | Bright indirect light (just back from a sunny window) | Tray-water to keep the mix moist in growth; reduce for the drier winter rest | Mildly toxic to pets |
| Pinguicula 'Tina' | Bright indirect light (just back from a sunny window) | Keep lightly moist in summer; let the surface dry slightly between waterings in winter | Mildly toxic to pets |
| Pinguicula agnata | Bright indirect light (just back from a sunny window) | Keep the mix damp by tray-watering during growth; let it dry slightly in winter dormancy | Mildly toxic to pets |
| Pinguicula cyclosecta | Bright indirect light (just back from a sunny window) | Keep the medium damp via tray-watering in growth; nearly dry in winter dormancy | Mildly toxic to pets |
| Pinguicula Esseriana | Bright indirect light (just back from a sunny window) | Keep the gritty mix lightly moist in summer; let it dry considerably through the winter succulent phase | Mildly toxic to pets |
| Pinguicula Gigantea | Bright indirect light (just back from a sunny window) | Keep lightly moist in summer growth; let the surface dry slightly between waterings in the cooler 'winter succulent' phase | Mildly toxic to pets |
| Pinguicula laueana | Bright indirect light (just back from a sunny window) | Tray-water to keep the mix moist in summer; ease off for the dry winter rest | Mildly toxic to pets |
| Pinguicula lusitanica | Bright indirect light (just back from a sunny window) | Keep permanently wet; stand in shallow water at all times | Mildly toxic to pets |
| Pinguicula primuliflora | Bright indirect light (just back from a sunny window) | Keep permanently wet; stand in shallow water year-round, around 1-2 cm | Mildly toxic to pets |
| Pink Allusion Arrowhead Plant | Medium indirect light (a couple of metres from a window) | Every 7–10 days; allow the top 2–3 cm of soil to dry between waterings | Toxic to pets |
| Pink Anthurium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Pink Bower Vine | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; every 10–14 days in winter | Mildly toxic to pets |
| Pink Butterflies Kalanchoe | Bright indirect light (just back from a sunny window) | Every 2-3 weeks in summer; far less in winter | Toxic to pets |
| Pink Calla Lily | Bright indirect light (just back from a sunny window) | Frequently during active growth — keep soil consistently moist; reduce sharply after flowering | Toxic to pets |
| Pink Calla Lily | Bright indirect light (just back from a sunny window) | Keep evenly moist during active growth; water when the top 2 cm is dry | Toxic to pets |
| Pink Fawn Lily | Medium indirect light (a couple of metres from a window) | Regular watering in spring; minimal to none during summer dormancy | Mildly toxic to pets |
| Pink Fingers Orchid | Bright indirect light (just back from a sunny window) | Sparingly during active growth (autumn to spring); cease almost entirely during summer dormancy | Pet-safe |
| Pink Fittonia | Medium indirect light (a couple of metres from a window) | When the top 1 cm of soil is just barely dry, often every 3-5 days | Pet-safe |
| Pink Flowering Dogwood | Bright indirect light (just back from a sunny window) | Weekly deep watering; increase in summer heat | Pet-safe |
| Pink Hidden Ginger | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth | Mildly toxic to pets |
| Pink Kopsia | Bright indirect light (just back from a sunny window) | Every 3–5 days; keep soil consistently moist but not waterlogged | Toxic to pets |
| Pink Lady flowering quince | Bright indirect light (just back from a sunny window) | Weekly when establishing; fortnightly in dry weather once established | Mildly toxic to pets |
| Pink Moth Orchid | Bright indirect light (just back from a sunny window) | When the bark approaches dryness, typically every 7-10 days | Pet-safe |
| Pink Mountain Heath | Bright indirect light (just back from a sunny window) | Regular — maintain consistent moisture | Mildly toxic to pets |
| Pink Nerve Plant | Bright indirect light (just back from a sunny window) | Every 5–7 days; keep soil evenly moist | Pet-safe |
| Pink Panther episcia | Bright indirect light (just back from a sunny window) | Allow the top centimetre of soil to dry before watering — approximately every 5–7 days in the growing season. | Pet-safe |
| Pink Panther Restrepia | Medium indirect light (a couple of metres from a window) | Every 1–2 days; allow the medium to approach dryness but not fully dry | Pet-safe |
| Pink Penny Cranesbill | Bright indirect light (just back from a sunny window) | Water once or twice a week during dry periods; reduce in winter | Pet-safe |
| Pink Pewter Dead Nettle | Medium indirect light (a couple of metres from a window) | Every 7–10 days; increase in dry or sunny spells | Pet-safe |
| Pink Porcelain Lily | Bright indirect light (just back from a sunny window) | 2–3 times per week in summer; reduce in winter | Mildly toxic to pets |
| Pink Princess Philodendron | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Pink Quill | Bright indirect light (just back from a sunny window) | Mist 2-3 times per week; soak the medium sparingly | Mildly toxic to pets |
| Pink Quill Bromeliad | Bright indirect light (just back from a sunny window) | Mist thoroughly 2–3 times per week; soak in room-temperature water for 20–30 minutes once a week during active growth. | Pet-safe |
| Pink Rock Orchid | Bright indirect light (just back from a sunny window) | When the potting medium is nearly dry, roughly every 5-7 days in summer; reduce to every 14-21 days in winter to trigger blooming | Pet-safe |
| Pink Skyrocket Foamflower | Medium indirect light (a couple of metres from a window) | Once or twice per week during the growing season; reduce in autumn and winter. | Mildly toxic to pets |
| Pink Spot Begonia | Bright indirect light (just back from a sunny window) | Every 5–8 days, keeping soil evenly moist but not waterlogged | Toxic to pets |
| Pink Spur Flower | Medium indirect light (a couple of metres from a window) | Moderate — water when top 3 cm of soil dries out | Mildly toxic to pets |
| Pink Sundew | Bright indirect light (just back from a sunny window) | Tray method, continuously wet | Pet-safe |
| Pink Torch Ginger | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, roughly every 5-7 days in the growing season; every 12-14 days when cooler | Mildly toxic to pets |
| Pinnate Primulina | Medium indirect light (a couple of metres from a window) | Every 7–10 days, allowing the top 2 cm of soil to dry between waterings | Mildly toxic to pets |
| Pinstripe Calathea | Bright indirect light (just back from a sunny window) | Roughly weekly; keep soil lightly, evenly moist | Pet-safe |
| Pinstripe Calathea | Bright indirect light (just back from a sunny window) | Roughly weekly; when the top 2-3 cm of soil just begins to dry | Pet-safe |
| Pinwheel Flower | Bright indirect light (just back from a sunny window) | Once or twice per week during active growth; reduce in winter | Toxic to pets |
| Pires's Sinningia | Bright indirect light (just back from a sunny window) | Every 7–10 days in active growth; very sparingly during dormancy | Mildly toxic to pets |
| Pitcairnia flammea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Pet-safe |
| Pitcairnia-Leaved Fascicularia | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in summer | Mildly toxic to pets |
| Pitcher plant 'Ventrata' | Bright indirect light (just back from a sunny window) | Keep the media constantly moist — top up every few days, never let it dry out | Mildly toxic to pets |
| Pitcher Sage | Medium indirect light (a couple of metres from a window) | Every 2–4 weeks once established; deep water at planting | Mildly toxic to pets |
| Pixie Lime Peperomia | Bright indirect light (just back from a sunny window) | When the top 2.5-4 cm (1-1.5 in) of mix is dry, often every 7-12 days | Pet-safe |
| PJM rhododendron | Bright indirect light (just back from a sunny window) | Weekly during establishment and dry spells; every 2 weeks once established | Toxic to pets |
| Plaid Cactus | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in growth; minimal in winter | Pet-safe |
| Plane-leaf Begonia | Medium indirect light (a couple of metres from a window) | Every 7–10 days in spring and summer; every 14–18 days in winter | Toxic to pets |
| Plantain-leaved Pussytoes | Bright indirect light (just back from a sunny window) | Low; drought-tolerant once established | Pet-safe |
| Plastic Plant Orchid | Bright indirect light (just back from a sunny window) | Every 4–7 days in growth; every 10–14 days in winter | Pet-safe |
| Pleated Snowdrop | Medium indirect light (a couple of metres from a window) | Weekly during active growth (late winter–spring); minimal in summer dormancy | Toxic to pets |
| Plectranthus Oertendahlii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Plectranthus scutellarioides 'Black Dragon' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, often every 2-4 days in summer | Toxic to pets |
| Plectranthus scutellarioides 'Freckles' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 2-4 days in summer | Toxic to pets |
| Plectranthus scutellarioides 'Kong Rose' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 2-4 days in summer | Toxic to pets |
| Plectranthus scutellarioides 'Rainbow Festive Dance' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 2-4 days in summer | Toxic to pets |
| Plectranthus scutellarioides 'Wizard Scarlet' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 2-4 days in summer | Toxic to pets |
| Pleione bulbocodioides | Bright indirect light (just back from a sunny window) | Regularly during active leaf growth; reduce sharply to nearly dry through winter dormancy | Pet-safe |
| Pleione formosana | Bright indirect light (just back from a sunny window) | Regularly when in leaf and growth; reduce to occasional misting and near-dry during winter dormancy | Pet-safe |
| Pleione speciosa | Bright indirect light (just back from a sunny window) | Regularly while in leaf and growth; cut back to nearly dry during winter dormancy | Pet-safe |
| Plover Eggs | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in the growing season (spring–autumn); once a month or less in winter | Pet-safe |
| Plum Pudding Heuchera | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, about weekly | Pet-safe |
| Plumed Palm | Bright indirect light (just back from a sunny window) | Every 5–7 days in the growing season; every 10–14 days in cooler months | Pet-safe |
| Plumose Shield Fern | Medium indirect light (a couple of metres from a window) | Every 5–7 days in active growth; every 10–14 days in winter | Pet-safe |
| Plumose Soft Shield Fern | Medium indirect light (a couple of metres from a window) | Regular; keep moist but well-drained | Pet-safe |
| Pochutla Chamaedorea | Medium indirect light (a couple of metres from a window) | Every 7–14 days (allow top 2 in to dry between waterings) | Pet-safe |
| Podocarpus 'Maki' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Podophylla Rodgersia | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; water deeply 1-2 times weekly, more in heat | Mildly toxic to pets |
| Poet's Narcissus | Bright indirect light (just back from a sunny window) | Moderate to regular during growth; tolerates more moisture than most narcissi; drier in summer | Toxic to pets |
| Pogostemon erectus | Bright indirect light (just back from a sunny window) | Permanently submerged; 25-50% weekly water changes | Mildly toxic to pets |
| Pogostemon helferi | Bright indirect light (just back from a sunny window) | Permanently submerged; 25-50% weekly water changes | Mildly toxic to pets |
| Pogostemon stellatus | Bright indirect light (just back from a sunny window) | Permanently submerged; 25-50% weekly water changes | Mildly toxic to pets |
| Pohl's Air Plant | Bright indirect light (just back from a sunny window) | Soak for 20–30 minutes once per week, or mist thoroughly 2–3 times per week; reduce frequency in cool winter months. | Pet-safe |
| Poinsettia | Bright indirect light (just back from a sunny window) | When the top of the soil feels dry | Toxic to pets |
| Pointed-Cap Ginger | Medium indirect light (a couple of metres from a window) | Regularly; maintain consistently moist soil year-round | Mildly toxic to pets |
| Pointed-Leaf Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Pointed-Leaf Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer; every 3–4 weeks in winter | Pet-safe |
| Poiret's Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 3–4 days in summer, every 5–7 days in winter | Pet-safe |
| Poison Lagenandra | Medium indirect light (a couple of metres from a window) | Keep roots permanently moist or submerged; do not allow to dry out | Toxic to pets |
| Poisson's Nephthytis | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Poke Milkweed | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water during dry spells, especially in sunnier sites | Toxic to pets |
| Poker alumroot | Bright indirect light (just back from a sunny window) | Every 7–14 days once established; more frequent when young | Pet-safe |
| Polished Air Plant | Bright indirect light (just back from a sunny window) | Mist thoroughly 2–3 times per week, or soak briefly once per week in warm conditions; reduce in winter. | Pet-safe |
| Polka dot begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in summer and every 10-14 days in winter | Toxic to pets |
| Polka Dot Begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Toxic to pets |
| Polka dot plant | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, every 4-7 days | Pet-safe |
| Polka Dot Plant | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil feels dry, roughly every 5-7 days in the growing season | Pet-safe |
| Polka Dot Plant 'Splash Select Red' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is just drying, often every 3-5 days | Pet-safe |
| Polynesian Davallia | Bright indirect light (just back from a sunny window) | Every 5–7 days in summer, every 10–14 days in winter | Pet-safe |
| Polypodium cambricum | Bright indirect light (just back from a sunny window) | Water during its winter growing season when the top few cm dry; keep drier in summer dormancy | Mildly toxic to pets |
| Polypodium cambricum 'Cambricum' | Bright indirect light (just back from a sunny window) | Water through its autumn-to-spring growing season when the top few cm dry; keep drier in summer | Mildly toxic to pets |
| Polypody Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of medium is dry, roughly every 7-10 days | Pet-safe |
| Pompona Vanilla | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of the growing medium feels dry, roughly every 7-10 days in summer | Pet-safe |
| Porphyrocoma pohliana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Mildly toxic to pets |
| Portea petropolitana | Bright indirect light (just back from a sunny window) | Keep a little water in the central cup; flush and refill every 1-2 weeks | Pet-safe |
| Portella Ruellia | Medium indirect light (a couple of metres from a window) | Every 5–7 days during the growing season; reduce in winter | Mildly toxic to pets |
| Potbelly Air Plant | Bright indirect light (just back from a sunny window) | Mist 2–3 times per week; the bulbous base dries faster than larger species so check moisture more frequently in hot, dry weather. | Pet-safe |
| Pothos | Medium indirect light (a couple of metres from a window) | When the top half of the soil is dry, every 7-10 days | Toxic to pets |
| Pothos 'Shangri La' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-12 days | Toxic to pets |
| Pothos Happy Leaf | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, about every 7-14 days | Toxic to pets |
| Pothos N'Joy | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Pothos Pearls and Jade | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Potts Wax Plant | Bright indirect light (just back from a sunny window) | Every 7-10 days in summer; every 14-21 days in winter | Pet-safe |
| Pouch Flower | Medium indirect light (a couple of metres from a window) | When the top of the compost begins to feel barely dry | Mildly toxic to pets |
| Pouch-Flowered Pearcea | Bright indirect light (just back from a sunny window) | Every 6–8 days during active growth; reduce in winter dormancy | Pet-safe |
| Powdery Echeveria | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 12-16 days; it is unusually drought-tolerant | Pet-safe |
| Powdery Spiral Ginger | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days during active growth | Mildly toxic to pets |
| Powdery Strap Airplant | Bright indirect light (just back from a sunny window) | Keep 1-2 cm of water in the central cup at all times; refresh weekly | Pet-safe |
| Prairie Bluebells | Bright indirect light (just back from a sunny window) | Water sparingly once established; once per week during the flowering period, far less once the plant enters summer dormancy. | Mildly toxic to pets |
| Prairie Trillium | Medium indirect light (a couple of metres from a window) | Water regularly to keep soil evenly moist during spring growing season; reduce significantly once dormant in midsummer | Mildly toxic to pets |
| Prairie Violet | Bright indirect light (just back from a sunny window) | Fortnightly or less once established; drought-tolerant | Pet-safe |
| Prayer plant | Medium indirect light (a couple of metres from a window) | When the top 1 cm of soil is just dry, every 4-6 days | Pet-safe |
| Preston Palm | Bright indirect light (just back from a sunny window) | Every 4–7 days; containers may need more frequent checking in summer heat | Pet-safe |
| Preston's Palm | Bright indirect light (just back from a sunny window) | Every 4–7 days; containers may need checking more frequently in summer heat | Pet-safe |
| Pretty Peacock Ginger | Medium indirect light (a couple of metres from a window) | Regular during the growing season (spring to autumn); minimal to none in winter | Pet-safe |
| Pretty Trichocentrum | Bright indirect light (just back from a sunny window) | When the top of the bark is dry, roughly every 7-9 days; slightly drier in winter | Pet-safe |
| Prickly Crossandra | Bright indirect light (just back from a sunny window) | Every 5–7 days in growing season; reduce to every 10–14 days in winter | Pet-safe |
| Prickly heath | Bright indirect light (just back from a sunny window) | Regular; keep evenly moist | Toxic to pets |
| Prickly Heath Bell's Seedling | Bright indirect light (just back from a sunny window) | Regularly during the growing season; keep soil moist | Mildly toxic to pets |
| Prickly Shield Fern | Medium indirect light (a couple of metres from a window) | Weekly; drought-tolerant once established | Pet-safe |
| Pride of Brazil Orchid | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth (spring–summer); every 14–21 days during the winter rest | Pet-safe |
| Prima Donna Magic Flower | Bright indirect light (just back from a sunny window) | Every 3–5 days during active growth; withhold entirely during dormancy | Pet-safe |
| Primrose | Medium indirect light (a couple of metres from a window) | Weekly watering | Toxic to pets |
| Primrose Huernia | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in summer; monthly or less in winter | Mildly toxic to pets |
| Primrose-Flower Begonia | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of compost begins to dry, roughly every 5-8 days in growth | Toxic to pets |
| primrose-leaf cape primrose | Medium indirect light (a couple of metres from a window) | Every 7–10 days; keep evenly moist but never waterlogged | Pet-safe |
| Primrose-leaf Streptocarpus | Medium indirect light (a couple of metres from a window) | every 5–8 days in the growing season, every 10–14 days in winter | Pet-safe |
| Primula × polyantha | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil starts to dry, roughly every 3-5 days | Toxic to pets |
| Primula farinosa | Bright indirect light (just back from a sunny window) | Keep evenly moist in growth; water whenever the surface dries | Toxic to pets |
| Primula japonica | Bright indirect light (just back from a sunny window) | Keep wet at all times; never let the soil dry out | Toxic to pets |
| Primula malacoides | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil starts to dry, roughly every 3-5 days | Toxic to pets |
| Primula Obconica | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 3-5 days while flowering | Mildly toxic to pets |
| Primulina 'Dreamtime' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 7-10 days | Mildly toxic to pets |
| Primulina 'Loki' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Mildly toxic to pets |
| Primulina 'Patina' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-12 days | Mildly toxic to pets |
| Primulina (Chirita) | Bright indirect light (just back from a sunny window) | When the top of the soil feels dry | Mildly toxic to pets |
| Primulina heterotricha | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 7-10 days | Mildly toxic to pets |
| Primulina linearifolia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Mildly toxic to pets |
| Primulina tamiana | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, about every 5-8 days | Mildly toxic to pets |
| Prince Albert's Yew | Bright indirect light (just back from a sunny window) | Keep evenly moist; water deeply during dry spells and avoid letting the rootball dry out | Mildly toxic to pets |
| Prince Masdevallia | Medium indirect light (a couple of metres from a window) | Daily to every 2 days; medium should remain evenly moist at all times | Pet-safe |
| Prism-fruit Prosthechea | Bright indirect light (just back from a sunny window) | When the top of the bark dries, roughly every 7-10 days in growth; every 10-14 days in winter | Pet-safe |
| Proliferous Pleurothallis | Medium indirect light (a couple of metres from a window) | When the medium surface just starts to dry, roughly every 4-6 days | Pet-safe |
| Prostrate Raphionacme | Bright indirect light (just back from a sunny window) | Weekly during active growth; monthly or less in dormancy | Mildly toxic to pets |
| Protruding Air Plant | Bright indirect light (just back from a sunny window) | 2–3 times per week misting, or a 20-minute soak once a week | Pet-safe |
| Przewalski's Leopard Plant | Medium indirect light (a couple of metres from a window) | Every 3-5 days in the growing season; soil should remain evenly moist to slightly wet | Mildly toxic to pets |
| Przewalskii Ligularia | Medium indirect light (a couple of metres from a window) | Keep constantly moist; water deeply 2-3 times weekly, more in heat | Mildly toxic to pets |
| Pseuderanthemum atropurpureum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Mildly toxic to pets |
| Pseuderanthemum carruthersii | Bright indirect light (just back from a sunny window) | Water when the top 2-3 cm of soil is dry, about every 7-10 days | Mildly toxic to pets |
| Pseuderanthemum carruthersii var. carruthersii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Mildly toxic to pets |
| Pseudodracontium lacourii | Bright indirect light (just back from a sunny window) | Keep evenly moist in active growth, watering when the top 2-3 cm dries; keep nearly dry while the tuber is dormant | Toxic to pets |
| Pseudolithos cubiformis | Bright indirect light (just back from a sunny window) | Very sparingly; only when fully dry and the body begins to soften, roughly every 2-3 weeks in warm growth | Mildly toxic to pets |
| Pseudolithos migiurtinus | Bright indirect light (just back from a sunny window) | Very sparingly; only when fully dry, roughly every 2-3 weeks in warm growth | Mildly toxic to pets |
| Ptychosperma Elegans | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Mildly toxic to pets |
| pubescent bladderwort | Medium indirect light (a couple of metres from a window) | Keep media permanently moist; do not allow to dry out | Pet-safe |
| Puebla Air Plant | Bright indirect light (just back from a sunny window) | Soak 20–30 minutes once a week; mist 2–3 times weekly in dry conditions | Pet-safe |
| Puerto Rican Columnea | Bright indirect light (just back from a sunny window) | Water thoroughly, then allow the top 2–3 cm to dry before re-watering; roughly every 7 days in summer | Pet-safe |
| Puerto Rican Guzmania | Bright indirect light (just back from a sunny window) | Refresh cup weekly; mist in dry weather | Pet-safe |
| Purple Air Plant | Bright indirect light (just back from a sunny window) | Soak 20–30 minutes once a week; mist sparingly 1–2 times weekly | Pet-safe |
| Purple Bacopa | Bright indirect light (just back from a sunny window) | Fully submerged aquatic plant; maintain in aquarium water continuously | Pet-safe |
| Purple Bergenia | Medium indirect light (a couple of metres from a window) | Every 7-14 days; relatively drought-tolerant once established | Mildly toxic to pets |
| Purple Bladderwort | Bright indirect light (just back from a sunny window) | Fully aquatic — kept submerged or floating in distilled, rainwater, or very low-mineral water at all times | Pet-safe |
| Purple Bugle | Medium indirect light (a couple of metres from a window) | Moderate; consistent moisture preferred | Mildly toxic to pets |
| Purple Cliff Brake Fern | Bright indirect light (just back from a sunny window) | When the soil is nearly dry throughout, roughly every 10-14 days in summer | Pet-safe |
| Purple Cyclamen | Medium indirect light (a couple of metres from a window) | Low in summer, moderate during active growth (late summer to spring) | Toxic to pets |
| Purple Dragon Dead Nettle | Medium indirect light (a couple of metres from a window) | Every 7–10 days; water more frequently in hot, dry periods | Pet-safe |
| Purple Giant Hyssop | Bright indirect light (just back from a sunny window) | Every 5–7 days; tolerates periodic wet spells | Pet-safe |
| Purple Heart | Bright indirect light (just back from a sunny window) | When the top inch of soil dries out, roughly weekly in summer and every 2 weeks in winter | Toxic to pets |
| Purple Heartleaf Bergenia | Medium indirect light (a couple of metres from a window) | Every 7–10 days during active growth; minimal in winter | Pet-safe |
| Purple Moor Grass | Bright indirect light (just back from a sunny window) | Regular; do not allow to dry out completely | Pet-safe |
| Purple Mountain Heath | Bright indirect light (just back from a sunny window) | Regular — keep consistently moist but never waterlogged | Mildly toxic to pets |
| Purple Mountain Saxifrage | Bright indirect light (just back from a sunny window) | Every 5–7 days during the growing season; maintain slight moisture at all times | Pet-safe |
| Purple Passion Plant | Bright indirect light (just back from a sunny window) | Every 7 days in spring/summer; every 10–14 days in autumn/winter | Pet-safe |
| Purple Roscoea | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry during the growing season, roughly every 10-14 days; minimal to none in winter | Mildly toxic to pets |
| Purple Royal Fern | Medium indirect light (a couple of metres from a window) | Freely and consistently — never allow to dry out | Pet-safe |
| Purple Royal Fern | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist to wet; may need watering every 2-3 days in summer heat | Pet-safe |
| Purple Saxifrage | Bright indirect light (just back from a sunny window) | Water sparingly; allow soil to nearly dry between waterings in summer. | Pet-safe |
| Purple Seemannia | Bright indirect light (just back from a sunny window) | Every 4–5 days in growth; every 10–14 days in partial dormancy | Mildly toxic to pets |
| Purple Siberian Melic | Bright indirect light (just back from a sunny window) | Every 1–2 weeks during the growing season | Pet-safe |
| Purple Stelis | Medium indirect light (a couple of metres from a window) | Every 2–3 days in active growth; reduce slightly in cooler months | Pet-safe |
| Purple Waffle Plant | Bright indirect light (just back from a sunny window) | Every 5–7 days; keep soil consistently moist | Pet-safe |
| Purple-Brown Wax Plant | Bright indirect light (just back from a sunny window) | Every 7-14 days in spring and summer; every 14-21 days in winter | Pet-safe |
| Purple-flowered Sage | Bright indirect light (just back from a sunny window) | Moderate; water when the top 3–5 cm of soil is dry | Mildly toxic to pets |
| Purple-leaf Pepper | Bright indirect light (just back from a sunny window) | When the top 1–2 cm of soil feel dry, roughly every 5–8 days in summer | Mildly toxic to pets |
| Purple-Top Germander | Bright indirect light (just back from a sunny window) | Weekly to fortnightly in summer; reduce in autumn and winter | Mildly toxic to pets |
| Pusillus Miniature Sweet Flag | Bright indirect light (just back from a sunny window) | Keep constantly moist to wet; water whenever the surface starts to dry, every 2-4 days in pots | Mildly toxic to pets |
| Pussy Ears Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days; allow the top half of the soil to dry out between waterings | Pet-safe |
| Pussy Ears Plant | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 10-14 days in summer | Mildly toxic to pets |
| Pygmy Bamboo | Bright indirect light (just back from a sunny window) | 2–3 times per week in growing season, once per week in winter | Pet-safe |
| Pygmy Cactus | Bright indirect light (just back from a sunny window) | When soil is dry, about every 7-10 days in growth; keep dry in winter | Pet-safe |
| Pygmy Date Palm | Bright indirect light (just back from a sunny window) | Keep evenly moist in growth; reduce in winter | Pet-safe |
| Pygmy Date Palm 'Trifurcata' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in growth | Pet-safe |
| Pyramidal Bugle | Bright indirect light (just back from a sunny window) | Every 10–14 days; minimal irrigation once established | Mildly toxic to pets |
| Pyrenean Lily | Bright indirect light (just back from a sunny window) | Weekly during active growth; reduce after flowering | Toxic to pets |
| Pyrenean Ramonda | Medium indirect light (a couple of metres from a window) | Once or twice a week in the growing season; minimal in winter | Pet-safe |
| Pyrenean Saxifrage | Bright indirect light (just back from a sunny window) | Water sparingly; keep roots just moist in summer and very dry in winter. | Pet-safe |
| Pyrenean Star of Bethlehem | Bright indirect light (just back from a sunny window) | Low to moderate during growth; dry in summer dormancy | Toxic to pets |
| Pyrrosia hastata | Bright indirect light (just back from a sunny window) | When soil is nearly dry throughout, roughly every 7-12 days | Mildly toxic to pets |
| Pyrrosia piloselloides | Bright indirect light (just back from a sunny window) | When the mount or mix is nearly dry, roughly every 4-7 days | Mildly toxic to pets |
| Queen Anthurium | Bright indirect light (just back from a sunny window) | When the top of the medium approaches dryness (often every 5-7 days in growth; every 2-3 weeks in winter) | Toxic to pets |
| Queen Cattleya | Bright indirect light (just back from a sunny window) | Every 5–7 days in growth; reduce to every 14–21 days during the dry rest after pseudobulb maturation | Pet-safe |
| Queen Lily | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry during the growing season, roughly every 5-7 days | Mildly toxic to pets |
| Queen Mary Bromeliad | Bright indirect light (just back from a sunny window) | 1–2 times per week in summer | Pet-safe |
| Queen of Hearts Plant | Medium indirect light (a couple of metres from a window) | Every 7–10 days in the growing season; every 14 days in winter | Toxic to pets |
| Queen of Orchids | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; reduce to every 14–21 days during autumn-winter rest | Pet-safe |
| Queen of the Night | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days in summer; every 3-4 weeks in winter | Pet-safe |
| Queen of the Prairie | Bright indirect light (just back from a sunny window) | Frequently — keep soil consistently moist | Mildly toxic to pets |
| Queen Olga's Snowdrop | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry during active growth, roughly every 7-10 days | Toxic to pets |
| Queen Sago | Bright indirect light (just back from a sunny window) | When the top few centimetres are dry, roughly every 7-12 days in growth | Toxic to pets |
| Queen's Spiderwort | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Queen's Tears | Bright indirect light (just back from a sunny window) | Keep the central cup topped up; let the potting mix dry slightly between waterings (roughly weekly in growth, less in winter) | Mildly toxic to pets |
| Quehl's Chin Cactus | Bright indirect light (just back from a sunny window) | When soil is completely dry, roughly every 10-14 days in the growing season; once every 4-6 weeks in winter | Pet-safe |
| Quehlianum Chin Cactus | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in active growth; none in winter | Pet-safe |
| Quelch's Bladderwort | Bright indirect light (just back from a sunny window) | Keep sphagnum constantly moist during active growth; reduce slightly in winter rest period | Mildly toxic to pets |
| Quesnel's Bromeliad | Bright indirect light (just back from a sunny window) | Top up tank every 5–7 days; soil every 10–14 days | Pet-safe |
| Quesnelia marmorata | Bright indirect light (just back from a sunny window) | Keep the central tank filled; water the mix when its top 3-4 cm is dry | Pet-safe |
| Quesnelia testudo | Bright indirect light (just back from a sunny window) | Keep the central tank filled; water the mix when its top 3-4 cm is dry | Pet-safe |
| Quila Bamboo | Medium indirect light (a couple of metres from a window) | Weekly to twice weekly during growing season; reduce in winter | Pet-safe |
| Rabbit Foot Fern 'Plumosa' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is just dry, roughly every 5-7 days | Pet-safe |
| Rabbit Foot Prayer Plant | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil feels dry, roughly every 7-10 days in summer | Pet-safe |
| Rabbit's foot fern | Bright indirect light (just back from a sunny window) | When the top 1 cm (about half an inch) is dry, roughly every 5-7 days in growth | Pet-safe |
| Rabbit's Foot Prayer Plant | Bright indirect light (just back from a sunny window) | Roughly weekly; when the top 1-2 cm of soil feels dry | Pet-safe |
| Raceme Dancing Ginger | Medium indirect light (a couple of metres from a window) | 1–2 times per week in active growth; stop in winter | Mildly toxic to pets |
| Raceme Masdevallia | Medium indirect light (a couple of metres from a window) | Daily or every 1-2 days; medium should not dry out between waterings | Pet-safe |
| Racine's Vriesea | Bright indirect light (just back from a sunny window) | Refresh cup every 7–10 days; medium every 2 weeks | Pet-safe |
| Radicalis Palm | Medium indirect light (a couple of metres from a window) | Every 7–10 days in growing season; every 14–21 days in winter | Pet-safe |
| Ragged Robin | Bright indirect light (just back from a sunny window) | High; keep consistently moist | Mildly toxic to pets |
| Rainbow Leucothoe | Medium indirect light (a couple of metres from a window) | Every 5–7 days in the growing season; do not allow to dry out | Toxic to pets |
| Raindrop Peperomia | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, often roughly weekly in the growing season | Pet-safe |
| Rainforest Plum | Bright indirect light (just back from a sunny window) | Water 2–3 times per week in the growing season; once every 7–10 days in cooler months. | Pet-safe |
| rainha do abismo | Bright indirect light (just back from a sunny window) | Every 7–10 days in active growth; allow near-dry dormancy in winter | Pet-safe |
| Raja Begonia | Medium indirect light (a couple of metres from a window) | Keep the compost consistently lightly moist; check every 3-5 days | Toxic to pets |
| Rambling Sundew | Bright indirect light (just back from a sunny window) | Tray method during winter growing season (June–November); completely dry summer dormancy (December–May in the southern hemisphere) | Mildly toxic to pets |
| Rat Tail Cactus | Bright indirect light (just back from a sunny window) | Every 1–2 weeks in spring and summer; every 3–4 weeks in winter | Pet-safe |
| Rat Tail Cactus | Bright indirect light (just back from a sunny window) | Every 1-2 weeks in spring/summer; sparingly in winter | Mildly toxic to pets |
| Rattlesnake Fern | Medium indirect light (a couple of metres from a window) | Moderate — consistently moist but never waterlogged | Mildly toxic to pets |
| Rattlesnake plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is just dry, roughly every 5-7 days in summer and every 10-14 days in winter | Pet-safe |
| Rattlesnake Plant | Bright indirect light (just back from a sunny window) | Every 5-7 days in spring/summer; less in winter | Pet-safe |
| Rattlesnake Plant | Medium indirect light (a couple of metres from a window) | Every 7–10 days in spring/summer; every 10–14 days in autumn/winter | Pet-safe |
| Rattlesnake Plant | Medium indirect light (a couple of metres from a window) | Water when the top 2-3 cm of soil is just dry, roughly every 5-7 days | Pet-safe |
| Ravenea Glauca | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Rayed Prosthechea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of bark is dry, roughly every 7-10 days | Pet-safe |
| Recurved Leucothoe | Medium indirect light (a couple of metres from a window) | Regularly; maintain consistently moist soil throughout the growing season | Toxic to pets |
| Red Arrow Arrowhead Vine | Medium indirect light (a couple of metres from a window) | Every 7–10 days in growth; every 10–14 days in winter | Toxic to pets |
| Red Baneberry | Medium indirect light (a couple of metres from a window) | 2–3 times per week in growing season; weekly when dormant | Toxic to pets |
| Red Barrenwort | Medium indirect light (a couple of metres from a window) | Weekly during establishment; established plants need watering only during extended summer drought | Mildly toxic to pets |
| Red Beauty Japanese Painted Fern | Medium indirect light (a couple of metres from a window) | 2–3 times per week in growing season, reduce in winter | Pet-safe |
| Red Campion | Medium indirect light (a couple of metres from a window) | Moderate; keep moist | Mildly toxic to pets |
| Red Ceratostylis | Bright indirect light (just back from a sunny window) | When the surface of the medium begins to dry, roughly every 4-6 days | Pet-safe |
| Red Fescue | Bright indirect light (just back from a sunny window) | Infrequent — drought-tolerant once established | Pet-safe |
| Red Fittonia | Medium indirect light (a couple of metres from a window) | When the top 1 cm of soil is just barely dry, often every 3-5 days | Pet-safe |
| Red Ginger | Bright indirect light (just back from a sunny window) | Every 3–5 days in the growing season; reduce in cooler months | Pet-safe |
| Red Groove Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days in the growing season; every 2–3 weeks in winter | Pet-safe |
| Red Iochroma | Bright indirect light (just back from a sunny window) | Every 5-7 days in growth, every 10-14 days in winter | Toxic to pets |
| Red Kohleria | Bright indirect light (just back from a sunny window) | Every 7–10 days in the growing season, allowing the top 2–3 cm to dry; water sparingly in winter | Mildly toxic to pets |
| Red Mistletoe Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| red nerve plant | Medium indirect light (a couple of metres from a window) | Every 5–10 days; water when top 1–2 cm of soil is dry | Pet-safe |
| Red Nerve Plant | Bright indirect light (just back from a sunny window) | Every 5–7 days; keep soil evenly moist | Pet-safe |
| Red Nerve Plant | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil begins to feel dry, roughly every 5-7 days | Pet-safe |
| Red Orchid Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Red Osier Dogwood | Bright indirect light (just back from a sunny window) | Regularly; keep soil consistently moist | Pet-safe |
| Red Polka Dot Plant | Bright indirect light (just back from a sunny window) | Every 5–7 days; slightly less in winter | Pet-safe |
| Red Prayer Plant | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil feels dry, roughly every 5-7 days in growth | Pet-safe |
| Red Sentinel Astilbe | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; water every 3-5 days in summer, more in heat or containers | Pet-safe |
| Red Sheep Laurel | Bright indirect light (just back from a sunny window) | Moderate; keep moist | Toxic to pets |
| Red Spiral Ginger | Medium indirect light (a couple of metres from a window) | Freely in growing season; sparingly in winter | Mildly toxic to pets |
| Red Stem Ginger Lily | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil feels dry, roughly every 5-7 days in summer; every 14 days in winter | Mildly toxic to pets |
| Red Stem Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; every 2–3 weeks in winter | Pet-safe |
| Red Ti Plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Red Tower Ginger | Bright indirect light (just back from a sunny window) | Regular; keep soil consistently moist in growing season | Mildly toxic to pets |
| Red Tower Ginger | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, approximately every 5-7 days in the growing season; every 10-14 days in cooler months | Mildly toxic to pets |
| Red Trillium | Medium indirect light (a couple of metres from a window) | Weekly during spring; reduce as plant goes dormant in midsummer | Mildly toxic to pets |
| Red Veined Prayer Plant | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Red-bristled Dragon Orchid | Medium indirect light (a couple of metres from a window) | Every 2–3 days; roots must not dry out | Pet-safe |
| Red-fingered Vriesea | Bright indirect light (just back from a sunny window) | Refill cup every 7 days; flush every 3–4 weeks | Pet-safe |
| Red-Fleshed Dragon Fruit | Bright indirect light (just back from a sunny window) | Water when the top 3-5 cm of soil is dry, roughly every 7-10 days in growth; reduce in winter | Pet-safe |
| Red-Leaved Spiral Ginger | Medium indirect light (a couple of metres from a window) | Keep consistently moist; water when the top 1–2 cm of soil begins to feel dry. | Mildly toxic to pets |
| Red-lipped Habenaria | Bright indirect light (just back from a sunny window) | Keep consistently moist during active growth, roughly every 3-5 days | Pet-safe |
| Red-Margined Heliconia | Bright indirect light (just back from a sunny window) | 2-3 times per week in active growth; reduce in cool or dormant periods | Mildly toxic to pets |
| Red-petal Lepanthes | Medium indirect light (a couple of metres from a window) | Daily misting or watering every 1-2 days; never allow to dry | Pet-safe |
| Red-Silk Begonia | Bright indirect light (just back from a sunny window) | When the top 2–3 cm of soil dries out, roughly every 7–10 days | Toxic to pets |
| Red-stemmed Sensitive Fern | Medium indirect light (a couple of metres from a window) | Keep soil continuously moist to wet; water every 2–3 days or more in dry spells | Mildly toxic to pets |
| red-twig dogwood | Bright indirect light (just back from a sunny window) | Weekly when young; tolerates both wet and dry once established | Mildly toxic to pets |
| Reddish Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days (allow soil to dry out fully) | Pet-safe |
| Redvein Abutilon | Bright indirect light (just back from a sunny window) | Regularly in growth; reduced in winter | Mildly toxic to pets |
| Redvein enkianthus | Bright indirect light (just back from a sunny window) | Weekly during the growing season; reduce to every 2–3 weeks in winter | Mildly toxic to pets |
| Redvein Enkianthus Red Bells | Bright indirect light (just back from a sunny window) | Regularly during the growing season; reduce in winter | Mildly toxic to pets |
| Reed-stem orchid | Bright indirect light (just back from a sunny window) | Every 4-5 days in warm growth; about weekly when cool | Pet-safe |
| Regal Anthurium | Bright indirect light (just back from a sunny window) | Every 5-9 days in growth; water when the top 2-3 cm has dried | Toxic to pets |
| Regal Elkhorn Fern | Bright indirect light (just back from a sunny window) | Soak when the root mass nears dry, roughly every 7-14 days | Pet-safe |
| Regal Staghorn Fern | Bright indirect light (just back from a sunny window) | When the shield fronds feel dry to the touch or the mounted board is very light, soak every 7-14 days | Pet-safe |
| Regel's Nidularium | Medium indirect light (a couple of metres from a window) | Weekly cup refill; medium barely moist | Pet-safe |
| Regnell's Miltonia | Bright indirect light (just back from a sunny window) | Every 3–4 days in growth, reduce in winter | Pet-safe |
| Reichenbach's Air Plant | Bright indirect light (just back from a sunny window) | Soak 20–30 minutes once a week; mist 2–3 times weekly | Pet-safe |
| Reichenbach's Masdevallia | Medium indirect light (a couple of metres from a window) | Daily in warm weather; every 2–3 days in cooler months | Pet-safe |
| Reinwardtii Haworthia | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Reitz's sinningia | Bright indirect light (just back from a sunny window) | Every 7–10 days in active growth; cease in dormancy | Pet-safe |
| Related Columnea | Medium indirect light (a couple of metres from a window) | When top 2–3 cm of mix dries | Pet-safe |
| Remote Air Plant | Bright indirect light (just back from a sunny window) | Soak 20–30 minutes once a week; mist 2–3 times weekly between soaks | Pet-safe |
| Remusatia hookeriana | Bright indirect light (just back from a sunny window) | Evenly moist in growth, letting the surface dry slightly; keep barely moist during dormancy | Mildly toxic to pets |
| Remusatia vivipara | Bright indirect light (just back from a sunny window) | Keep evenly moist in active growth; let the top 2-3 cm dry between waterings, then keep nearly dry once dormant | Mildly toxic to pets |
| Repandens Yew | Medium indirect light (a couple of metres from a window) | When the top 5 cm of soil is dry, roughly weekly while establishing | Toxic to pets |
| Restrepia antennifera | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water every 2-3 days so the medium never dries out fully | Pet-safe |
| Restrepia elegans | Medium indirect light (a couple of metres from a window) | Keep the medium consistently moist; water every 2-3 days, never allowing it to dry out | Pet-safe |
| Restrepia guttulata | Medium indirect light (a couple of metres from a window) | Keep consistently moist; water every 2-3 days, never letting the medium dry out | Pet-safe |
| Restrepia-mimic Pleurothallis | Medium indirect light (a couple of metres from a window) | Every 5–7 days (potted); near-daily misting if mounted | Pet-safe |
| Restrepo's Chigua | Medium indirect light (a couple of metres from a window) | Every 7–10 days; ensure consistent moisture without waterlogging | Toxic to pets |
| Resurrection fern | Medium indirect light (a couple of metres from a window) | Mist or moisten every 2-4 days; let it dry between | Mildly toxic to pets |
| Resurrection Fern | Medium indirect light (a couple of metres from a window) | Allow to dry slightly between waterings; roughly every 7-10 days, or mist daily when mounted | Pet-safe |
| Resurrection Gesneriad | Medium indirect light (a couple of metres from a window) | Once a week in the growing season; sparingly in winter | Pet-safe |
| Resurrection Lily | Medium indirect light (a couple of metres from a window) | Every 5–7 days during the growing season; withhold almost completely in winter dormancy | Pet-safe |
| Resurrection Spike Moss | Bright indirect light (just back from a sunny window) | Can be kept moist year-round or allowed to dry fully and rehydrated on demand | Pet-safe |
| Reticulate Pseuderanthemum | Bright indirect light (just back from a sunny window) | Every 5–7 days in the growing season; reduce to every 10–14 days in winter | Mildly toxic to pets |
| Reunion Island Begonia | Medium indirect light (a couple of metres from a window) | When the top 2 cm of compost feels dry, approximately every 7 days | Toxic to pets |
| Revolution Hosta | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; deep watering 1-2 times weekly | Toxic to pets |
| Rex begonia | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, every 5-7 days | Toxic to pets |
| Rex Begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Rex Spider Orchid | Bright indirect light (just back from a sunny window) | 2–3 times per week during active growth; weekly or less in cooler rest period | Pet-safe |
| Rhaphidophora Beccarii | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 4-6 days in growth | Toxic to pets |
| Rhaphidophora Cryptantha | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-8 days | Toxic to pets |
| Rhaphidophora Decursiva | Bright indirect light (just back from a sunny window) | Roughly weekly to fortnightly, when top 2-3 inches of soil are dry | Toxic to pets |
| Rhaphidophora Foraminifera | Bright indirect light (just back from a sunny window) | When the top 3 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| Rhaphidophora Hongkongensis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Rhaphidophora korthalsii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days in growth | Toxic to pets |
| Rhaphidophora Lobbii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Rhaphidophora Oblongata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7 days | Toxic to pets |
| Rhaphidophora Pachyphylla | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Rhaphidophora Pertusa | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Rhaphidophora Sylvicola | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Rhaphidophora Tetrasperma (Mini Monstera) | Bright indirect light (just back from a sunny window) | When the top 1-2 inches of soil are dry, roughly weekly in summer | Toxic to pets |
| Rhaphidophora Tetrasperma Variegata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, around every 5-7 days in growth | Toxic to pets |
| Rhapis Multifida | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Rhapis Subtilis | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Rhipsalidopsis gaertneri | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Rhipsalis 'Cashero' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| Rhizomatous Begonia 'Cleopatra' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Rhododendron 'Blue Peter' | Bright indirect light (just back from a sunny window) | Deeply once or twice a week in dry weather; keep consistently moist | Toxic to pets |
| Rhododendron 'Catawbiense Boursault' | Bright indirect light (just back from a sunny window) | Keep the rootball consistently moist; water deeply 1-2 times weekly in dry spells | Toxic to pets |
| Rhododendron 'Cunningham's White' | Bright indirect light (just back from a sunny window) | Keep consistently moist; water deeply 1-2 times weekly during dry spells | Toxic to pets |
| Rhododendron 'English Roseum' | Bright indirect light (just back from a sunny window) | Deeply once a week during the growing season; reduce in winter | Toxic to pets |
| Rhododendron 'Fastuosum Flore Pleno' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil begins to dry, roughly every 7-14 days depending on conditions | Toxic to pets |
| Rhododendron 'Nova Zembla' | Bright indirect light (just back from a sunny window) | Deeply once a week; more frequently during establishment and summer heat | Toxic to pets |
| Rhododendron 'Pink Pearl' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil begins to dry, roughly every 7-10 days during the growing season | Toxic to pets |
| Rhododendron 'PJM' | Bright indirect light (just back from a sunny window) | Keep evenly moist; water deeply 1-2 times weekly in dry spells, more in heat | Toxic to pets |
| Rhododendron 'Roseum Elegans' | Bright indirect light (just back from a sunny window) | Deeply once a week during dry spells; keep consistently moist especially in summer | Toxic to pets |
| Rhoeo Spathacea 'Tricolor' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Toxic to pets |
| Rhombus-Leaf Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring and summer; every 3–4 weeks in winter | Pet-safe |
| Rhyncholaeliocattleya 'Pastoral Innocence' | Bright indirect light (just back from a sunny window) | When the mix nears dry, roughly every 5-7 days in growth; reduced after flowering | Pet-safe |
| Rhynchostylis gigantea | Bright indirect light (just back from a sunny window) | Daily or every other day in warm growth for bare roots; reduce to a few times weekly in the cooler rest | Mildly toxic to pets |
| Rhynchostylis retusa | Bright indirect light (just back from a sunny window) | Daily or every other day in warm growth for bare roots; slightly less in cooler weather | Mildly toxic to pets |
| Ribbed Brain Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in the growing season; reduce to once a month or less in winter | Pet-safe |
| Ribbon Bush | Bright indirect light (just back from a sunny window) | Every 7–10 days in growth; reduce to every 14 days in winter rest | Pet-safe |
| Ribbon Grass | Bright indirect light (just back from a sunny window) | Adaptable; keep moist for best foliage but tolerates dry once established | Mildly toxic to pets |
| Riberry | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 10–14 days for mature plants in mild conditions | Pet-safe |
| Ribes Lepanthes | Medium indirect light (a couple of metres from a window) | Daily misting; substrate must remain moist at all times | Pet-safe |
| Ric Rac Cactus | Bright indirect light (just back from a sunny window) | When the top 2-4 cm of compost is dry, roughly every 7-10 days in summer | Pet-safe |
| Riccia fluitans | Bright indirect light (just back from a sunny window) | Fully submerged or floating; 25-50% water change weekly | Mildly toxic to pets |
| rice cutgrass | Bright indirect light (just back from a sunny window) | Constantly moist to permanently flooded; thrives in standing water at or just above soil level | Pet-safe |
| Richard's Shield Fern | Medium indirect light (a couple of metres from a window) | Every 5–7 days; adjust seasonally | Pet-safe |
| Ridged Cape Primrose | Bright indirect light (just back from a sunny window) | Every 7–14 days in the growing season; very sparingly in winter | Pet-safe |
| Ridley's Hohenbergia | Bright indirect light (just back from a sunny window) | Tank weekly; soil every 10–14 days | Pet-safe |
| Ridley's Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Ridleyandra sp. | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of mix is just drying, roughly every 4-7 days | Mildly toxic to pets |
| Rieger begonia | Bright indirect light (just back from a sunny window) | When the top third of the mix is dry, roughly every 5-10 days | Toxic to pets |
| Rigid Buckler Fern | Bright indirect light (just back from a sunny window) | Every 7–14 days during the growing season; minimal in winter | Mildly toxic to pets |
| Rimu | Bright indirect light (just back from a sunny window) | When the top 5 cm of soil is dry, roughly every 10-14 days | Mildly toxic to pets |
| Ring Fern | Bright indirect light (just back from a sunny window) | Water when the top 3–5 cm of soil is dry — more drought-tolerant than most ferns once established | Mildly toxic to pets |
| Ringed Begonia | Bright indirect light (just back from a sunny window) | When the top 1 inch of soil is dry | Toxic to pets |
| Ritchie's Monadenium | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 10-14 days in summer and every 3-4 weeks in winter | Toxic to pets |
| river clog plant | Bright indirect light (just back from a sunny window) | Every 6–9 days in spring–summer, every 10–14 days in winter | Pet-safe |
| River Nile Rex Begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 5-8 days in summer | Toxic to pets |
| River Water Fern | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; check every 3-5 days | Mildly toxic to pets |
| Rivieri Voodoo Lily | Bright indirect light (just back from a sunny window) | Keep evenly moist during active leaf growth, watering when the top 2-3 cm of soil dries; stop almost entirely once the leaf yellows and dies back. | Toxic to pets |
| Robin Hill serviceberry | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 2–3 weeks once established | Pet-safe |
| Rochford's Holly Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Rock Lily | Bright indirect light (just back from a sunny window) | Every 5–10 days during active growth; reduce significantly in winter rest | Pet-safe |
| Rock Palm | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days in summer; every 2-3 weeks in winter | Pet-safe |
| Rock Polypody | Medium indirect light (a couple of metres from a window) | Low to moderate — allow to dry slightly between waterings | Pet-safe |
| Rock Speedwell | Bright indirect light (just back from a sunny window) | Once every 7–10 days during the growing season; reduce markedly in winter. | Pet-safe |
| Rocky Mountain Woodsia | Medium indirect light (a couple of metres from a window) | Water when the top 2–3 cm of medium feel dry | Pet-safe |
| Rodent Tuber | Medium indirect light (a couple of metres from a window) | Consistently moist during growing season; reduce in dormancy | Toxic to pets |
| Rodgersia Pinnata | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; water deeply 1-2 times weekly, more in heat | Mildly toxic to pets |
| Rodigas' Vriesea | Bright indirect light (just back from a sunny window) | Refill the central cup every 5-7 days; water the potting medium when the top 2 cm is dry, roughly every 10-14 days | Pet-safe |
| Rodriguezia lanceolata | Bright indirect light (just back from a sunny window) | Water as roots approach dryness, roughly every 2-4 days on a mount, less in pots | Mildly toxic to pets |
| Rodriguezia secunda | Bright indirect light (just back from a sunny window) | Every 2-4 days when mounted; every 4-6 days in a small basket, keeping it lightly moist | Mildly toxic to pets |
| Roezl's Dracula | Medium indirect light (a couple of metres from a window) | When the medium surface just barely begins to dry, roughly every 3-5 days | Pet-safe |
| Roezl's Dragon Orchid | Medium indirect light (a couple of metres from a window) | Daily or every other day; medium must never fully dry | Pet-safe |
| Rojo Congo | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Roland-Gosselin's Air Plant | Bright indirect light (just back from a sunny window) | Soak 20–30 minutes once a week; mist 2–3 times weekly | Pet-safe |
| Rolfe's Masdevallia | Medium indirect light (a couple of metres from a window) | Every 1–2 days in summer; every 2–3 days in winter | Pet-safe |
| Roosevelt Fern | Medium indirect light (a couple of metres from a window) | Every 3–5 days in the growing season, less in winter | Pet-safe |
| Rooting Begonia | Bright indirect light (just back from a sunny window) | When the top 2 cm of compost is dry, roughly weekly in growth | Toxic to pets |
| Rose grape | Bright indirect light (just back from a sunny window) | When the top 2-3cm of soil dries in growth; sparingly in winter | Mildly toxic to pets |
| Rose of Jericho (Resurrection Plant) | Bright indirect light (just back from a sunny window) | Keep moist; refresh water frequently | Pet-safe |
| Rose Queen Barrenwort | Medium indirect light (a couple of metres from a window) | Water weekly until established; thereafter drought-tolerant, needing only occasional watering during prolonged dry spells | Mildly toxic to pets |
| Rose Queen Epimedium | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly weekly | Mildly toxic to pets |
| Rose-Painted Calathea | Bright indirect light (just back from a sunny window) | Roughly weekly; when the top 2-3 cm (1 inch) of soil dries | Pet-safe |
| Rose-painted Calathea (Dottie) | Bright indirect light (just back from a sunny window) | Roughly weekly; water when the top 2-3 cm (1 inch) of soil dries | Pet-safe |
| Rosebay Rhododendron | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in summer | Toxic to pets |
| Rosette Petrocosmea | Medium indirect light (a couple of metres from a window) | Every 7–10 days in growth; minimal in winter | Pet-safe |
| Rosy Maidenhair Fern | Bright indirect light (just back from a sunny window) | When the top 1 cm of soil is just barely dry, often every 3-5 days | Mildly toxic to pets |
| Rosy-Leaf Sage | Bright indirect light (just back from a sunny window) | Twice weekly in summer; weekly or less in cooler months | Mildly toxic to pets |
| Rotala 'H'ra' | Bright indirect light (just back from a sunny window) | Submerged permanently; 30-50% aquarium water changes weekly | Mildly toxic to pets |
| Rotala indica | Bright indirect light (just back from a sunny window) | Submerged permanently; 30-50% aquarium water changes weekly | Mildly toxic to pets |
| Rotala macrandra | Bright indirect light (just back from a sunny window) | Submerged permanently; 30-50% aquarium water changes weekly | Mildly toxic to pets |
| Rotala nanjenshan | Bright indirect light (just back from a sunny window) | Submerged permanently; 30-50% aquarium water changes weekly | Mildly toxic to pets |
| Rotala rotundifolia | Bright indirect light (just back from a sunny window) | Submerged permanently; 30-50% aquarium water changes weekly | Mildly toxic to pets |
| Rotala wallichii | Bright indirect light (just back from a sunny window) | Submerged permanently; 30-50% aquarium water changes weekly | Mildly toxic to pets |
| Roth's Air Plant | Bright indirect light (just back from a sunny window) | Mist 2–3 times a week; soak 10–20 minutes weekly if conditions are dry | Pet-safe |
| Rothschild's Bulbophyllum | Medium indirect light (a couple of metres from a window) | Keep evenly moist in growth; water every 3-5 days | Pet-safe |
| Rothschild's Bulbophyllum | Bright indirect light (just back from a sunny window) | Water when the top layer of the medium begins to dry, roughly every 3-5 days | Pet-safe |
| Rothschild's Cirrhopetalum | Medium indirect light (a couple of metres from a window) | Every 5-7 days during the growing season; every 10-14 days in cooler months | Pet-safe |
| Rothschild's Slipper Orchid | Bright indirect light (just back from a sunny window) | When the surface of the mix is approaching dry, roughly every 4-6 days | Mildly toxic to pets |
| Rothschild's Slipper Orchid | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of the mix is dry, approximately every 5-7 days; maintain consistent moisture year-round | Mildly toxic to pets |
| Rough Chervil | Medium indirect light (a couple of metres from a window) | Moderate — rainfall-dependent | Toxic to pets |
| Rough Coelogyne | Bright indirect light (just back from a sunny window) | Every 3–5 days in active growth; reduce slightly in winter | Pet-safe |
| Rough Columnea | Medium indirect light (a couple of metres from a window) | Every 5–7 days in the growing season; every 10–14 days in winter | Pet-safe |
| Rough Pellionia | Medium indirect light (a couple of metres from a window) | Every 5–7 days in the growing season; reduce to every 10–14 days in winter | Pet-safe |
| Rough Spiral Ginger | Bright indirect light (just back from a sunny window) | Regular; keep evenly moist during growing season | Mildly toxic to pets |
| Rough Tree Fern | Bright indirect light (just back from a sunny window) | Keep consistently moist; water every 3-5 days in the growing season, every 7-10 days in cooler months | Pet-safe |
| Rough-Leaf Begonia | Bright indirect light (just back from a sunny window) | Every 6–9 days during growth, every 12–14 days in winter | Toxic to pets |
| Round-Leaf Calathea | Medium indirect light (a couple of metres from a window) | Every 7–10 days in growing season; every 10–14 days in winter | Pet-safe |
| Round-leaf Cape Primrose | Bright indirect light (just back from a sunny window) | Every 7–10 days in the growing season; reduce significantly in winter | Pet-safe |
| Round-Leaf Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days (allow top 2–3 cm to dry) | Pet-safe |
| Round-leafed Stephania | Bright indirect light (just back from a sunny window) | Every 7–10 days in the growing season; cease in winter | Toxic to pets |
| Round-leaved Sage | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth | Pet-safe |
| Round-leaved Wintergreen | Medium indirect light (a couple of metres from a window) | Keep consistently moist; water whenever the top 1–2 cm of soil begins to dry | Mildly toxic to pets |
| Round-lobed Hepatica | Medium indirect light (a couple of metres from a window) | Every 5–7 days during active growth; minimal in summer dormancy | Mildly toxic to pets |
| Rowallane quince | Bright indirect light (just back from a sunny window) | Weekly when establishing; every 2–3 weeks during dry spells once established | Mildly toxic to pets |
| Rowlee's Pleurothallis | Medium indirect light (a couple of metres from a window) | Every 1–2 days in summer; every 2–4 days in cooler months | Pet-safe |
| Roxburgh's Begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost feels dry, roughly every 7-10 days in growth | Toxic to pets |
| Roxburgh's Typhonium | Medium indirect light (a couple of metres from a window) | Moderate during growing season; withhold in dormancy | Toxic to pets |
| Roxburgh's Typhonium | Medium indirect light (a couple of metres from a window) | When the top 2–3 cm of soil is dry during active growth; dry dormancy over winter | Toxic to pets |
| Royal Azalea | Bright indirect light (just back from a sunny window) | Every 5-7 days in the growing season; reduce after leaf drop | Toxic to pets |
| Royal Fern | Medium indirect light (a couple of metres from a window) | Keep soil constantly moist; water whenever the surface starts to dry, often 2-3 times a week in growth | Mildly toxic to pets |
| Royal Purple Lilyturf | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Royal Red Lipstick Plant | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of potting mix is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Rubber plant | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Rubrum Epimedium | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry, roughly every 1-2 weeks | Mildly toxic to pets |
| Ruby Cascade Peperomia | Bright indirect light (just back from a sunny window) | Roughly every 10-14 days; let the top 2-3 cm dry out first | Pet-safe |
| Ruby Cascade Peperomia | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, about every 7-14 days | Pet-safe |
| Ruby Glow Peperomia | Bright indirect light (just back from a sunny window) | Roughly every 7-10 days in spring and summer; much less in winter | Pet-safe |
| Ruby Glow Peperomia | Bright indirect light (just back from a sunny window) | Every 14–21 days in spring/summer; every 4–6 weeks in winter | Pet-safe |
| Ruby Glow Peperomia | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Ruby Necklace | Bright indirect light (just back from a sunny window) | Roughly every 1-3 weeks; let the soil dry out completely between waterings | Mildly toxic to pets |
| Ruellia devosiana | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 4-6 days in summer | Mildly toxic to pets |
| Ruellia makoyana | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 4-6 days in summer | Mildly toxic to pets |
| Rufa Fountain Bamboo | Bright indirect light (just back from a sunny window) | Regularly during the growing season, approximately every 5–7 days; keep soil consistently moist but not waterlogged | Pet-safe |
| Ruffled Echeveria | Bright indirect light (just back from a sunny window) | When the soil dries fully, roughly every 10-14 days in growth | Pet-safe |
| Ruffled Fan Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is just dry, roughly every 4-6 days | Mildly toxic to pets |
| Ruffled Sword Plant | Bright indirect light (just back from a sunny window) | Submerged aquatic — 25-30% weekly water changes are recommended for large aquariums. | Toxic to pets |
| Rumph's Pothos | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Running Tapestry Foamflower | Medium indirect light (a couple of metres from a window) | Every 5–7 days; more during summer drought | Pet-safe |
| Running Tapestry Tiarella | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; water deeply once or twice weekly in dry spells | Mildly toxic to pets |
| Russian Arborvitae | Bright indirect light (just back from a sunny window) | Water weekly until established; drought-tolerant once mature | Mildly toxic to pets |
| Rusty Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days in spring and summer; every 2–3 weeks in autumn and winter | Pet-safe |
| Rusty Turmeric | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth | Mildly toxic to pets |
| Rustyback Fern | Bright indirect light (just back from a sunny window) | Infrequently; allow to dry between waterings | Pet-safe |
| Ryegrass Air Plant | Bright indirect light (just back from a sunny window) | Mist 2–3 times per week or soak for 20 minutes weekly | Pet-safe |
| Sabin's Strobilanthes | Medium indirect light (a couple of metres from a window) | 2–3 times weekly in summer; reduce to once weekly in winter | Mildly toxic to pets |
| Sad Bromeliad | Bright indirect light (just back from a sunny window) | Refresh central cup every 5–7 days; soil every 2–3 weeks | Pet-safe |
| Saddle Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep medium evenly moist; water every 2–3 days | Mildly toxic to pets |
| Saffron Pepper | Bright indirect light (just back from a sunny window) | Every 5–8 days; allow top 2–3 cm of soil to dry | Mildly toxic to pets |
| Sageretia Bonsai | Bright indirect light (just back from a sunny window) | Keep consistently moist; water as the surface starts to dry, often daily | Mildly toxic to pets |
| Sagittaria platyphylla | Medium indirect light (a couple of metres from a window) | Fully submerged; 30-50% aquarium water change weekly | Mildly toxic to pets |
| Sagittaria subulata | Bright indirect light (just back from a sunny window) | Permanently submerged; maintain water level and do 25-30% partial water changes weekly | Mildly toxic to pets |
| Sago palm | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, every 10-14 days | Toxic to pets |
| Sago Palm 'Aurea' | Bright indirect light (just back from a sunny window) | When the top half of the pot is dry, roughly every 10-14 days | Toxic to pets |
| Saintpaulia 'Buckeye Fanfare' | Bright indirect light (just back from a sunny window) | When the top of the mix is just dry, about every 5-7 days | Pet-safe |
| Saintpaulia 'Jolly Ellie' | Bright indirect light (just back from a sunny window) | When the surface of the mix is just dry, roughly every 5-7 days | Pet-safe |
| Saintpaulia 'Mac's Black Pearl' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil feels dry, roughly every 5-7 days | Pet-safe |
| Saintpaulia 'Ness' Dipity' | Bright indirect light (just back from a sunny window) | When the top of the mix is just dry to the touch, about every 5-7 days | Pet-safe |
| Saintpaulia 'Optimara Montana' | Bright indirect light (just back from a sunny window) | When the surface of the mix is just dry, roughly every 5-7 days | Pet-safe |
| Saintpaulia 'Powderpuff' | Bright indirect light (just back from a sunny window) | When the surface of the mix is just dry, roughly every 5-7 days | Pet-safe |
| Saintpaulia 'Rob's Boolaroo' | Bright indirect light (just back from a sunny window) | When the top of the mix feels just dry, typically every 5-7 days | Pet-safe |
| Saintpaulia 'Winter Lace' | Bright indirect light (just back from a sunny window) | When the top of the mix feels just dry, about every 5-7 days | Pet-safe |
| Salak | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water every 2-4 days in warm weather | Mildly toxic to pets |
| Salvinia molesta | Bright indirect light (just back from a sunny window) | Keep floating on warm, calm freshwater at all times; top up evaporation | Mildly toxic to pets |
| Salvinia natans | Bright indirect light (just back from a sunny window) | Keep floating on calm freshwater continuously; replace evaporated water as needed | Mildly toxic to pets |
| San Gabriel Mountains Liveforever | Bright indirect light (just back from a sunny window) | Every 2–3 weeks autumn through spring; none or minimal in summer | Pet-safe |
| Sanchezia speciosa | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-6 days in warm growth | Mildly toxic to pets |
| Sand Rose | Bright indirect light (just back from a sunny window) | When the top 2–3 cm of soil is dry, roughly every 10–14 days in summer and every 3–4 weeks in winter | Mildly toxic to pets |
| Sander's Billbergia | Bright indirect light (just back from a sunny window) | Every 1–2 weeks (cup); soil when dry | Pet-safe |
| Sander's Butterfly Orchid | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of the potting medium is dry, roughly every 5-7 days | Pet-safe |
| Sander's Maxillaria | Bright indirect light (just back from a sunny window) | Every 4–6 days year-round; never allow to fully dry out | Pet-safe |
| Sander's Maxillaria | Bright indirect light (just back from a sunny window) | When the top 2 cm of the mix feels dry, roughly every 5-7 days | Pet-safe |
| Sandstone Cycad | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in active growth; monthly in winter | Toxic to pets |
| Sansevieria Ballyi | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-4 weeks | Toxic to pets |
| Sansevieria Bantel's Sensation | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Canaliculata | Bright indirect light (just back from a sunny window) | When the soil is fully dry, every 2-4 weeks (less in winter) | Toxic to pets |
| Sansevieria Concinna | Bright indirect light (just back from a sunny window) | When the soil is fully dry, every 2-3 weeks (less in winter) | Toxic to pets |
| Sansevieria Ehrenbergii | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Ehrenbergii Samurai | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Eilensis | Bright indirect light (just back from a sunny window) | When the soil is bone dry, roughly every 3-4 weeks | Toxic to pets |
| Sansevieria Fischeri | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Forskaliana | Bright indirect light (just back from a sunny window) | When the soil is fully dry, every 2-4 weeks (less in winter) | Toxic to pets |
| Sansevieria Francisii | Bright indirect light (just back from a sunny window) | When soil is fully dry, roughly every 12-16 days in summer | Toxic to pets |
| Sansevieria Futura Superba | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Gracilis | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-4 weeks | Toxic to pets |
| Sansevieria Hargeisana | Bright indirect light (just back from a sunny window) | When the soil is fully dry, every 2-4 weeks (less in winter) | Toxic to pets |
| Sansevieria Hyacinthoides | Medium indirect light (a couple of metres from a window) | When the soil is fully dry, roughly every 2-3 weeks in summer and monthly in winter | Toxic to pets |
| Sansevieria Intermedia | Medium indirect light (a couple of metres from a window) | When the soil is completely dry, about every 2-3 weeks in summer and monthly in winter | Toxic to pets |
| Sansevieria Kirkii | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Laurentii | Medium indirect light (a couple of metres from a window) | When the soil is fully dry, roughly every 2-3 weeks; less in winter | Toxic to pets |
| Sansevieria Liberica | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Longiflora | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Masoniana Variegata | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in summer and every 4-6 weeks in winter | Toxic to pets |
| Sansevieria Moonshine | Medium indirect light (a couple of metres from a window) | When the soil is fully dry, roughly every 2-3 weeks; less in winter | Toxic to pets |
| Sansevieria Nilotica | Medium indirect light (a couple of metres from a window) | When the soil is fully dry, about every 2-3 weeks in summer and monthly in winter | Toxic to pets |
| Sansevieria Parva | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is fully dry, roughly every 10-14 days in summer | Toxic to pets |
| Sansevieria Patens | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Pearsonii | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Phillipsiae | Bright indirect light (just back from a sunny window) | When the soil is completely dry, about every 3 weeks in summer and every 4-6 weeks in winter | Toxic to pets |
| Sansevieria Pinguicula | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-4 weeks | Toxic to pets |
| Sansevieria Powellii | Medium indirect light (a couple of metres from a window) | When the soil is fully dry, about every 2-3 weeks in summer and every 4-6 weeks in winter | Toxic to pets |
| Sansevieria Raffillii | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Robusta | Medium indirect light (a couple of metres from a window) | When the soil is fully dry, about every 2-3 weeks in summer and monthly in winter | Toxic to pets |
| Sansevieria Senegambica | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Singularis | Bright indirect light (just back from a sunny window) | When the soil is fully dry, about every 2-3 weeks in summer and every 4-6 weeks in winter | Toxic to pets |
| Sansevieria Starfish | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-4 weeks | Toxic to pets |
| Sansevieria Stuckyi | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-4 weeks | Toxic to pets |
| Sansevieria Subspicata | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Trifasciata Black Gold | Medium indirect light (a couple of metres from a window) | When the soil is fully dry, roughly every 2-3 weeks (less in winter) | Toxic to pets |
| Sansevieria Trifasciata Cleopatra | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Trifasciata Craigii | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, every 2-3 weeks | Toxic to pets |
| Sansevieria Trifasciata Gold Flame | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Trifasciata Golden Hahnii | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-4 weeks | Toxic to pets |
| Sansevieria Trifasciata Jade Marginata | Medium indirect light (a couple of metres from a window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Trifasciata Laurentii Superba | Medium indirect light (a couple of metres from a window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Trifasciata Night Owl | Medium indirect light (a couple of metres from a window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Trifasciata Robusta | Medium indirect light (a couple of metres from a window) | When the soil is fully dry, every 2-4 weeks (less in winter) | Toxic to pets |
| Sansevieria Trifasciata Sensation | Medium indirect light (a couple of metres from a window) | When soil is fully dry, roughly every 2-3 weeks (less in winter) | Toxic to pets |
| Sansevieria Trifasciata Silver Hahnii | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-4 weeks | Toxic to pets |
| Sansevieria Trifasciata Superba | Medium indirect light (a couple of metres from a window) | When soil is fully dry, roughly every 2-3 weeks (less in winter) | Toxic to pets |
| Sansevieria Trifasciata Twist | Medium indirect light (a couple of metres from a window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sansevieria Trifasciata Whitney | Medium indirect light (a couple of metres from a window) | When the soil is fully dry, roughly every 2-3 weeks | Toxic to pets |
| Sarapiqui Heliconia | Bright indirect light (just back from a sunny window) | 2–3 times per week in active growth; reduce modestly in cooler periods | Mildly toxic to pets |
| Sarcochilus ceciliae | Bright indirect light (just back from a sunny window) | Water every 2-4 days in growth, allowing the medium to approach dryness between waterings | Pet-safe |
| Sarcochilus falcatus | Bright indirect light (just back from a sunny window) | Water every 2-3 days, keeping the roots moist but well aired | Pet-safe |
| Sarcochilus hartmannii | Bright indirect light (just back from a sunny window) | Water every 2-4 days, keeping the medium damp but never waterlogged | Pet-safe |
| Sardinian Glory of the Snow | Bright indirect light (just back from a sunny window) | Low; natural rainfall sufficient in most temperate climates | Mildly toxic to pets |
| Sardinian Glory of the Snow | Bright indirect light (just back from a sunny window) | Relies on natural rainfall during spring; water only if conditions are exceptionally dry | Toxic to pets |
| Sargent's quince | Bright indirect light (just back from a sunny window) | Weekly when establishing; drought-tolerant once established | Mildly toxic to pets |
| Sarpagandha | Medium indirect light (a couple of metres from a window) | Every 5–7 days in growing season; reduce in cooler months | Toxic to pets |
| Sarracenia-like sun pitcher | Bright indirect light (just back from a sunny window) | Daily; keep media permanently moist | Pet-safe |
| Sasanqua Camellia | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water deeply once or twice weekly in the growing season, more in heat | Pet-safe |
| Sasanqua Camellia 'Yuletide' | Bright indirect light (just back from a sunny window) | About weekly, more in summer heat; water when the top 3-5 cm of soil is dry | Pet-safe |
| Satin Pellionia (Trailing Watermelon Begonia) | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top 1-2 cm feels barely dry, roughly every 4-7 days in growth | Pet-safe |
| Satin Pothos | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in summer | Toxic to pets |
| Satin Pothos | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 7-12 days | Toxic to pets |
| Satomi Dogwood | Bright indirect light (just back from a sunny window) | Weekly during the growing season; every 2 weeks once fully established | Mildly toxic to pets |
| Satsuki Azalea | Bright indirect light (just back from a sunny window) | Keep evenly moist — water when the surface just begins to dry, often daily in heat | Toxic to pets |
| Saucer Magnolia | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 10–14 days once mature in dry spells | Pet-safe |
| Saucer Plant | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is fully dry, roughly every 10-14 days in growth | Mildly toxic to pets |
| Saunders' Billbergia | Medium indirect light (a couple of metres from a window) | Refill the central cup every 7-10 days; water the medium only when the top 3 cm is completely dry, roughly every 14-21 days | Pet-safe |
| Saunders' Vriesea | Bright indirect light (just back from a sunny window) | Keep cup filled; medium dry-down every 2–3 weeks | Pet-safe |
| Saw-wort | Bright indirect light (just back from a sunny window) | Low once established | Mildly toxic to pets |
| Scaly-stem Columnea | Bright indirect light (just back from a sunny window) | Every 5–8 days in summer, every 10–14 days in winter | Pet-safe |
| Scarlet Ball Cactus | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, every 7-10 days in spring and summer; every 3-5 weeks in autumn; very sparingly in winter | Pet-safe |
| Scarlet Begonia | Bright indirect light (just back from a sunny window) | When top 2–3 cm of soil feels dry | Toxic to pets |
| Scarlet Cleistocactus | Bright indirect light (just back from a sunny window) | When the soil is dry, about every 7-10 days in summer; sparing in winter | Pet-safe |
| Scarlet Drymonia | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; every 10–14 days in winter. | Pet-safe |
| Scarlet Ginger Lily | Bright indirect light (just back from a sunny window) | Frequently during the growing season; reduce sharply in winter | Mildly toxic to pets |
| Scarlet Ginger Lily | Bright indirect light (just back from a sunny window) | Keep soil consistently moist during active growth, watering roughly every 4-6 days | Pet-safe |
| Scarlet Leucothoe | Medium indirect light (a couple of metres from a window) | Regular; maintain consistent moisture | Toxic to pets |
| Scarlet Maxillaria | Bright indirect light (just back from a sunny window) | Every 2–3 days in growth, reduce slightly in winter | Pet-safe |
| Scarlet Monkeyflower | Bright indirect light (just back from a sunny window) | Constantly moist to wet — water every 1–2 days in summer | Mildly toxic to pets |
| Scarlet Star Bromeliad | Medium indirect light (a couple of metres from a window) | Fill the central urn weekly; water the potting mix every 2–3 weeks, allowing it to approach dryness between applications | Pet-safe |
| Scarlet Torch Ginger | Bright indirect light (just back from a sunny window) | 2–3 times per week | Mildly toxic to pets |
| Scarletta Leucothoe | Medium indirect light (a couple of metres from a window) | Every 5–7 days in the growing season; do not allow soil to dry | Toxic to pets |
| Scattered-flower Guzmania | Bright indirect light (just back from a sunny window) | Top up central cup weekly; flush monthly | Pet-safe |
| Scharff's Begonia | Bright indirect light (just back from a sunny window) | Every 7–10 days, allowing the top 2–3 cm to dry between waterings | Toxic to pets |
| Schefflera | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Schiede's goldfish plant | Medium indirect light (a couple of metres from a window) | Water when the top 2 cm of soil dries out — approximately every 7–10 days in summer, every 10–14 days in winter. | Pet-safe |
| Schismatoglottis Calyptrata | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days, keeping it evenly moist | Toxic to pets |
| Schismatoglottis Motleyana | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days, keeping it evenly moist | Toxic to pets |
| Schismatoglottis Prietoi | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil begins to dry, roughly every 5-7 days | Toxic to pets |
| Schismatoglottis Wallichii | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days, keeping it evenly moist | Toxic to pets |
| Schizanthus pinnatus 'Angel Wings' | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is just drying, roughly every 3-5 days | Mildly toxic to pets |
| Schlim's Phragmipedium | Bright indirect light (just back from a sunny window) | Keep the medium consistently moist — water when the top 1-2 cm shows any drying | Pet-safe |
| Schlumbergera 'White Christmas' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Schlumbergera × buckleyi | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Schmitz's Cycad | Bright indirect light (just back from a sunny window) | Every 1–2 weeks in growing season; every 3–4 weeks in winter | Toxic to pets |
| Schomburgk's Dancing Ginger | Medium indirect light (a couple of metres from a window) | Abundantly during active growth (spring to autumn); reduce to once weekly when dormant | Mildly toxic to pets |
| Schott's Syngonium | Medium indirect light (a couple of metres from a window) | When the top 2–3 cm of soil is dry, roughly every 7–10 days in warm seasons | Toxic to pets |
| Sciadopitys 'Ossorio Gold' | Bright indirect light (just back from a sunny window) | Keep evenly moist; deep weekly watering while establishing, more during heat or drought | Mildly toxic to pets |
| Sciadopitys 'Wintergreen' | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water deeply weekly in the first 2-3 years, more in heat | Mildly toxic to pets |
| Scindapsus aureus | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Scindapsus Exotica | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 7-12 days | Toxic to pets |
| Scindapsus Officinalis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Toxic to pets |
| Scindapsus Pictus Jade Satin | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Scindapsus Pictus Silver Hero | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 7-14 days | Toxic to pets |
| Scindapsus Silvery Ann | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 7-12 days | Toxic to pets |
| Scindapsus Treubii 'Dark Form' | Bright indirect light (just back from a sunny window) | Every 1-2 weeks; let the top 2-3 inches of soil dry out first | Toxic to pets |
| Scindapsus Treubii Moonlight | Bright indirect light (just back from a sunny window) | Roughly every 7-10 days in growth; less in winter | Toxic to pets |
| Scot's Maidenhair Spleenwort | Medium indirect light (a couple of metres from a window) | Keep the gritty mix lightly and evenly moist; water when the surface starts to dry | Pet-safe |
| Scott's Angraecum | Bright indirect light (just back from a sunny window) | Daily during growing season (approx. 10 months), every other day in December–January | Pet-safe |
| Scottish Heath | Bright indirect light (just back from a sunny window) | Moderate — water during dry spells | Mildly toxic to pets |
| Scurfy Laelia | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; once every 2–3 weeks during summer dry rest | Pet-safe |
| Sea Lettuce | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in winter (active growth); monthly or less in summer (dormancy) | Pet-safe |
| Sea Spleenwort | Medium indirect light (a couple of metres from a window) | When the top 1–2 cm of growing medium feels dry | Pet-safe |
| Sedum burrito | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 1-2 weeks in summer | Pet-safe |
| Sedum-leaf Medinilla | Bright indirect light (just back from a sunny window) | Every 10–14 days (allow soil to nearly dry between waterings) | Mildly toxic to pets |
| Seersucker Plant | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days | Mildly toxic to pets |
| Seigen Japanese Maple | Bright indirect light (just back from a sunny window) | Keep evenly moist; often daily through summer | Mildly toxic to pets |
| Sekete's Restrepia | Bright indirect light (just back from a sunny window) | Every 2-4 days; keep evenly moist | Pet-safe |
| Selenicereus anthonyanus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days in summer | Pet-safe |
| Selenicereus pteranthus | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-14 days in summer | Pet-safe |
| Sellow's Sinningia | Bright indirect light (just back from a sunny window) | Moderate during growth; none during dormancy | Pet-safe |
| Senecio macroglossus | Bright indirect light (just back from a sunny window) | When the soil is nearly dry, roughly every 10-14 days; less in winter | Toxic to pets |
| Senecio macroglossus 'Variegatus' | Bright indirect light (just back from a sunny window) | When the soil is nearly dry, roughly every 10-14 days; less in winter | Toxic to pets |
| Sensation Peace Lily | Medium indirect light (a couple of metres from a window) | Every 7–10 days in spring and summer; every 14 days in autumn and winter | Toxic to pets |
| Sensitive Fern | Medium indirect light (a couple of metres from a window) | Keep continuously moist to wet; check every 2-3 days | Mildly toxic to pets |
| Sequoia 'Adpressa' | Bright indirect light (just back from a sunny window) | When the top few centimetres of soil dry; keep consistently moist, every 5-10 days | Mildly toxic to pets |
| Serissa Bonsai | Bright indirect light (just back from a sunny window) | When the surface just starts to dry, often every 1-3 days in growth | Pet-safe |
| Serpens Wax Plant | Bright indirect light (just back from a sunny window) | Every 7-10 days in growth; far less in winter | Pet-safe |
| Serra Bromeliad | Bright indirect light (just back from a sunny window) | Occasional; drought-tolerant | Mildly toxic to pets |
| Serrated Enkianthus | Bright indirect light (just back from a sunny window) | Regular — even moisture throughout growing season | Toxic to pets |
| Sessile Bellwort | Medium indirect light (a couple of metres from a window) | Moderate; keep soil moist in spring and early summer. Tolerates periodic dryness once established. | Pet-safe |
| Sessile-Leaf Tick Trefoil | Bright indirect light (just back from a sunny window) | Water every 10–14 days during establishment; once established it is drought-tolerant in typical dry woodland and upland conditions | Pet-safe |
| Sessile-leaved Bellwort | Medium indirect light (a couple of metres from a window) | Once or twice per week during the growing season; minimal watering needed once the plant enters summer dormancy. | Mildly toxic to pets |
| Sexy Pink Heliconia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growing season | Mildly toxic to pets |
| Seyrig's Caudex Vine | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in active growth; withhold almost entirely in winter rest | Mildly toxic to pets |
| Shade Mudflower | Medium indirect light (a couple of metres from a window) | Fully submerged — permanent aquatic plant | Pet-safe |
| Shadow Adromischus | Medium indirect light (a couple of metres from a window) | Every 2–3 weeks in the active season; monthly in winter | Pet-safe |
| Shady Sage | Bright indirect light (just back from a sunny window) | Allow soil to dry between waterings | Pet-safe |
| Shaggy Shield Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 4-7 days | Mildly toxic to pets |
| Shaggy Wood Fern | Medium indirect light (a couple of metres from a window) | Regular; keep moist but not waterlogged | Pet-safe |
| Shallon | Medium indirect light (a couple of metres from a window) | Moderate; drought-tolerant once established | Mildly toxic to pets |
| Shampoo Ginger | Bright indirect light (just back from a sunny window) | Every 3–5 days in the growing season; minimal to none during winter dormancy | Pet-safe |
| Shark-Toothed Neoregelia | Bright indirect light (just back from a sunny window) | Refill the central cup every 5-7 days; water the medium lightly when the top 3 cm is dry, roughly every 14 days | Pet-safe |
| Sharp-leaf Columnea | Bright indirect light (just back from a sunny window) | When top 2–3 cm of compost dries out | Pet-safe |
| Sharp-Leaf Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–14 days during active growth; reduce in winter | Pet-safe |
| Sharp-lobed Begonia | Medium indirect light (a couple of metres from a window) | Every 5–7 days in the growing season; less in winter | Toxic to pets |
| Sharp-lobed Hepatica | Medium indirect light (a couple of metres from a window) | Every 5–7 days in spring; reduced to every 10–14 days in summer | Mildly toxic to pets |
| Sharp-Lobed Shield Fern | Medium indirect light (a couple of metres from a window) | Every 7–10 days; reduce in winter | Pet-safe |
| Sharp-tipped Lepanthes | Medium indirect light (a couple of metres from a window) | Daily or every 2 days; keep roots consistently moist | Pet-safe |
| Sheep Laurel | Bright indirect light (just back from a sunny window) | Regular; keep soil consistently moist | Toxic to pets |
| Shingle Monstera | Bright indirect light (just back from a sunny window) | When the top third of the mix dries | Toxic to pets |
| Shingle Plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (1 inch) of mix dries out | Toxic to pets |
| Shingle Plant Hoya | Bright indirect light (just back from a sunny window) | When the mix is almost completely dry, roughly every 10-14 days in summer | Pet-safe |
| Shining Cranesbill | Bright indirect light (just back from a sunny window) | Low; water only in prolonged drought | Pet-safe |
| Shining fetterbush | Bright indirect light (just back from a sunny window) | Consistently moist to wet — do not allow prolonged drought | Toxic to pets |
| Shining Fuchsia | Bright indirect light (just back from a sunny window) | Moderate during growth; minimal in winter | Pet-safe |
| Shining Nidularium | Medium indirect light (a couple of metres from a window) | Refill central cup weekly; substrate every 10–14 days | Pet-safe |
| Shining Sinningia | Bright indirect light (just back from a sunny window) | Every 7–10 days in growth; greatly reduced to near-dry during dormancy | Mildly toxic to pets |
| Shining Sundew | Bright indirect light (just back from a sunny window) | Tray method — keep 1 cm of pure water at all times | Pet-safe |
| Shining Temple Bells | Medium indirect light (a couple of metres from a window) | Every 3–4 days during active growth; none during winter dormancy | Mildly toxic to pets |
| Shining-Leaf Begonia | Bright indirect light (just back from a sunny window) | Every 5–7 days in summer, every 10–14 days in winter | Toxic to pets |
| Shiny Catopsis | Medium indirect light (a couple of metres from a window) | Maintain 1-2 cm of water in the central cup; refresh every 5-7 days | Pet-safe |
| Shohin Japanese Maple | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; often daily in summer heat | Mildly toxic to pets |
| Shooting Star Hoya | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-9 days in growth | Pet-safe |
| Short-fronded Ceratozamia | Medium indirect light (a couple of metres from a window) | Every 2–4 weeks | Toxic to pets |
| Short-Horned Sundew | Bright indirect light (just back from a sunny window) | Constantly moist — tray method year-round | Mildly toxic to pets |
| Short-stalk Columnea | Bright indirect light (just back from a sunny window) | When top 2–3 cm of mix dries | Pet-safe |
| Short-stalk Sophronitis | Bright indirect light (just back from a sunny window) | When the bark surface dries, roughly every 5-7 days in summer; every 10-14 days in winter | Pet-safe |
| Short-stemmed Monanthes | Bright indirect light (just back from a sunny window) | Every 2–4 weeks in growing season; monthly or less in winter | Mildly toxic to pets |
| Short-Stemmed Monanthes | Bright indirect light (just back from a sunny window) | Every 10–14 days in active growth; less in hot summer months | Pet-safe |
| Short-stemmed Restrepia | Medium indirect light (a couple of metres from a window) | Every 2–4 days; medium kept evenly moist | Pet-safe |
| Short-winged Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Showy Autumn Crocus | Bright indirect light (just back from a sunny window) | Relies on natural rainfall when established; no summer irrigation | Toxic to pets |
| Showy Autumn Crocus | Bright indirect light (just back from a sunny window) | Relies on natural rainfall; rarely needs supplementary watering in the garden | Toxic to pets |
| Showy Barkeria | Bright indirect light (just back from a sunny window) | Freely every 5-7 days in active growth; near-dry rest from leaf drop until new growth in spring | Pet-safe |
| Showy Coelogyne | Bright indirect light (just back from a sunny window) | Every 4–6 days in active growth; every 7–10 days in late winter | Pet-safe |
| Showy Corytoplectus | Bright indirect light (just back from a sunny window) | Every 5–7 days in the growing season; reduce to every 10–14 days in winter. | Pet-safe |
| Showy Cranesbill | Bright indirect light (just back from a sunny window) | Weekly during spring and summer; minimal in autumn and winter | Pet-safe |
| Showy Disocactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, approximately every 7-10 days in spring and summer; reduce to every 3-4 weeks in winter | Pet-safe |
| Showy Japanese Lily | Bright indirect light (just back from a sunny window) | When top 2–3 cm of soil is dry | Toxic to pets |
| Showy Laelia | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; once every 2–4 weeks during dry rest | Pet-safe |
| Showy Lipstick Vine | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of potting mix is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Showy Medinilla | Bright indirect light (just back from a sunny window) | Every 7–10 days (allow top 2–3 cm of soil to dry first) | Mildly toxic to pets |
| Showy Sinningia | Bright indirect light (just back from a sunny window) | Keep soil slightly moist during growth; dry off in autumn | Pet-safe |
| Shrimp Plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil feels dry, roughly weekly in summer | Mildly toxic to pets |
| Shrimp Plant | Bright indirect light (just back from a sunny window) | When the top 2–3 cm (1 in) of compost dries out | Pet-safe |
| Shrubby Adenia | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer; near-zero in winter | Toxic to pets |
| Shrubby St John's Wort | Bright indirect light (just back from a sunny window) | Drought-tolerant once established; water through the first season | Toxic to pets |
| Siamese Sago Palm | Bright indirect light (just back from a sunny window) | Every 14–21 days in active growth; minimal in winter | Toxic to pets |
| Siberian Bugloss 'Hadspen Cream' | Medium indirect light (a couple of metres from a window) | Every 5-7 days during the growing season; reduce in winter | Pet-safe |
| Siberian Carpet Cypress | Medium indirect light (a couple of metres from a window) | Moderate — once established, largely drought-tolerant | Mildly toxic to pets |
| Siberian dogwood | Bright indirect light (just back from a sunny window) | Weekly when establishing; tolerates wet conditions long-term | Mildly toxic to pets |
| Siberian Lady Fern | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; water when the top 2 cm begin to dry, roughly weekly in dry weather | Mildly toxic to pets |
| Siberian Mountain Heath | Bright indirect light (just back from a sunny window) | Water regularly to keep soil evenly and consistently moist; never allow to dry out. | Mildly toxic to pets |
| Sichuan Cycad | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer; every 3–4 weeks in winter | Toxic to pets |
| Siebold's Magnolia | Bright indirect light (just back from a sunny window) | Weekly throughout the growing season; reduce in winter | Pet-safe |
| Siebold's Wood Fern | Medium indirect light (a couple of metres from a window) | Moderate; allow slight drying between waterings once established | Pet-safe |
| Sierra Cliff Brake Fern | Bright indirect light (just back from a sunny window) | When the soil is completely dry, roughly every 10-21 days depending on season and environment | Pet-safe |
| Sierra laurel | Medium indirect light (a couple of metres from a window) | Frequently; keep consistently moist | Toxic to pets |
| Sierra Leucothoe | Medium indirect light (a couple of metres from a window) | Regularly; do not allow to dry out between waterings | Toxic to pets |
| Sikkim Banana | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days during active growth | Pet-safe |
| Silky Petrocosmea | Medium indirect light (a couple of metres from a window) | Every 10–14 days in growth; very sparingly in winter | Pet-safe |
| Silveira's Portea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Silver Air Plant | Bright indirect light (just back from a sunny window) | Soak for 20–30 minutes twice a week; mist 2–3 times weekly | Pet-safe |
| Silver Ball Cactus | Bright indirect light (just back from a sunny window) | When the top of the mix is dry, roughly every 7-10 days in summer; none in winter | Pet-safe |
| Silver Brake Fern | Medium indirect light (a couple of metres from a window) | Twice weekly in summer; weekly in winter | Pet-safe |
| Silver Cluster Cactus | Bright indirect light (just back from a sunny window) | When the soil is fully dry, about every 10-14 days in growth; withhold in winter | Pet-safe |
| Silver Crown | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring and summer (growing season); every 3–4 weeks in autumn–winter | Toxic to pets |
| Silver Dollar Maidenhair Fern | Bright indirect light (just back from a sunny window) | Every 3–5 days; never allow the medium to dry out | Pet-safe |
| Silver Dragon Lilyturf | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Pet-safe |
| Silver Goldfish Plant | Bright indirect light (just back from a sunny window) | Water when the top 2 cm of mix feels dry; approximately every 7 days in summer, every 10–14 days in winter | Pet-safe |
| Silver Goosefoot Plant | Medium indirect light (a couple of metres from a window) | Every 7–10 days in growth; every 10–14 days in winter | Toxic to pets |
| Silver Goosefoot Plant | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, roughly every 7-10 days in summer and every 10-14 days in winter | Toxic to pets |
| Silver Jade Plant | Bright indirect light (just back from a sunny window) | When the top 2-4 cm of soil is dry, roughly every 10-14 days in summer | Toxic to pets |
| Silver lace fern | Bright indirect light (just back from a sunny window) | Keep evenly moist — water as soon as the surface feels barely dry, often every 3-5 days | Pet-safe |
| Silver Lady Fern | Bright indirect light (just back from a sunny window) | When the top third of the compost is dry, roughly every 5-7 days in growth | Mildly toxic to pets |
| Silver Light Bergenia | Medium indirect light (a couple of metres from a window) | Every 7–10 days in the growing season; reduce in autumn and winter | Pet-safe |
| Silver Pagoda Dogwood | Bright indirect light (just back from a sunny window) | Regular throughout the growing season; do not allow to dry out | Mildly toxic to pets |
| Silver pothos | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Silver Ribbon Fern | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is just drying, roughly every 4-6 days | Pet-safe |
| Silver Sheen Flame Violet | Bright indirect light (just back from a sunny window) | Every 5–7 days when actively growing; reduce in cooler months | Pet-safe |
| Silver Spurflower | Bright indirect light (just back from a sunny window) | Water when the top 2–3 cm of compost is dry, roughly every 6–10 days in the growing season | Mildly toxic to pets |
| Silver Star Bromeliad | Bright indirect light (just back from a sunny window) | Every 7–10 days | Pet-safe |
| Silver Star Bromeliad | Medium indirect light (a couple of metres from a window) | Water when the top 1-2 cm of compost is dry, roughly every 5-7 days | Pet-safe |
| Silver Tree Fern | Bright indirect light (just back from a sunny window) | Keep consistently moist; water every 3-5 days in summer, reducing to every 7-10 days in cooler months | Pet-safe |
| Silver Vase Bromeliad | Bright indirect light (just back from a sunny window) | Keep the central cup filled with soft water; water potting medium only when it approaches dryness | Pet-safe |
| Silver Vase Plant | Bright indirect light (just back from a sunny window) | Keep the central vase filled; refresh every 7-10 days | Pet-safe |
| Silver Waves Cotyledon | Bright indirect light (just back from a sunny window) | When the soil is almost dry, roughly every 10-14 days in summer | Toxic to pets |
| Silver-edged Primrose | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; reduce in summer dormancy | Mildly toxic to pets |
| Silver-leaf Sinningia | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; water very sparingly or not at all during dormancy | Pet-safe |
| Silver-Veined Taro | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 5-8 days | Toxic to pets |
| Silverleaf Peperomia | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Silvery Stelis | Medium indirect light (a couple of metres from a window) | Every 1–2 days; keep medium consistently moist | Pet-safe |
| Simple-leaf astilbe | Medium indirect light (a couple of metres from a window) | Consistently moist — water 2–3 times per week in dry spells | Pet-safe |
| Simulated Air Plant | Bright indirect light (just back from a sunny window) | Weekly soak of 20–30 minutes | Pet-safe |
| Sinaloa Sage | Bright indirect light (just back from a sunny window) | Weekly in the growing season; allow soil to partially dry between waterings | Mildly toxic to pets |
| Single-flower Lipstick Plant | Bright indirect light (just back from a sunny window) | When top 2 cm of compost dry out | Pet-safe |
| Single-Flowered Bladderwort | Bright indirect light (just back from a sunny window) | Keep substrate permanently moist to wet throughout the growing season; reduce to just damp in cooler winter months | Mildly toxic to pets |
| Single-Leaf Begonia | Medium indirect light (a couple of metres from a window) | Every 7–10 days (keep compost evenly moist but never waterlogged) | Toxic to pets |
| Single-leaf Cape Primrose | Bright indirect light (just back from a sunny window) | every 7–10 days in the growing season, reduce to every 14–21 days in winter | Pet-safe |
| Sinningia 'Duchess of York' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Pet-safe |
| Sinningia 'Empress' | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, keeping the mix evenly moist during active growth | Pet-safe |
| Sinningia 'Li'l Georgie' | Bright indirect light (just back from a sunny window) | When the top 1 cm of soil is dry, about every 4-7 days | Pet-safe |
| Sinningia 'Prudence Risley' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth | Pet-safe |
| Sinningia concinna | Bright indirect light (just back from a sunny window) | Keep evenly lightly moist while in growth, watering when the surface just dries, roughly every 5-8 days | Pet-safe |
| Sinningia eumorpha | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth | Pet-safe |
| Sinningia tubiflora | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth | Pet-safe |
| Sinomiyama Toad Lily | Medium indirect light (a couple of metres from a window) | Keep consistently moist; water when the surface begins to dry, often twice weekly in summer | Mildly toxic to pets |
| Siskiyou Lewisia | Bright indirect light (just back from a sunny window) | Regular in spring/summer; very sparing in winter | Mildly toxic to pets |
| Skimmia japonica Kew White | Medium indirect light (a couple of metres from a window) | Maintain consistently moist soil; water deeply every 5-7 days in dry weather | Mildly toxic to pets |
| Skimmia japonica Rubella | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist; water deeply every 5-7 days in dry spells, less in cool months | Mildly toxic to pets |
| Skimmia Pabella | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; water deeply every 5-7 days in dry spells | Mildly toxic to pets |
| Skimmia Temptation | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist; water deeply every 5-7 days during dry periods | Mildly toxic to pets |
| Skinner's Barkeria | Bright indirect light (just back from a sunny window) | Abundantly every 4-7 days during summer growth; nearly dry rest from late autumn to early spring | Pet-safe |
| Skinner's Cattleya | Bright indirect light (just back from a sunny window) | Every 5–7 days in growth; reduce to every 10–14 days in winter | Pet-safe |
| Skinner's Zamia | Medium indirect light (a couple of metres from a window) | Every 7–10 days in the growing season; every 14–21 days in cooler periods | Toxic to pets |
| Skinners Achimenes | Bright indirect light (just back from a sunny window) | Consistently moist throughout the growing season; dry during winter dormancy | Pet-safe |
| Sky Plant | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes weekly, or mist several times a week; more often in dry, warm rooms | Pet-safe |
| Slanted Air Plant | Medium indirect light (a couple of metres from a window) | Mist 3–4 times per week; soak in cool water for 15–20 minutes every 5–7 days. | Pet-safe |
| Sleeping Beauty Cymbidium | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; reduce to every 10–14 days in autumn–winter | Pet-safe |
| Slender Begonia | Bright indirect light (just back from a sunny window) | When the top 2 cm of compost feel dry | Toxic to pets |
| Slender Brake Fern | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, roughly every 7 days in summer | Pet-safe |
| Slender Frailea | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, roughly every 10-14 days in summer | Pet-safe |
| Slender Ginger Lily | Bright indirect light (just back from a sunny window) | Consistently moist in the growing season; reduce sharply in winter | Pet-safe |
| slender goldfish plant | Bright indirect light (just back from a sunny window) | When the top third of the soil dries out, roughly every 7–10 days in the growing season and every 14 days in winter. | Pet-safe |
| Slender Lady Palm | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Pet-safe |
| slender lipstick plant | Bright indirect light (just back from a sunny window) | Every 7–10 days in active growth; reduce in winter | Pet-safe |
| Slender Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 2–4 days in active growth; every 4–6 days in winter | Pet-safe |
| Slender Sonerila | Medium indirect light (a couple of metres from a window) | Every 5–7 days; maintain consistent moisture without saturation | Pet-safe |
| Slender Waterweed | Medium indirect light (a couple of metres from a window) | Fully submerged aquatic; maintain in aquarium or pond water continuously | Pet-safe |
| Slender-stalked Billbergia | Bright indirect light (just back from a sunny window) | Every 7–14 days | Pet-safe |
| Slim-Flowered Portea | Bright indirect light (just back from a sunny window) | Keep the central cup filled with fresh water; water the soil when the top 3 cm is dry, roughly every 7-10 days | Pet-safe |
| Slipper Flower | Bright indirect light (just back from a sunny window) | Regularly — keep soil evenly moist, especially in bud and bloom | Mildly toxic to pets |
| Slipper Gastrochilus | Bright indirect light (just back from a sunny window) | Mount: daily misting; pot: every 3-4 days during growth, every 7-10 days in winter | Pet-safe |
| Small Cape Primrose | Medium indirect light (a couple of metres from a window) | every 7–10 days in the growing season, every 14–21 days in winter | Pet-safe |
| Small Japanese Silver Grass | Bright indirect light (just back from a sunny window) | Weekly during the first season; every 10–14 days once established, or as needed during drought. | Mildly toxic to pets |
| Small Teasel | Medium indirect light (a couple of metres from a window) | Regular; keep soil reliably moist | Mildly toxic to pets |
| Small-flowered alumroot | Medium indirect light (a couple of metres from a window) | Weekly during the growing season; do not allow to dry out completely | Pet-safe |
| Small-flowered Cape Primrose | Medium indirect light (a couple of metres from a window) | Every 7-10 days in active growth; every 3 weeks in winter | Pet-safe |
| Small-Flowered Cranesbill | Bright indirect light (just back from a sunny window) | Low; water sparingly and only in drought | Pet-safe |
| Small-Fruited Ptychosperma | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Small-leaf Lipstick Plant | Bright indirect light (just back from a sunny window) | When top 2–3 cm of compost dry out | Pet-safe |
| Small-Leaf Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer, every 3–5 weeks in winter | Pet-safe |
| Small-leaved Fuchsia | Bright indirect light (just back from a sunny window) | Every 5-7 days in the growing season; every 14-21 days in winter | Pet-safe |
| Small-Leaved Lipstick Vine | Bright indirect light (just back from a sunny window) | Water when the top 2 cm of mix has dried; roughly every 7–10 days in summer, every 12–14 days in winter | Pet-safe |
| Small's Beardtongue | Bright indirect light (just back from a sunny window) | Every 1–2 weeks; reduce in winter | Pet-safe |
| Smelly Dorstenia | Bright indirect light (just back from a sunny window) | Every 7–10 days in summer; every 3–4 weeks in winter | Mildly toxic to pets |
| Smith's Fairybells | Medium indirect light (a couple of metres from a window) | Weekly during the growing season; reduce in winter dormancy | Mildly toxic to pets |
| Smooth Beardtongue | Bright indirect light (just back from a sunny window) | Weekly to every 10 days; adapts to both drought and periodic wet | Pet-safe |
| Smooth Cane Begonia | Bright indirect light (just back from a sunny window) | When the top 2 cm of compost feel dry | Toxic to pets |
| Smooth Hydrangea 'Incrediball' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, often every 2-4 days in summer | Toxic to pets |
| Smooth Phlox | Bright indirect light (just back from a sunny window) | 2–3 times per week in summer; weekly when established | Pet-safe |
| Smooth Solomon's Seal | Medium indirect light (a couple of metres from a window) | Regular; keep soil evenly moist | Mildly toxic to pets |
| Smooth Spiral Ginger | Bright indirect light (just back from a sunny window) | Regular; evenly moist in growing season | Mildly toxic to pets |
| Smooth-Leaf Begonia | Bright indirect light (just back from a sunny window) | Every 7–10 days; allow top 2 cm to dry between waterings | Toxic to pets |
| Snake Cactus | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in summer; every 3-4 weeks in winter | Pet-safe |
| Snake Orchid | Bright indirect light (just back from a sunny window) | Keep evenly moist, about every 4-6 days in growth, drier in winter | Pet-safe |
| Snake plant | Medium indirect light (a couple of metres from a window) | When the soil is bone dry, every 2-3 weeks | Toxic to pets |
| Snake-Petal Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–14 days in active growth; every 3–4 weeks in winter | Pet-safe |
| Snap Ginger | Medium indirect light (a couple of metres from a window) | Regularly during the growing season; reduce in winter | Mildly toxic to pets |
| Snapdragon Achimenes | Bright indirect light (just back from a sunny window) | Keep evenly moist during the growing season (spring–autumn); withhold entirely during winter dormancy | Pet-safe |
| Snapdragon vine | Bright indirect light (just back from a sunny window) | Water when the top 2–3 cm of soil dries out, roughly every 5–7 days | Pet-safe |
| Snow Trillium | Medium indirect light (a couple of metres from a window) | Moderate during spring growth; dry summer dormancy | Mildly toxic to pets |
| Snow-white Slipper Orchid | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of the mix is dry, approximately every 5-7 days | Mildly toxic to pets |
| snowball bush | Bright indirect light (just back from a sunny window) | Weekly when young; every 1–2 weeks once established | Mildly toxic to pets |
| Snowberry | Bright indirect light (just back from a sunny window) | Regular; keep consistently moist | Mildly toxic to pets |
| Snowberry Creeper | Bright indirect light (just back from a sunny window) | Every 5–7 days; keep soil consistently moist but never waterlogged | Mildly toxic to pets |
| Snowberry Heath | Medium indirect light (a couple of metres from a window) | Regularly; maintain consistently moist but not waterlogged soil | Pet-safe |
| Snowdrop Windflower | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Snowy Wood Rush | Bright indirect light (just back from a sunny window) | Moderate; water every 7–10 days in dry periods, more frequently in summer heat | Pet-safe |
| Snowy Woodrush | Medium indirect light (a couple of metres from a window) | Every 5–7 days in the growing season | Pet-safe |
| Sobralia macrantha | Bright indirect light (just back from a sunny window) | Water generously in active growth, keeping evenly moist; ease off in winter | Pet-safe |
| Sobralia xantholeuca | Bright indirect light (just back from a sunny window) | Water freely in active growth to stay evenly moist; reduce in winter | Pet-safe |
| Social Air Plant | Bright indirect light (just back from a sunny window) | Soak twice weekly or mist daily | Pet-safe |
| Soconusco Zamia | Medium indirect light (a couple of metres from a window) | Every 10–14 days in growing season; every 3–4 weeks in winter | Toxic to pets |
| Socotra Begonia | Bright indirect light (just back from a sunny window) | Every 7–10 days during the growing season (autumn–spring); completely dry during summer dormancy | Toxic to pets |
| Soft Hornwort | Medium indirect light (a couple of metres from a window) | Fully aquatic; maintain floating or loosely anchored in aquarium or pond water | Pet-safe |
| Soft Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep medium consistently moist; water every 2–4 days | Mildly toxic to pets |
| Soft Tree Fern | Medium indirect light (a couple of metres from a window) | Keep the trunk and root zone consistently moist; water into the crown and down the trunk every few days in warm weather | Mildly toxic to pets |
| Soft-leaf Dunce Cap | Bright indirect light (just back from a sunny window) | Approximately every 12–14 days in the growing season; very sparingly in winter dormancy | Pet-safe |
| soft-leaf primulina | Medium indirect light (a couple of metres from a window) | Every 7–12 days in spring–summer; every 14–21 days in winter | Pet-safe |
| Soft-Stemmed Begonia | Bright indirect light (just back from a sunny window) | Every 6–8 days in active growth, reduced in winter | Toxic to pets |
| Soidao Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in growth; reduce to every 3–4 weeks in cooler months | Pet-safe |
| Solitary Fishtail Palm | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in summer | Toxic to pets |
| Somali Aerangis | Bright indirect light (just back from a sunny window) | When roots appear silvery and the medium approaches dryness, roughly every 6-9 days | Pet-safe |
| Sonerila heterostemon | Bright indirect light (just back from a sunny window) | Keep consistently moist in the growing season, watering as the surface starts to dry, about every 4-6 days | Mildly toxic to pets |
| Sonerila margaritacea | Bright indirect light (just back from a sunny window) | Keep evenly moist in growth, watering when the surface just begins to dry, roughly every 4-6 days | Mildly toxic to pets |
| Song of India | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Sonoran Ibervillea | Bright indirect light (just back from a sunny window) | Every 14–21 days in summer; very sparingly in winter | Mildly toxic to pets |
| Sooty Coelogyne | Bright indirect light (just back from a sunny window) | Every 5–7 days in growth; reduce to every 10–14 days in winter | Pet-safe |
| Sophronitis coccinea | Bright indirect light (just back from a sunny window) | Every 2-4 days; keep evenly moist year-round | Pet-safe |
| Sorbet XP Mix Viola | Bright indirect light (just back from a sunny window) | When the top 1–2 cm of soil begins to dry, roughly every 4–6 days | Mildly toxic to pets |
| Southern Japanese Hemlock | Bright indirect light (just back from a sunny window) | Weekly during the growing season; reduced in winter | Pet-safe |
| Southern Lady Fern | Medium indirect light (a couple of metres from a window) | Every 2–4 days in warm weather; soil should never fully dry out | Mildly toxic to pets |
| Southern Maidenhair Fern | Bright indirect light (just back from a sunny window) | Frequent — keep soil consistently moist | Pet-safe |
| Southern Naiad | Medium indirect light (a couple of metres from a window) | Fully submerged; 20-25% water change weekly in aquariums | Mildly toxic to pets |
| Southern Red Trillium | Medium indirect light (a couple of metres from a window) | Regularly moist in spring; reduce by mid-summer | Mildly toxic to pets |
| Southern Shield Fern | Bright indirect light (just back from a sunny window) | Water when the top 3-4 cm of soil dries out, roughly every 5-10 days in summer; reduce in winter | Mildly toxic to pets |
| Spanish Bluebell | Medium indirect light (a couple of metres from a window) | Low to moderate; largely self-sufficient once established | Toxic to pets |
| Spanish Moss | Bright indirect light (just back from a sunny window) | Mist 2-4 times a week, or soak 20-30 minutes weekly in dry conditions | Pet-safe |
| Sparkler Palm Sedge | Medium indirect light (a couple of metres from a window) | Every 5-7 days or when the top 2 cm of soil is dry | Pet-safe |
| Spartan Cliff Stonecrop | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in spring and summer; monthly or less in autumn/winter | Mildly toxic to pets |
| Spathiphyllum 'Domino' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, often every 5-9 days | Toxic to pets |
| Spathiphyllum 'Mauna Loa' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Spathiphyllum 'Sensation' | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, often every 5-9 days | Toxic to pets |
| Spathoglottis kimballiana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix starts to dry, roughly every 3-5 days in warmth | Pet-safe |
| Spathoglottis plicata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix begins to dry, roughly every 3-5 days in warmth | Pet-safe |
| Spatulate Dendrobium | Bright indirect light (just back from a sunny window) | Regularly through warm growth; reduced over a cool, brighter winter rest | Pet-safe |
| Spear Head | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in spring and summer; every 4–5 weeks in autumn and winter | Toxic to pets |
| spear-leaved arrowhead vine | Medium indirect light (a couple of metres from a window) | Every 7–10 days in growing season; every 10–14 days in winter | Toxic to pets |
| Spectacular Dendrobium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth; reduce to once every 2-3 weeks during winter rest | Pet-safe |
| Spegazzini's Gymnocalycium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 10-14 days in summer; every 4-6 weeks in winter | Pet-safe |
| Spider Brake Fern | Medium indirect light (a couple of metres from a window) | When the top 2 cm of mix is dry, about every 5-7 days | Pet-safe |
| Spider Orchid | Bright indirect light (just back from a sunny window) | When the bark surface dries, roughly every 5-7 days in growth | Mildly toxic to pets |
| Spider Orchid (Brassia) | Bright indirect light (just back from a sunny window) | Roughly weekly in growth; let the bark nearly dry between waterings | Mildly toxic to pets |
| Spider plant | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, every 7-10 days | Pet-safe |
| Spike Moss | Medium indirect light (a couple of metres from a window) | Keep evenly moist at all times; typically water every 2-4 days so the soil never dries out | Pet-safe |
| Spiked Cautleya | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry during the growing season, roughly every 7-10 days; reduce significantly in winter | Mildly toxic to pets |
| Spiked Ginger Lily | Bright indirect light (just back from a sunny window) | Regularly during active growth; sparingly in winter | Mildly toxic to pets |
| Spiked Ginger Lily | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 6-8 days in the growing season; reduce to every 2-3 weeks in winter | Mildly toxic to pets |
| Spiked Kohleria | Bright indirect light (just back from a sunny window) | Every 7–10 days in growth; reduce in winter | Pet-safe |
| Spiked Pleurothallis | Medium indirect light (a couple of metres from a window) | Daily in summer; every 2–3 days in winter | Pet-safe |
| spiked sedge | Bright indirect light (just back from a sunny window) | Moderate; water weekly in dry spells once established | Pet-safe |
| Spiny Billbergia | Bright indirect light (just back from a sunny window) | Every 10–14 days | Pet-safe |
| Spiny Lady Fern | Medium indirect light (a couple of metres from a window) | Twice weekly throughout the growing season | Mildly toxic to pets |
| Spiny Palm | Bright indirect light (just back from a sunny window) | Keep the top 2-3 cm consistently moist, roughly every 5-7 days | Pet-safe |
| Spiny Racinaea | Bright indirect light (just back from a sunny window) | Mist 3-5 times per week or soak in water for 20-30 minutes 1-2 times per week | Pet-safe |
| Spiny Tree Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days | Pet-safe |
| Spiral Corkscrew Plant | Bright indirect light (just back from a sunny window) | Keep the substrate permanently moist using the tray method with 1-2 cm of distilled water; never allow to dry out | Pet-safe |
| Spiritus Sancti | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Splash Polka Dot Plant | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; reduce slightly in winter | Pet-safe |
| Splendid Anthurium | Bright indirect light (just back from a sunny window) | Water when the top ~30-40% of the mix is dry, roughly every 5-10 days depending on warmth and light | Toxic to pets |
| Splendid Fuchsia | Bright indirect light (just back from a sunny window) | Regular during growth; reduce in winter | Pet-safe |
| Splendid Zamia | Bright indirect light (just back from a sunny window) | Every 7–14 days in the growing season; every 21 days in winter | Toxic to pets |
| Spotted Aichryson | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in spring and summer; once monthly or less in winter | Mildly toxic to pets |
| Spotted Dead Nettle | Medium indirect light (a couple of metres from a window) | Every 5–7 days in active growth; reduce to every 10–14 days in cool or dormant periods | Pet-safe |
| Spotted Dumb Cane | Medium indirect light (a couple of metres from a window) | Every 7–10 days in summer; every 14 days in winter | Toxic to pets |
| spotted episcia | Bright indirect light (just back from a sunny window) | Water when the soil surface begins to dry slightly — roughly every 5–7 days in warm conditions. | Pet-safe |
| Spotted Gasteria | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Pet-safe |
| Spotted Goldfish Plant | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry | Pet-safe |
| Spotted Gongora | Bright indirect light (just back from a sunny window) | Regularly year-round; allow medium to approach dryness between waterings | Pet-safe |
| Spotted Mandarin | Medium indirect light (a couple of metres from a window) | Regular; keep soil evenly moist | Mildly toxic to pets |
| Spotted Neoregelia | Bright indirect light (just back from a sunny window) | Keep the central cup filled; allow potting medium to dry slightly between waterings | Pet-safe |
| Spotted Nomocharis | Bright indirect light (just back from a sunny window) | Moderate to high; soil should remain consistently moist | Toxic to pets |
| Spotted Sinningia | Bright indirect light (just back from a sunny window) | Every 7–10 days in growth; withhold almost entirely during dormancy | Mildly toxic to pets |
| Spotted Trillium | Medium indirect light (a couple of metres from a window) | Regular during active growth; minimal when dormant | Mildly toxic to pets |
| Spotted Voodoo Lily | Bright indirect light (just back from a sunny window) | Dry during flowering phase; then water when the top 2-3 cm of soil is dry during active leaf growth | Toxic to pets |
| Spotted-foot Stelis | Medium indirect light (a couple of metres from a window) | Every 1–2 days (mounted) or 2–3 times per week (potted) | Pet-safe |
| Spreading Achimenes | Bright indirect light (just back from a sunny window) | Evenly moist during the growing season; completely dry during winter rhizome dormancy | Pet-safe |
| Spreading Begonia | Bright indirect light (just back from a sunny window) | Every 7–10 days in the growing season; reduce in winter | Toxic to pets |
| Spreading Spike Moss | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; check every 2-3 days | Pet-safe |
| Spreading-Flower Guzmania | Bright indirect light (just back from a sunny window) | Top up cup every 5–10 days; water medium every 2 weeks | Pet-safe |
| Sprengel's Air Plant | Bright indirect light (just back from a sunny window) | Soak weekly; mist 2–3 times per week | Pet-safe |
| Sprenger's Tulip | Bright indirect light (just back from a sunny window) | Water during growth; dry in summer | Toxic to pets |
| Spring Beauty | Medium indirect light (a couple of metres from a window) | Moderate during active growth (February–May); none needed during summer dormancy. | Pet-safe |
| Spring Cyclamen | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry during active growth (autumn through spring); withhold during summer dormancy | Toxic to pets |
| Spring Cyclamen | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, roughly every 7-10 days during active growth | Toxic to pets |
| Spring Snowflake | Medium indirect light (a couple of metres from a window) | Regularly during growth (late winter–spring); reduced but not dry in summer | Toxic to pets |
| Spring Starflower | Bright indirect light (just back from a sunny window) | Occasional in autumn and spring; dry during summer dormancy | Toxic to pets |
| Spring Symphony Foamflower | Medium indirect light (a couple of metres from a window) | Approximately every 5–7 days; more frequently in heat or drought | Pet-safe |
| Spring Symphony Tiarella | Medium indirect light (a couple of metres from a window) | Keep consistently moist; deep-water once or twice weekly during dry weather | Mildly toxic to pets |
| Spurred Vanhouttea | Bright indirect light (just back from a sunny window) | Every 5–7 days; allow top 2 cm to dry slightly between waterings | Pet-safe |
| Square Leaf Hoya | Bright indirect light (just back from a sunny window) | When the top third of the mix dries out (roughly weekly in summer, every 2 weeks in winter) | Pet-safe |
| Square-stalked St John's-wort | Bright indirect light (just back from a sunny window) | High — keep consistently moist to wet | Toxic to pets |
| Squirrel Corn | Medium indirect light (a couple of metres from a window) | Every 3-5 days in spring growing season; no irrigation once dormant | Toxic to pets |
| Squirrel's Foot Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Squirrel's Foot Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of the potting medium feels dry, roughly every 7-10 days in summer | Pet-safe |
| Squirrel's Paw Fern | Bright indirect light (just back from a sunny window) | Every 5–8 days in the growing season, every 10–14 days in cooler months | Pet-safe |
| Stachyurus praecox | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil begins to dry, roughly every 5-7 days in summer for younger plants | Mildly toxic to pets |
| Staggerbush | Bright indirect light (just back from a sunny window) | Regularly — keep soil consistently moist, especially in the first 2 years | Toxic to pets |
| Staghorn fern | Bright indirect light (just back from a sunny window) | Soak the mount weekly in summer, every 2-3 weeks in winter | Pet-safe |
| Stained Glass Begonia | Bright indirect light (just back from a sunny window) | Every 7–10 days; allow top 2–3 cm to dry | Toxic to pets |
| Stalked Clivia | Bright indirect light (just back from a sunny window) | Water regularly in spring and summer; reduce significantly in autumn and winter. | Toxic to pets |
| Stalked Podolasia | Medium indirect light (a couple of metres from a window) | Keep substrate permanently saturated or in shallow standing water | Toxic to pets |
| Stamford's Epidendrum | Bright indirect light (just back from a sunny window) | Every 4–6 days in active growth; every 14–21 days in winter rest | Pet-safe |
| Standishii Yew | Bright indirect light (just back from a sunny window) | When the top 5 cm of soil is dry, about weekly while establishing | Toxic to pets |
| Standley's Zamia | Medium indirect light (a couple of metres from a window) | Every 7–14 days in growing season; every 3 weeks in winter | Toxic to pets |
| Stanhopea oculata | Bright indirect light (just back from a sunny window) | When the basket surface begins to dry, often every 2-4 days in growth | Pet-safe |
| Stanhopea tigrina | Bright indirect light (just back from a sunny window) | Every 2-4 days in warm active growth; weekly in cooler, shorter days | Pet-safe |
| Stanhopea wardii | Bright indirect light (just back from a sunny window) | When the basket surface starts to dry, roughly every 2-4 days in active growth | Pet-safe |
| Stapelia flavopurpurea | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in the growing season | Pet-safe |
| Stapelia grandiflora | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in spring and summer | Pet-safe |
| Stapelia hirsuta | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in spring and summer | Pet-safe |
| Stapelia hirsuta var. vetula | Bright indirect light (just back from a sunny window) | When the soil has dried out, roughly every 1-2 weeks in warm growth | Mildly toxic to pets |
| Stapelia leendertziae | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in the growing season | Pet-safe |
| Stapelia variegata | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in spring and summer | Pet-safe |
| Stapelia-Like Monadenium | Bright indirect light (just back from a sunny window) | When the soil is mostly dry, roughly every 10-14 days in summer and every 4 weeks in winter | Toxic to pets |
| Star Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Star Frailea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is completely dry, roughly every 10-14 days in summer | Pet-safe |
| Star Jasmine | Bright indirect light (just back from a sunny window) | Water regularly to establish; once mature, water during dry spells when the top few cm of soil dries | Pet-safe |
| Star of Bethlehem | Bright indirect light (just back from a sunny window) | Relies on natural rainfall; supplement only during extended dry spells in spring | Toxic to pets |
| Star of Bethlehem Orchid | Bright indirect light (just back from a sunny window) | When the bark approaches dryness, roughly every 4-7 days | Pet-safe |
| Star Window Plant | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in summer | Pet-safe |
| Star-flowered Solomon's Seal | Medium indirect light (a couple of metres from a window) | 2 times per week during the growing season; reduce in dormancy | Mildly toxic to pets |
| Stardust Dendrobium | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; reduce to every 10–14 days in winter rest | Pet-safe |
| Starfish Sansevieria | Medium indirect light (a couple of metres from a window) | When the soil is fully dry, roughly every 2-3 weeks (longer in winter) | Toxic to pets |
| Starflower | Medium indirect light (a couple of metres from a window) | Regular; keep soil consistently moist throughout the growing season (spring through autumn). | Pet-safe |
| Starry Solomon's Seal | Medium indirect light (a couple of metres from a window) | Regular, keeping soil evenly moist | Mildly toxic to pets |
| Staurogyne repens | Bright indirect light (just back from a sunny window) | Fully submerged; 25-50% water change weekly | Mildly toxic to pets |
| Stemless Gentian | Bright indirect light (just back from a sunny window) | Regular, keeping soil evenly moist throughout the growing season | Mildly toxic to pets |
| Stenake's Wax Plant | Bright indirect light (just back from a sunny window) | Once or twice a week in summer; reduce in winter | Pet-safe |
| Stenocactus Multicostatus | Bright indirect light (just back from a sunny window) | When the mix is fully dry, about every 1-2 weeks in summer; keep dry in winter | Mildly toxic to pets |
| Stephania Erecta | Bright indirect light (just back from a sunny window) | When the top of the mix is dry, roughly every 7-12 days while in leaf | Mildly toxic to pets |
| Stephania Suberosa | Bright indirect light (just back from a sunny window) | When the top of the mix is dry, roughly every 7-12 days while in leaf | Mildly toxic to pets |
| Stepladder Ginger | Medium indirect light (a couple of metres from a window) | Regular but drought tolerant once established | Mildly toxic to pets |
| Steudner-Leaved Caladium | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry during active growth, roughly every 5–7 days; withhold almost completely during dormancy | Toxic to pets |
| Steudnera colocasiifolia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Stewartia monadelpha | Bright indirect light (just back from a sunny window) | Weekly; keep soil consistently moist but well-drained | Pet-safe |
| Stewartia pseudocamellia | Bright indirect light (just back from a sunny window) | Weekly; keep soil consistently moist but never waterlogged | Pet-safe |
| Sticky Primrose | Bright indirect light (just back from a sunny window) | Regularly in spring and summer; minimal in winter | Toxic to pets |
| Sticky Vriesea | Bright indirect light (just back from a sunny window) | Keep the central tank at least one-quarter full; refresh every 7-10 days; water soil only when top 3 cm is dry | Pet-safe |
| Stiff Begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost feels dry, roughly weekly in growth | Toxic to pets |
| Stiff-leaved Aponogeton | Medium indirect light (a couple of metres from a window) | Permanently submerged; fortnightly 25% water changes as a minimum | Pet-safe |
| Stilt Palm | Bright indirect light (just back from a sunny window) | Keep consistently moist; water every 3-5 days in the growing season | Pet-safe |
| Stinking Trillium | Medium indirect light (a couple of metres from a window) | Consistently moist to damp through the growing season; reduce after summer dormancy | Mildly toxic to pets |
| Stoloniferous Sundew | Bright indirect light (just back from a sunny window) | Tray method during winter growing season; completely dry during summer dormancy | Mildly toxic to pets |
| Stomandra Cape Primrose | Bright indirect light (just back from a sunny window) | Every 7–10 days; keep compost lightly and evenly moist | Pet-safe |
| Stonecrop-leaf Aichryson | Bright indirect light (just back from a sunny window) | Every 10–14 days in the active growing season (autumn to spring); once a month or less in summer | Pet-safe |
| Strachey's Bergenia | Medium indirect light (a couple of metres from a window) | Every 7–10 days during the growing season; reduce in winter | Pet-safe |
| straight-leaved butterwort | Bright indirect light (just back from a sunny window) | Water when top of mix feels barely dry (summer); reduce to very occasional misting (winter) | Pet-safe |
| Strap-Leaf Anthurium | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top 2-3 cm starts to dry | Toxic to pets |
| Strap-leaf Pleurothallis | Medium indirect light (a couple of metres from a window) | Every 2–3 days in active growth; reduce slightly during winter dormancy | Pet-safe |
| Straw Foxglove | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about weekly in dry weather | Toxic to pets |
| Strawberries and Cream Ribbon Grass | Bright indirect light (just back from a sunny window) | Adaptable; moist soil gives best colour but tolerates drought once established | Mildly toxic to pets |
| Strawberry Begonia | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, about every 5-7 days | Pet-safe |
| Strawberry Foxglove | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist; water weekly in dry periods | Toxic to pets |
| Strawberry Foxglove | Bright indirect light (just back from a sunny window) | Once or twice a week in dry periods; consistent moisture prolongs flowering | Toxic to pets |
| Strawberry Shake | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Toxic to pets |
| Streambank Lupine | Bright indirect light (just back from a sunny window) | Moderate; keep soil evenly moist; tolerates periodic wet conditions unlike most lupines | Toxic to pets |
| Streptocarpus 'Bethan' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Streptocarpus 'Black Panther' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Streptocarpus 'Chorus Line' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Streptocarpus 'Falling Stars' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Streptocarpus 'Harlequin Blue' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Pet-safe |
| Streptocarpus 'Polka-Dot Purple' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Streptocarpus 'Purple Haze' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil feels dry, about every 7-10 days | Pet-safe |
| Streptocarpus 'Targa' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, around every 7-10 days | Pet-safe |
| Streptocarpus caulescens | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-12 days | Pet-safe |
| Streptocarpus saxorum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-12 days | Pet-safe |
| Strict Hygrophila | Bright indirect light (just back from a sunny window) | Fully submerged aquatic plant; keep in aquarium water at all times | Pet-safe |
| String Bean Hoya | Bright indirect light (just back from a sunny window) | When the soil is almost fully dry, roughly every 10-14 days | Pet-safe |
| String of bananas | Bright indirect light (just back from a sunny window) | When soil is dry, every 14 days | Toxic to pets |
| String of dolphins | Bright indirect light (just back from a sunny window) | When soil is dry, every 10-14 days | Toxic to pets |
| String of Fishhooks | Bright indirect light (just back from a sunny window) | When soil is fully dry, roughly every 10-14 days in growth | Toxic to pets |
| String of Frogs | Bright indirect light (just back from a sunny window) | When the top 1-2 cm (top inch) of soil is dry, often 1-2x per week in spring/summer | Toxic to pets |
| String of hearts | Bright indirect light (just back from a sunny window) | When soil is dry, every 10-14 days | Pet-safe |
| String of Hearts 'Silver Glory' | Bright indirect light (just back from a sunny window) | When the top half of the soil is fully dry, roughly every 10-14 days in growth | Pet-safe |
| String of needles | Bright indirect light (just back from a sunny window) | When soil is dry, every 10-14 days | Mildly toxic to pets |
| String of Needles | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 10-14 days in summer and every 3-4 weeks in winter | Mildly toxic to pets |
| String of Nickels | Bright indirect light (just back from a sunny window) | when top of mix dries out | Mildly toxic to pets |
| String of Pearls | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in spring and summer; every 4–6 weeks in autumn and winter | Toxic to pets |
| String of Raindrops | Bright indirect light (just back from a sunny window) | When the compost is dry right through, roughly every 10-14 days in summer and every 3-4 weeks in winter | Toxic to pets |
| String of Spades | Bright indirect light (just back from a sunny window) | When the soil is nearly dry, roughly every 10-14 days | Pet-safe |
| String of Teardrops | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in the growing season (autumn–spring); once a month or less in summer dormancy | Toxic to pets |
| String of Tears | Bright indirect light (just back from a sunny window) | Roughly every 7-14 days in spring and summer; about once a month in winter. | Toxic to pets |
| String of Tears | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in growth | Toxic to pets |
| String of Turtles | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in summer and far less in winter | Pet-safe |
| String of Turtles | Bright indirect light (just back from a sunny window) | Every 7–10 days in summer; every 10–14 days in winter | Pet-safe |
| String of Watermelons | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring and summer; once a month or less in winter | Toxic to pets |
| Stripe It Rich Hakone Grass | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Striped Amaryllis | Bright indirect light (just back from a sunny window) | Sparingly when first potted; increase as the flower stalk emerges; water every 7–10 days during active growth; withhold during dormancy | Toxic to pets |
| Striped Begonia (Listada) | Bright indirect light (just back from a sunny window) | When the top 1-2 cm (about half an inch) of mix feels dry | Toxic to pets |
| Striped Goldfish Plant | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry | Pet-safe |
| Striped Squill | Bright indirect light (just back from a sunny window) | Regular during growth; dry when dormant | Mildly toxic to pets |
| Striptease Hosta | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Strobel's Masdevallia | Medium indirect light (a couple of metres from a window) | Every 1–2 days; keep substrate evenly moist throughout the year | Pet-safe |
| Strobel's Masdevallia | Medium indirect light (a couple of metres from a window) | Water freely when the medium begins to approach dryness, roughly every 1-2 days in summer | Pet-safe |
| Strobilanthes auriculata var. dyeriana | Bright indirect light (just back from a sunny window) | When top 2-3 cm of soil is dry, roughly every 4-7 days in growth | Mildly toxic to pets |
| Strobilanthes gossypinus | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Strobilanthes kunthianus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 4-7 days in the growing season | Mildly toxic to pets |
| stromanthe | Bright indirect light (just back from a sunny window) | Every 5–7 days in growing season; every 10–14 days in winter | Pet-safe |
| Stromanthe 'Multicolor' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days in growth | Pet-safe |
| Stromanthe Jacquinii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Stromanthe Magic Star | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days, keeping it lightly moist | Pet-safe |
| Stromanthe Sanguinea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days in growth | Pet-safe |
| Stromanthe Sanguinea Magicstar | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Stromanthe Sanguinea Multicolor | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Stromanthe Triostar | Bright indirect light (just back from a sunny window) | When the top 2-3cm of compost feels dry, roughly weekly in growth | Pet-safe |
| Stromanthe Triostar | Bright indirect light (just back from a sunny window) | Roughly weekly; when the top 25% of the soil is dry | Mildly toxic to pets |
| Stromanthe Triostar (Tricolor) | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days in growth | Pet-safe |
| Strongly-Scented Bulbophyllum | Medium indirect light (a couple of metres from a window) | Every 3–5 days during active growth; every 7–10 days in cooler months | Pet-safe |
| Sublime Slipper Orchid | Medium indirect light (a couple of metres from a window) | When the top of the mix is just barely drying, roughly every 5-7 days | Mildly toxic to pets |
| Sugar and Spice Tiarella | Medium indirect light (a couple of metres from a window) | Keep consistently moist; deep-water once or twice weekly in dry spells | Mildly toxic to pets |
| Sugar Palm | Bright indirect light (just back from a sunny window) | When the top 4-6 cm of soil is dry, roughly every 7-10 days in summer; every 14-21 days in winter | Pet-safe |
| Sukhakul's Slipper Orchid | Medium indirect light (a couple of metres from a window) | When the surface of the mix starts to dry, roughly every 5-7 days | Pet-safe |
| Sulawesi Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Sulphur Clover | Bright indirect light (just back from a sunny window) | Low to moderate; drought-tolerant once established | Pet-safe |
| Sulphur Sawara Cypress | Bright indirect light (just back from a sunny window) | Regular during establishment; moderate once established | Mildly toxic to pets |
| Sulphureum Epimedium | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry, roughly every 1-2 weeks | Mildly toxic to pets |
| Sumatra Banana | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 5-7 days in warm months | Pet-safe |
| Summer Snowflake | Bright indirect light (just back from a sunny window) | Regularly during growth (spring); tolerates seasonal dryness once dormant | Toxic to pets |
| Summer Wave Amethyst Wishbone Flower | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Summit Sage | Bright indirect light (just back from a sunny window) | Every 10–14 days | Pet-safe |
| Sun Pitcher | Bright indirect light (just back from a sunny window) | Keep constantly moist; water from above or stand in a shallow tray of pure water | Mildly toxic to pets |
| Sun Pitcher (Heliamphora) | Bright indirect light (just back from a sunny window) | Keep moist year-round; tray method with no more than ~6 mm (1/4 in) standing water | Mildly toxic to pets |
| Sun Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep pitchers partially filled with distilled water; water substrate when surface begins to dry, roughly every 3-5 days in warm conditions | Pet-safe |
| Sun-Changing Begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil feels dry, roughly weekly | Toxic to pets |
| Sunken Pleurothallis | Medium indirect light (a couple of metres from a window) | Every 1–2 days; never allow to dry out completely | Pet-safe |
| Sunrise Succulent | Bright indirect light (just back from a sunny window) | When the top 2–3 cm of soil is dry, roughly every 10–14 days in summer and every 3–5 weeks in winter | Mildly toxic to pets |
| Superb Stelis | Medium indirect light (a couple of metres from a window) | Every 2–3 days; mounted plants may need daily watering in summer | Pet-safe |
| Superb Wittrockia | Bright indirect light (just back from a sunny window) | Keep the central tank filled; water the root zone when the top 3 cm is dry, roughly every 7-10 days | Pet-safe |
| Superba Astilbe | Bright indirect light (just back from a sunny window) | Keep soil moist; water when the top 2-3 cm dries, roughly every 4-6 days in summer | Mildly toxic to pets |
| Superba Rodgersia | Medium indirect light (a couple of metres from a window) | Keep consistently moist; water deeply 1-2 times weekly, more in heat | Mildly toxic to pets |
| Swamp Azalea | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; in garden settings water every 5-7 days during dry spells | Toxic to pets |
| Swamp doghobble | Medium indirect light (a couple of metres from a window) | Frequently; keep soil consistently moist | Toxic to pets |
| Swamp Loosestrife | Bright indirect light (just back from a sunny window) | Continuously — requires saturated soil or shallow water | Mildly toxic to pets |
| Swan Orchid | Bright indirect light (just back from a sunny window) | Water freely every 3-5 days during active growth; stop almost entirely (water monthly at most) once leaves drop and rest begins | Pet-safe |
| Swedish Ivy | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost feels dry, roughly weekly in summer | Pet-safe |
| Sweet alyssum | Bright indirect light (just back from a sunny window) | Every 5–7 days; drought-tolerant once established | Pet-safe |
| Sweet Azalea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in the growing season | Toxic to pets |
| Sweet Betsy | Medium indirect light (a couple of metres from a window) | Consistently moist through spring and early summer; reduced moisture acceptable during summer dormancy. | Mildly toxic to pets |
| Sweet Mock Orange | Bright indirect light (just back from a sunny window) | When the top 5 cm of soil feels dry, roughly every 7-14 days | Mildly toxic to pets |
| Sweet Trichopilia | Medium indirect light (a couple of metres from a window) | Water when the top 2-3 cm of medium is dry, roughly every 5-8 days in summer; reduce to every 10-14 days in winter | Pet-safe |
| Sweet violet | Medium indirect light (a couple of metres from a window) | Every 5–7 days; keep evenly moist | Pet-safe |
| Sweet White Trillium | Medium indirect light (a couple of metres from a window) | Consistently moist during spring; reduce after dormancy onset | Mildly toxic to pets |
| Sweet White Violet | Medium indirect light (a couple of metres from a window) | Regular; keep soil consistently moist | Pet-safe |
| Sweetbells Leucothoe | Medium indirect light (a couple of metres from a window) | Regularly throughout the growing season; do not allow to dry out | Toxic to pets |
| Sweetheart plant | Bright indirect light (just back from a sunny window) | When soil is dry, every 14-21 days | Pet-safe |
| Swertia-leaf Scaphosepalum | Medium indirect light (a couple of metres from a window) | When the medium surface is barely beginning to dry, roughly every 3-5 days | Pet-safe |
| Swingle's primulina | Medium indirect light (a couple of metres from a window) | Every 8–12 days in spring–summer; every 16–21 days in winter | Pet-safe |
| Swiss cheese vine | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 5-7 days | Toxic to pets |
| Swollen-stem Tylecodon | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in the growing season (autumn–spring); once monthly or none in summer | Toxic to pets |
| Sword Brake Fern | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of mix is dry, about every 4-6 days | Pet-safe |
| Sword-Leaved Air Plant | Bright indirect light (just back from a sunny window) | Mist 2-3 times per week or soak 20 minutes weekly | Pet-safe |
| Syngonium 'Strawberry Ice' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Syngonium 'Three Kings' | Bright indirect light (just back from a sunny window) | When the top 1-2 inches of soil are dry, roughly weekly in summer | Toxic to pets |
| Syngonium 'White Butterfly' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Syngonium Albo Variegatum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 6-8 days in growth | Toxic to pets |
| Syngonium macrophyllum | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 6-9 days in growth | Toxic to pets |
| Syngonium Neon Robusta | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Syngonium Neon Robusta (Pink Arrowhead) | Bright indirect light (just back from a sunny window) | Every 7-10 days in growth; less in winter | Toxic to pets |
| Syngonium Pink Splash | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Syngonium podophyllum 'Milk Confetti' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Syngonium rayii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days in growth | Toxic to pets |
| Table Fern | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is just barely dry, roughly every 4-7 days | Pet-safe |
| Taccarum weddellianum | Bright indirect light (just back from a sunny window) | Water regularly in active growth; keep the tuber dry through dormancy | Toxic to pets |
| Tail-leaf Tolumnia | Bright indirect light (just back from a sunny window) | When roots appear silvery and the leaf base is dry, roughly every 5-7 days | Pet-safe |
| Tailed Aechmea | Bright indirect light (just back from a sunny window) | Every 2–3 weeks (soil); refresh central tank monthly | Pet-safe |
| Tailed Brake Fern | Medium indirect light (a couple of metres from a window) | Every 3–5 days in the growing season; every 7 days in winter | Pet-safe |
| Tailed Masdevallia | Bright indirect light (just back from a sunny window) | Daily in warm weather; every 3–5 days in cooler months | Pet-safe |
| Taita African violet | Bright indirect light (just back from a sunny window) | Every 7–10 days | Pet-safe |
| Taiwan Begonia | Medium indirect light (a couple of metres from a window) | When the top 2–3 cm of compost feel dry | Toxic to pets |
| Taiwan Felt Fern | Bright indirect light (just back from a sunny window) | Every 7-10 days; allow surface to dry between waterings | Pet-safe |
| Taiwan Podocarpus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Taiwan Shell Ginger | Bright indirect light (just back from a sunny window) | Regularly; keep soil evenly moist during the growing season | Mildly toxic to pets |
| Tall Bluebells | Bright indirect light (just back from a sunny window) | Water deeply 2–3 times weekly; never allow to dry out in growing season | Pet-safe |
| Tall Moor Grass | Bright indirect light (just back from a sunny window) | Regular; keep soil evenly moist | Pet-safe |
| tall purple moor grass | Bright indirect light (just back from a sunny window) | Regularly during establishment; once established, water only in prolonged dry spells | Pet-safe |
| Tall Sinningia | Bright indirect light (just back from a sunny window) | When top 2–3 cm of compost feels dry during growth | Pet-safe |
| Tamis Chirita | Bright indirect light (just back from a sunny window) | Every 7–10 days | Pet-safe |
| Tampoi | Bright indirect light (just back from a sunny window) | 2–3 times per week; maintain consistently moist soil | Mildly toxic to pets |
| Tangerine Beauty Crossvine | Bright indirect light (just back from a sunny window) | Weekly until established; drought-tolerant thereafter | Mildly toxic to pets |
| Tar-scented Vriesea | Bright indirect light (just back from a sunny window) | Refill central cup weekly; allow potting medium to remain almost completely dry | Pet-safe |
| Tasmanian Holly Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, about every 5-7 days | Pet-safe |
| Tasmanian Pernettya | Medium indirect light (a couple of metres from a window) | Regular; keep soil evenly moist | Mildly toxic to pets |
| Tasmanian Tree Fern | Bright indirect light (just back from a sunny window) | Keep consistently moist — water when the top 3-4 cm of soil or fibrous trunk surface feels dry, typically every 3-7 days | Pet-safe |
| Tasteless Stonecrop | Bright indirect light (just back from a sunny window) | Every 14-21 days in spring and summer; monthly or less in winter | Pet-safe |
| Tatei Sun Pitcher | Bright indirect light (just back from a sunny window) | Keep pitchers partially filled with distilled water; moisten the substrate every 3-5 days, ensuring it remains consistently damp without waterlogging | Pet-safe |
| Tatting Fern | Medium indirect light (a couple of metres from a window) | 2–3 times per week in growing season; reduce in winter | Pet-safe |
| Tavaresia barklyi | Bright indirect light (just back from a sunny window) | When soil is fully dry, about every 10-14 days in warm growth; keep nearly dry in winter | Mildly toxic to pets |
| Tavaresia grandiflora | Bright indirect light (just back from a sunny window) | When soil is fully dry, about every 10-14 days in warm growth; keep nearly dry in winter | Mildly toxic to pets |
| Tayabas Begonia | Medium indirect light (a couple of metres from a window) | Every 6–9 days, allowing only the top 1–2 cm to dry between waterings | Toxic to pets |
| Teague's Porroglossum | Medium indirect light (a couple of metres from a window) | Every 2–4 days; allow medium surface to dry slightly between waterings | Pet-safe |
| Teddy Bear Vine | Bright indirect light (just back from a sunny window) | When the top 2–3 cm of soil feel dry, roughly every 7–10 days year-round | Pet-safe |
| Teddy Bear Vine | Bright indirect light (just back from a sunny window) | When the top half of the soil has dried out, roughly every 10-14 days | Mildly toxic to pets |
| Tellmann's honeysuckle | Medium indirect light (a couple of metres from a window) | Weekly during dry spells; especially important in summer while in active growth | Mildly toxic to pets |
| Temple Bells | Medium indirect light (a couple of metres from a window) | Every 3–4 days during active growth; cease entirely during winter dormancy | Mildly toxic to pets |
| Tenby Daffodil | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry during active growth, roughly every 7-10 days | Toxic to pets |
| Tentacle Lepanthes | Medium indirect light (a couple of metres from a window) | Daily misting or continuous humidity; never allow roots to fully dry | Pet-safe |
| Tetrastigma voinierianum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Mildly toxic to pets |
| Texas Nipple Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-14 days in summer and once every 4-6 weeks in winter | Pet-safe |
| Teysmann's Medinilla | Bright indirect light (just back from a sunny window) | Every 5–7 days in growth; every 10–14 days in the winter rest period | Mildly toxic to pets |
| Thai Mountain Palm | Bright indirect light (just back from a sunny window) | Every 5–7 days in summer, fortnightly in cooler months | Pet-safe |
| Thalictrum 'Elin' | Bright indirect light (just back from a sunny window) | Keep soil reliably moist; water deeply in dry spells | Mildly toxic to pets |
| Thalictrum aquilegiifolium | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water in dry spells | Mildly toxic to pets |
| Thalictrum delavayi 'Hewitt's Double' | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water regularly in dry weather, do not let it dry out | Mildly toxic to pets |
| Thalictrum rochebrunianum | Bright indirect light (just back from a sunny window) | About twice a week, keeping soil evenly moist | Toxic to pets |
| Thanksgiving Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| The Rocket Ligularia | Medium indirect light (a couple of metres from a window) | Keep soil constantly moist; water deeply 2-3 times weekly in summer, daily in heat or dry spells | Mildly toxic to pets |
| Thelma's Begonia | Medium indirect light (a couple of metres from a window) | Every 7–10 days, allowing the top 2 cm of compost to partially dry | Toxic to pets |
| Thick Gongora | Bright indirect light (just back from a sunny window) | Every 4–6 days in active growth; every 10–14 days in winter rest | Pet-safe |
| Thick-leaf Goldfish Plant | Bright indirect light (just back from a sunny window) | When the top 2–3 cm of soil is dry | Pet-safe |
| Thick-leaf Primulina | Bright indirect light (just back from a sunny window) | Every 14–21 days in the growing season; every 4–5 weeks in winter | Mildly toxic to pets |
| Thick-stemmed Aichryson | Bright indirect light (just back from a sunny window) | Every 10–15 days during active growth (spring–summer); very sparingly in winter | Mildly toxic to pets |
| Thieme's Begonia | Bright indirect light (just back from a sunny window) | Every 7–10 days (allow the top 2–3 cm of compost to dry between waterings) | Toxic to pets |
| Thin-Leaved Air Plant | Bright indirect light (just back from a sunny window) | 2–3 times per week | Pet-safe |
| Thin-Leaved Sunflower | Medium indirect light (a couple of metres from a window) | Every 1–2 weeks; keep moderately moist | Pet-safe |
| Thin-Spiked Air Plant | Bright indirect light (just back from a sunny window) | 2–3 times per week (misting) or weekly soak | Pet-safe |
| Thomsonii Wax Plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (about the top 60-80%) of the mix is dry, roughly weekly in spring/summer and less in winter | Pet-safe |
| Thorny Chin Cactus | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in summer; every 5–8 weeks in winter | Pet-safe |
| Thorny Specklinia | Medium indirect light (a couple of metres from a window) | Every 1–2 days; do not allow complete drying | Pet-safe |
| Thorny Zamia | Bright indirect light (just back from a sunny window) | Every 2–4 weeks | Toxic to pets |
| Thread-Leaf Air Plant | Bright indirect light (just back from a sunny window) | Mist 3–4 times a week or soak once a week | Pet-safe |
| Thread-Leaved Air Plant | Bright indirect light (just back from a sunny window) | Mist 2–3 times per week, or soak for 20–30 minutes once a week | Pet-safe |
| Three-awn Trisetella | Medium indirect light (a couple of metres from a window) | When the medium surface just begins to dry, roughly every 3-5 days | Pet-safe |
| Three-Colored Lycaste | Bright indirect light (just back from a sunny window) | Every 5–7 days in growth; reduce to every 10–14 days in winter | Pet-safe |
| Three-Coloured Bladderwort | Bright indirect light (just back from a sunny window) | Keep substrate consistently moist; water tray method year-round | Mildly toxic to pets |
| Three-leaf Licuala | Medium indirect light (a couple of metres from a window) | Every 5–7 days; maintain consistent soil moisture | Pet-safe |
| Three-Nerved Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days (allow soil to dry between waterings) | Pet-safe |
| Three-Part Begonia | Bright indirect light (just back from a sunny window) | Every 7–10 days (water when the top 2 cm of compost feels dry) | Toxic to pets |
| Threeleaf Foamflower | Medium indirect light (a couple of metres from a window) | Approximately once or twice per week during the growing season; reduce in winter. | Mildly toxic to pets |
| Thunberg's astilbe | Medium indirect light (a couple of metres from a window) | Regular — every 2–3 days in warm weather; reduce in cool, overcast periods | Pet-safe |
| Thunbergia grandiflora | Bright indirect light (just back from a sunny window) | Keep the soil consistently moist in growth; reduce in winter | Mildly toxic to pets |
| Thyme-leaved Fuchsia | Medium indirect light (a couple of metres from a window) | Regular — keep soil evenly moist | Pet-safe |
| Thyrse Ginger Lily | Medium indirect light (a couple of metres from a window) | Consistently moist through growing season; reduced in dormancy | Mildly toxic to pets |
| Thyrse Ginger Lily | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil feels dry, roughly every 5-8 days in summer; every 12-14 days in winter | Mildly toxic to pets |
| Tiger Aloe | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in active growth, sparingly in summer dormancy and winter | Toxic to pets |
| Tiger Crow Orchid | Bright indirect light (just back from a sunny window) | When the bark mix is nearly dry, roughly every 5-7 days in growth | Pet-safe |
| Tiger Fern | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, often every 4-7 days | Pet-safe |
| Tiger Jaws | Bright indirect light (just back from a sunny window) | Every 2-3 weeks in spring-autumn; roughly monthly or less in winter | Mildly toxic to pets |
| Tiger Kitten Begonia | Medium indirect light (a couple of metres from a window) | Every 7–14 days; allow top 2 cm to dry | Toxic to pets |
| Tiger Moth Orchid | Bright indirect light (just back from a sunny window) | When the bark is nearly dry, typically every 6-9 days | Pet-safe |
| Tiger Orchid | Bright indirect light (just back from a sunny window) | Abundant in growth (every 1-3 days); much drier in rest | Mildly toxic to pets |
| Tiger Paws Begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Tiger Trichocentrum | Bright indirect light (just back from a sunny window) | When the bark approaches dryness, every 7-10 days; reduce slightly in cooler months | Pet-safe |
| Tillandsia aeranthos | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes weekly | Pet-safe |
| Tillandsia Andreana | Bright indirect light (just back from a sunny window) | Mist 2-3 times a week and soak 20-30 minutes every 1-2 weeks, more often in dry heat | Pet-safe |
| Tillandsia Baileyi | Bright indirect light (just back from a sunny window) | Soak for 20-30 minutes weekly, with extra misting in dry or hot spells | Pet-safe |
| Tillandsia bergeri | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes weekly; mist between soaks in dry air | Pet-safe |
| Tillandsia brachycaulos | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes weekly | Pet-safe |
| Tillandsia bulbosa | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes weekly, plus misting between soaks in dry air | Pet-safe |
| Tillandsia butzii | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes weekly; mist between soaks if dry | Pet-safe |
| Tillandsia Capitata | Bright indirect light (just back from a sunny window) | Soak fully every 7-10 days, plus mist 2-3 times weekly in dry or warm conditions | Pet-safe |
| Tillandsia caput-medusae | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes every 1-2 weeks; mist between soaks | Pet-safe |
| Tillandsia Concolor | Bright indirect light (just back from a sunny window) | Soak fully every 7-10 days, plus mist 1-2 times weekly in dry air | Pet-safe |
| Tillandsia fasciculata | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes weekly | Pet-safe |
| Tillandsia fuchsii | Bright indirect light (just back from a sunny window) | Mist 2-3 times weekly or soak 20-30 minutes weekly | Pet-safe |
| Tillandsia funckiana | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes weekly, or mist 2-3 times a week | Pet-safe |
| Tillandsia Gardneri | Bright indirect light (just back from a sunny window) | Mist thoroughly 3-4 times a week; brief 10-15 minute soaks every 1-2 weeks | Pet-safe |
| Tillandsia ionantha 'Druid' | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes weekly, with misting between soaks in dry rooms | Pet-safe |
| Tillandsia ionantha 'Fuego' | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes weekly, plus misting between soaks in dry rooms | Pet-safe |
| Tillandsia juncea | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes weekly | Pet-safe |
| Tillandsia leiboldiana | Bright indirect light (just back from a sunny window) | Keep the central cup filled; soak or rinse weekly | Pet-safe |
| Tillandsia magnusiana | Bright indirect light (just back from a sunny window) | Mist 2-3 times a week, or briefly dunk every 1-2 weeks | Pet-safe |
| Tillandsia paleacea | Bright indirect light (just back from a sunny window) | Mist 2-3 times a week, or soak briefly every 1-2 weeks | Pet-safe |
| Tillandsia polystachia | Bright indirect light (just back from a sunny window) | Soak or mist 2-3 times weekly, more in heat | Pet-safe |
| Tillandsia Pruinosa | Bright indirect light (just back from a sunny window) | Mist or dunk 2-4 times weekly; soak briefly every 1-2 weeks | Pet-safe |
| Tillandsia pseudobaileyi | Bright indirect light (just back from a sunny window) | Soak or dunk every 7-10 days | Pet-safe |
| Tillandsia recurvifolia | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes weekly; mist between soaks if air is dry | Pet-safe |
| Tillandsia schiedeana | Bright indirect light (just back from a sunny window) | Soak or dunk every 7-10 days, or mist 2-3 times weekly | Pet-safe |
| Tillandsia Seleriana | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes every 1-2 weeks; mist only lightly between soaks | Pet-safe |
| Tillandsia Streptophylla | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes every 1-2 weeks; mist sparingly between soaks | Pet-safe |
| Tillandsia stricta | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes weekly, plus misting between soaks in dry rooms | Pet-safe |
| Tillandsia tectorum | Bright indirect light (just back from a sunny window) | Mist lightly every 10-14 days; soak only rarely | Pet-safe |
| Tillandsia tricolor | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes once a week, or mist 2-3 times weekly | Pet-safe |
| Tillandsia Velutina | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes weekly, misting more often in warm, dry conditions | Pet-safe |
| Tillandsia xerographica | Bright indirect light (just back from a sunny window) | Soak for 20-30 minutes every 10-14 days, more often in dry heat | Pet-safe |
| Tina butterwort | Bright indirect light (just back from a sunny window) | Keep media lightly damp during carnivorous phase; allow to nearly dry during succulent winter phase | Pet-safe |
| Tiny Stelis | Medium indirect light (a couple of metres from a window) | Every 1–2 days; medium should not dry out completely | Pet-safe |
| Tiny-calyx Columnea | Bright indirect light (just back from a sunny window) | Every 5–7 days in summer; every 10–14 days in winter | Pet-safe |
| Tiramisu Heuchera | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water when the top 2-3 cm is dry, roughly every 5-7 days in summer | Pet-safe |
| Titan Arum | Bright indirect light (just back from a sunny window) | Keep evenly moist while in leaf; reduce sharply during dormancy | Toxic to pets |
| Titanotrichum oldhamii | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 4-7 days in growth | Mildly toxic to pets |
| Toadshade Trillium | Medium indirect light (a couple of metres from a window) | Consistently moist during spring and summer growing season; allow soil to dry slightly after summer dormancy. | Mildly toxic to pets |
| Tobacco-leaf Primulina | Bright indirect light (just back from a sunny window) | Every 7–14 days in the growing season; every 3–4 weeks in winter | Mildly toxic to pets |
| Toilet Pitcher Plant | Bright indirect light (just back from a sunny window) | Regularly — keep medium evenly moist | Mildly toxic to pets |
| Tojen Toad Lily | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water when the surface begins to dry, roughly once or twice a week in summer | Mildly toxic to pets |
| Tolumnia variegata | Bright indirect light (just back from a sunny window) | Daily to every other day when mounted; allow to dry fully between | Pet-safe |
| Tom Thumb Cactus | Bright indirect light (just back from a sunny window) | Every 10-14 days in spring/summer; every 3-4 weeks in autumn; once or twice in winter | Mildly toxic to pets |
| Tommies Crocus | Bright indirect light (just back from a sunny window) | No supplemental watering needed once established; relies on winter and spring rainfall | Mildly toxic to pets |
| Tongue Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of medium is dry, roughly every 7-10 days | Pet-safe |
| Tongue Leaf Plant | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in autumn and spring; very sparingly in summer and winter | Mildly toxic to pets |
| Tongue Water Trumpet | Medium indirect light (a couple of metres from a window) | Permanently submerged or saturated substrate; never allow to dry | Toxic to pets |
| Toothed Davallia | Bright indirect light (just back from a sunny window) | Every 4–6 days in summer, every 8–12 days in winter | Pet-safe |
| Toothed Fuchsia | Bright indirect light (just back from a sunny window) | Regular — keep evenly moist | Pet-safe |
| Toothwort | Medium indirect light (a couple of metres from a window) | 2–3 times per week during the brief spring growth period; essentially none during summer dormancy | Pet-safe |
| Topsy Turvy Echeveria | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in summer | Pet-safe |
| Torch Ginger | Bright indirect light (just back from a sunny window) | 2–3 times per week; more during dry spells | Mildly toxic to pets |
| Torenia fournieri | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, often every 2-4 days in summer | Mildly toxic to pets |
| Torenia fournieri 'Catalina Midnight Blue' | Bright indirect light (just back from a sunny window) | Keep consistently moist; water every 2-4 days, more in heat | Mildly toxic to pets |
| Torenia fournieri 'Summer Wave Large Violet' | Bright indirect light (just back from a sunny window) | Keep evenly moist; water every 2-4 days, daily for baskets in heat | Mildly toxic to pets |
| Tormentil | Bright indirect light (just back from a sunny window) | Moderate; keep soil lightly moist but not wet | Pet-safe |
| Trachelospermum asiaticum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days while establishing | Pet-safe |
| Trachycarpus Latisectus | Bright indirect light (just back from a sunny window) | Regularly through the growing season; keep evenly moist but never soggy | Pet-safe |
| Tradescantia 'Bubblegum' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Tradescantia 'Lilac' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Tradescantia 'Lilac' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-9 days in growth | Toxic to pets |
| Tradescantia 'Nanouk' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm is dry, roughly every 7-10 days in summer and less in winter | Toxic to pets |
| Tradescantia blossfeldiana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days in growth | Toxic to pets |
| Tradescantia fluminensis 'Tricolor' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Tradescantia fluminensis 'Variegata' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Tradescantia mundula | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Mildly toxic to pets |
| Tradescantia Navicularis | Bright indirect light (just back from a sunny window) | When the top half of the pot is dry, roughly every 10-14 days | Toxic to pets |
| Tradescantia Sillamontana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-12 days | Toxic to pets |
| Tradescantia Zebrina 'Quadricolor' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Trailing Abutilon | Bright indirect light (just back from a sunny window) | Freely in growth (spring–autumn); sparingly in winter | Mildly toxic to pets |
| Trailing Achimenes | Bright indirect light (just back from a sunny window) | Consistently moist but never waterlogged during the growing season; completely dry in winter dormancy | Pet-safe |
| Trailing African Violet | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Trailing African Violet 'Rob's Vanilla Trail' | Bright indirect light (just back from a sunny window) | When the soil surface is just dry, about every 5-7 days | Pet-safe |
| Trailing Cape Primrose | Bright indirect light (just back from a sunny window) | every 7–10 days in active growth, every 14–21 days in winter | Pet-safe |
| trailing clog plant | Bright indirect light (just back from a sunny window) | Every 7–10 days in spring–summer, every 12–14 days in autumn–winter | Pet-safe |
| Trailing Elephant Bush | Bright indirect light (just back from a sunny window) | Every 7–10 days in summer; every 2–3 weeks in winter | Pet-safe |
| Trailing Fuchsia | Bright indirect light (just back from a sunny window) | Every 7-10 days in summer; very sparingly in winter | Pet-safe |
| Trailing Jade Peperomia | Bright indirect light (just back from a sunny window) | Every 7-14 days in spring/summer; less in winter | Pet-safe |
| Trailing Maidenhair Fern | Bright indirect light (just back from a sunny window) | When the surface just begins to dry, roughly every 3-5 days | Pet-safe |
| Trailing Rock Jasmine | Bright indirect light (just back from a sunny window) | Moderate; allow top 2 cm to dry between waterings | Mildly toxic to pets |
| Transparent Tall Moor Grass | Bright indirect light (just back from a sunny window) | Weekly during establishment; less once settled | Pet-safe |
| Transparent-Leaf Peperomia | Bright indirect light (just back from a sunny window) | Every 2–3 weeks (allow compost to dry between waterings) | Pet-safe |
| Transylvanian Hepatica | Medium indirect light (a couple of metres from a window) | Every 5–7 days in spring and autumn; every 10–14 days in summer | Mildly toxic to pets |
| Transylvanian Sage | Bright indirect light (just back from a sunny window) | Moderate — every 7–10 days in summer | Mildly toxic to pets |
| Tree Fuchsia | Bright indirect light (just back from a sunny window) | Every 5-7 days in summer, reducing to every 14 days in winter | Pet-safe |
| Tree Kopsia | Bright indirect light (just back from a sunny window) | Every 5-7 days in growth, every 10-14 days in winter | Toxic to pets |
| Tree philodendron | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Tree rhododendron | Bright indirect light (just back from a sunny window) | Every 7–10 days in the growing season; monthly in winter | Toxic to pets |
| Trembling Brake Fern | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil feels dry, roughly every 5-7 days in summer | Pet-safe |
| Tremula Pteris Fern | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of mix is dry, roughly every 4-6 days | Pet-safe |
| Treub's Scindapsus | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Triangle Fern | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist during the growing season; water when the top 2-3 cm begins to dry | Toxic to pets |
| Triangle Fig | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-12 days | Toxic to pets |
| Triangle palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Triangle Staghorn Fern | Bright indirect light (just back from a sunny window) | When the mount or shield fronds feel dry, soak every 7-14 days in summer | Pet-safe |
| Triangular Masdevallia | Medium indirect light (a couple of metres from a window) | Daily in hot weather; every 2–3 days in spring and autumn | Pet-safe |
| Triangular Rhipsalis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Trichoglottis brachiata | Bright indirect light (just back from a sunny window) | Water frequently as roots dry, often daily in warm weather on a mount | Mildly toxic to pets |
| Tricolor Bladderwort | Bright indirect light (just back from a sunny window) | Keep substrate saturated or in a shallow tray of 1–3 cm of water at all times | Pet-safe |
| Tricolor Ti Plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Trim Greenhood | Medium indirect light (a couple of metres from a window) | Lightly moist during active growth (autumn–spring), roughly every 5-7 days | Pet-safe |
| Tropic Snow Dumb Cane | Medium indirect light (a couple of metres from a window) | Every 7–10 days in the growing season; every 14–18 days in winter | Toxic to pets |
| Tropical Crocus | Medium indirect light (a couple of metres from a window) | Every 5–7 days during the growing season; minimal to none during winter dormancy | Pet-safe |
| Tropical pitcher plant | Bright indirect light (just back from a sunny window) | Keep the compost damp at all times, never bone-dry; in practice water with pure water every 2-4 days depending on warmth | Pet-safe |
| Tropical Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep media constantly moist; water every 2-4 days with mineral-free water | Pet-safe |
| Tropical Pitcher Plant 'Ventrata' | Bright indirect light (just back from a sunny window) | Keep mix evenly moist; water every few days, not standing in a deep tray | Pet-safe |
| Tropical Sage | Medium indirect light (a couple of metres from a window) | Regular while establishing; reduced once established | Pet-safe |
| Tropical Sundew | Bright indirect light (just back from a sunny window) | Keep tray permanently wet | Pet-safe |
| True lily | Bright indirect light (just back from a sunny window) | Keep evenly moist while growing, every 5-7 days | Toxic to pets |
| Truncate Haworthia | Bright indirect light (just back from a sunny window) | When soil is fully dry, about every 10-14 days in active growth, minimal in winter | Pet-safe |
| Truncated Gongora | Bright indirect light (just back from a sunny window) | Abundantly during growth; reduced but never dry in winter | Pet-safe |
| Tsao-Ko Cardamom | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water when the top 1 cm dries, roughly every 4-7 days | Mildly toxic to pets |
| Tsubo Bamboo Grass | Medium indirect light (a couple of metres from a window) | 2–3 times per week in summer, once a week in winter | Pet-safe |
| Tsuboii Bamboo | Bright indirect light (just back from a sunny window) | 2–3 times per week in summer, reduce in autumn and winter | Pet-safe |
| Tsusima Holly Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil begins to dry, roughly every 5-7 days | Pet-safe |
| Tuberous Begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 3-5 days in summer | Toxic to pets |
| Tuberous Begonia 'Nonstop' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 4-7 days in growth | Toxic to pets |
| Tuckers King Palm | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Tuerckheim Canna | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water every 4-6 days during warm months | Pet-safe |
| Tuerckheim's Pleurothallis | Medium indirect light (a couple of metres from a window) | Every 1–2 days in summer; every 3–5 days in cooler months | Pet-safe |
| Tufted Hair Grass | Bright indirect light (just back from a sunny window) | Keep soil consistently moist, watering deeply 1-2 times weekly in dry spells | Mildly toxic to pets |
| Tufted Loosestrife | Medium indirect light (a couple of metres from a window) | Permanently wet to shallow aquatic; bog garden or shallow pond margin | Pet-safe |
| Tulip Anthurium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 5-7 days in growth | Toxic to pets |
| Tulip Orchid | Bright indirect light (just back from a sunny window) | Water every 3-5 days during active spring and summer growth; significantly reduce from late autumn and rest with minimal watering (once every 3-4 weeks) through winter until new growths emerge | Pet-safe |
| Tulista Marginata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 2-3 weeks in growth; monthly in winter | Pet-safe |
| Tulista Pumila | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 2-3 weeks in growth; monthly in winter | Pet-safe |
| Tuolumne Fawn Lily | Medium indirect light (a couple of metres from a window) | Consistently moist during growth (late winter to early summer); do not allow to dry out even during dormancy | Mildly toxic to pets |
| Turbo Peperomia | Medium indirect light (a couple of metres from a window) | Every 7–10 days in terrariums; every 10–14 days in open pots | Pet-safe |
| Turk's Cap Cactus | Bright indirect light (just back from a sunny window) | When the mix is fully dry, about every 1-2 weeks in summer; sparse in winter | Mildly toxic to pets |
| Turk's Cap Lily | Bright indirect light (just back from a sunny window) | Regular during active growth in spring and summer; keep soil consistently moist but not waterlogged | Toxic to pets |
| Turkish Red Sage | Bright indirect light (just back from a sunny window) | Allow to dry between waterings | Pet-safe |
| Turtle Vine | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (about 1 inch) of soil feels dry, roughly weekly in summer | Mildly toxic to pets |
| Tweedie's Lipstick Plant | Bright indirect light (just back from a sunny window) | When top 2–3 cm of compost dry out | Pet-safe |
| Tweedy's Lewisia | Bright indirect light (just back from a sunny window) | Regular in spring; near-dry from midsummer to early autumn | Pet-safe |
| Twiggy Lepanthes | Medium indirect light (a couple of metres from a window) | Daily misting; substrate must stay consistently moist | Pet-safe |
| Twin-Flowered Air Plant | Bright indirect light (just back from a sunny window) | Mist 2–3 times per week, or a 20-minute soak once a week | Pet-safe |
| Twinkle Oncidium | Bright indirect light (just back from a sunny window) | When the top of the mix begins to dry, about every 4-6 days | Pet-safe |
| Twinleaf | Medium indirect light (a couple of metres from a window) | 2 times per week during spring growth; reduce through summer | Mildly toxic to pets |
| Twisted Aichryson | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in spring and summer; monthly in winter | Mildly toxic to pets |
| Twisted Air Plant | Bright indirect light (just back from a sunny window) | Soak 20-30 minutes weekly; mist 2-3 times per week | Pet-safe |
| Twisted Racinaea | Bright indirect light (just back from a sunny window) | Mist or drench 3-4 times per week; central cup kept lightly moist | Pet-safe |
| Twisted Restrepia | Medium indirect light (a couple of metres from a window) | Every 2–4 days; maintain light but consistent moisture | Pet-safe |
| Twisted Stanhopea | Medium indirect light (a couple of metres from a window) | 3–5 times per week in active growth; reduce in winter | Pet-safe |
| Twisted Trichopilia | Medium indirect light (a couple of metres from a window) | Water when the medium is nearly dry at the surface, roughly every 5-8 days in active growth; reduce to every 10-14 days in cooler months during rest | Pet-safe |
| Twisted Trillium | Medium indirect light (a couple of metres from a window) | Moderate moisture in spring; reduced in summer dormancy | Mildly toxic to pets |
| Twisted-Fruit Air Plant | Bright indirect light (just back from a sunny window) | Mist daily in spring through autumn; reduce in winter | Pet-safe |
| Two-Color Cattleya | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; every 10–14 days in the winter rest | Pet-safe |
| Two-colored Lacaena | Medium indirect light (a couple of metres from a window) | Water when the medium is nearly dry at the surface, roughly every 5-8 days in active growth; reduce to every 10-14 days in cooler months | Pet-safe |
| Two-edged Pleurothallis | Medium indirect light (a couple of metres from a window) | Every 1–2 days in warm months; every 2–3 days in winter | Pet-safe |
| Two-leaf Squill | Bright indirect light (just back from a sunny window) | Naturally watered in spring; needs no supplemental irrigation once established | Toxic to pets |
| Two-Petal Begonia | Medium indirect light (a couple of metres from a window) | Every 7–10 days; less in cooler months | Toxic to pets |
| Two-Ranked Aechmea | Bright indirect light (just back from a sunny window) | Refresh central cup every 7–10 days; water soil every 2–3 weeks | Pet-safe |
| Two-Ranked Air Plant | Bright indirect light (just back from a sunny window) | Twice weekly in summer, once weekly in winter | Pet-safe |
| Two-ranked Bromeliad | Bright indirect light (just back from a sunny window) | Every 1–2 weeks | Pet-safe |
| Two-Spiked Billbergia | Bright indirect light (just back from a sunny window) | Every 2–3 weeks (soil); cup refreshed every 2–4 weeks | Pet-safe |
| Typhonium brownii | Medium indirect light (a couple of metres from a window) | Keep evenly moist in growth, watering when the top 2-3 cm dries; reduce sharply once foliage yellows | Toxic to pets |
| Typhonium trilobatum | Medium indirect light (a couple of metres from a window) | Keep evenly moist during active growth, about every 3-5 days; reduce in cool or dry rest periods | Toxic to pets |
| Typhonium venosum | Bright indirect light (just back from a sunny window) | Water regularly while the leaf is in growth; keep the tuber dry during dormancy | Toxic to pets |
| Ukhrul Fan Palm | Bright indirect light (just back from a sunny window) | Weekly during the growing season, reduced in winter | Pet-safe |
| Umbrella Bamboo | Medium indirect light (a couple of metres from a window) | Twice weekly during establishment; every 5–7 days in summer once established | Pet-safe |
| Umbrella Magnolia | Medium indirect light (a couple of metres from a window) | Weekly during dry spells; keep soil evenly moist but not waterlogged | Pet-safe |
| Umbrella Plant | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Umbrella Tree | Bright indirect light (just back from a sunny window) | Roughly every 7-10 days; let the top 2-3 cm of soil dry between waterings | Toxic to pets |
| Unequal-Leaf Gibbaeum | Bright indirect light (just back from a sunny window) | Sparingly in winter (active season); essentially zero in summer (June–September dormancy) | Pet-safe |
| Unequal-Leaf Peperomia | Bright indirect light (just back from a sunny window) | Every 10-14 days in the growing season; less in winter | Pet-safe |
| Unequal-leaf Primulina | Bright indirect light (just back from a sunny window) | Every 10–14 days during active growth; every 3–4 weeks in winter | Mildly toxic to pets |
| Unscented Dendrobium | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; nearly dry in the winter rest (October–February) | Pet-safe |
| Upright Hedge Parsley | Medium indirect light (a couple of metres from a window) | Moderate; keep soil evenly moist | Mildly toxic to pets |
| Upright Nidularium | Bright indirect light (just back from a sunny window) | Weekly during growing season; reduce in winter | Pet-safe |
| Upright Plum Yew | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, roughly every 10-14 days | Mildly toxic to pets |
| Urn Plant (Aechmea fasciata) | Bright indirect light (just back from a sunny window) | Keep ~1 inch of water in the central cup at all times; flush and refill monthly. Lightly moisten the potting mix when the top inch dries; reduce in winter. | Mildly toxic to pets |
| Ursula's Red Painted Fern | Medium indirect light (a couple of metres from a window) | Every 5–7 days in the growing season, reduce in winter | Pet-safe |
| Utricularia alpina | Bright indirect light (just back from a sunny window) | Keep the mix moist to wet year-round, with a short drier rest possible | Mildly toxic to pets |
| Utricularia bisquamata | Bright indirect light (just back from a sunny window) | Keep the medium constantly wet, standing in a shallow tray | Mildly toxic to pets |
| Utricularia calycifida | Bright indirect light (just back from a sunny window) | Keep constantly wet by tray-standing year-round | Mildly toxic to pets |
| Utricularia livida | Bright indirect light (just back from a sunny window) | Keep constantly wet by tray-standing year-round | Mildly toxic to pets |
| Utricularia longifolia | Bright indirect light (just back from a sunny window) | Keep permanently wet via tray-standing year-round | Mildly toxic to pets |
| Utricularia nelumbifolia | Bright indirect light (just back from a sunny window) | Keep permanently waterlogged, never letting the medium dry | Mildly toxic to pets |
| Utricularia sandersonii | Bright indirect light (just back from a sunny window) | Keep the media constantly wet, standing in 1-2 cm of water | Mildly toxic to pets |
| Valdez's Aztec Cactus | Bright indirect light (just back from a sunny window) | When the mix is nearly dry, roughly every 14-28 days in the growing season; once every 4-6 weeks in winter | Pet-safe |
| Valdivia Bamboo | Medium indirect light (a couple of metres from a window) | 2-3 times per week in active growth; weekly or less in cool wet winters | Pet-safe |
| Valentine Bleeding Heart | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; water every 4-6 days in spring, easing off as it goes dormant | Toxic to pets |
| Vallisneria americana | Medium indirect light (a couple of metres from a window) | Submerged aquatic; keep continuously underwater with a 25-30% water change weekly | Mildly toxic to pets |
| Vallisneria gigantea | Medium indirect light (a couple of metres from a window) | Submerged aquatic; keep continuously underwater with a 25-30% water change weekly | Mildly toxic to pets |
| Vallisneria nana | Medium indirect light (a couple of metres from a window) | Submerged aquatic; keep continuously underwater with a 25-30% water change weekly | Mildly toxic to pets |
| Vallisneria spiralis | Medium indirect light (a couple of metres from a window) | Submerged aquatic; keep continuously underwater with a 25-30% water change weekly | Mildly toxic to pets |
| Vallisneria-Leaved Butterwort | Bright indirect light (just back from a sunny window) | Keep constantly moist to wet during the growing season (spring–autumn); reduce to near-dry during winter hibernaculum phase | Mildly toxic to pets |
| Vandeleur's Cape Primrose | Bright indirect light (just back from a sunny window) | Every 10–14 days; allow compost to dry slightly between waterings | Pet-safe |
| Vanilla Orchid | Bright indirect light (just back from a sunny window) | Water when the top 2-3 cm of medium is dry, roughly every 5-7 days in summer; every 10-14 days in winter | Pet-safe |
| Vanuatu Fan Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 6-9 days | Pet-safe |
| Variable Air Plant | Bright indirect light (just back from a sunny window) | Soak 30 minutes once or twice weekly; mist 2-3 times per week | Pet-safe |
| Variable Dancing Ginger | Medium indirect light (a couple of metres from a window) | 2–3 times per week during active growth; once every 2–3 weeks during dormancy | Mildly toxic to pets |
| Variable Epidendrum | Bright indirect light (just back from a sunny window) | Every 4–7 days during growth; every 10–12 days in cooler months | Pet-safe |
| Variable Zamia | Bright indirect light (just back from a sunny window) | Every 10–14 days in growing season; every 3–5 weeks in winter | Toxic to pets |
| Variable-Hair Chirita | Bright indirect light (just back from a sunny window) | Every 7–10 days | Pet-safe |
| Variable-Leaf Pitcairnia | Bright indirect light (just back from a sunny window) | every 7–10 days in the growing season, every 14–21 days in the dry season | Pet-safe |
| Variable-Leaved Butterwort | Bright indirect light (just back from a sunny window) | Tray-water in summer; bone-dry in winter bulb dormancy | Mildly toxic to pets |
| Variegata Purple Moor Grass | Bright indirect light (just back from a sunny window) | Every 7-14 days; keep moderately moist to moist | Pet-safe |
| Variegated Basket Grass | Bright indirect light (just back from a sunny window) | Every 5–7 days in growing season; every 10–14 days in winter | Pet-safe |
| Variegated Bear's Paw | Bright indirect light (just back from a sunny window) | Every 3–4 weeks, or when soil is completely dry | Toxic to pets |
| Variegated Carrion Flower | Bright indirect light (just back from a sunny window) | Every 14–21 days in summer; very sparingly (once monthly or less) in winter | Pet-safe |
| Variegated Dwarf Schefflera | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Variegated Elephant Bush | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 1-2 weeks in summer, monthly in winter | Pet-safe |
| Variegated Elephant Bush | Bright indirect light (just back from a sunny window) | When the top 3–4 cm of soil is dry, roughly every 10–14 days in summer and every 3–4 weeks in winter | Pet-safe |
| Variegated Greater Periwinkle | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; reduce to every 10–14 days in cooler months | Toxic to pets |
| Variegated Greater Pond Sedge | Bright indirect light (just back from a sunny window) | Keep consistently wet — tolerates standing water | Pet-safe |
| Variegated Hiba Arborvitae | Bright indirect light (just back from a sunny window) | Once every 7-10 days, keeping soil consistently moist but not waterlogged | Toxic to pets |
| Variegated Japanese Spurge | Medium indirect light (a couple of metres from a window) | Every 5–7 days during establishment; once established, water during dry spells | Mildly toxic to pets |
| Variegated Lady Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Pet-safe |
| Variegated Lilyturf | Medium indirect light (a couple of metres from a window) | Weekly during establishment; established plants are drought-tolerant, needing water only during prolonged summer drought | Mildly toxic to pets |
| Variegated Liveforever | Bright indirect light (just back from a sunny window) | Every 10–14 days from late autumn through spring when leaves are present; withhold completely in summer dormancy | Pet-safe |
| Variegated Monstera Albo | Bright indirect light (just back from a sunny window) | When the top 5 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Variegated Moon Cactus | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in growth; minimal in winter | Pet-safe |
| Variegated pieris | Bright indirect light (just back from a sunny window) | Weekly; do not allow soil to dry out | Toxic to pets |
| Variegated Purple Moor Grass | Bright indirect light (just back from a sunny window) | Regular; keep soil consistently moist | Pet-safe |
| Variegated Purple Moor Grass | Bright indirect light (just back from a sunny window) | Weekly during growing season; keep consistently moist | Pet-safe |
| Variegated Shell Ginger | Bright indirect light (just back from a sunny window) | Consistently moist year-round; reduce slightly in winter | Mildly toxic to pets |
| Variegated Shell Ginger | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Mildly toxic to pets |
| Variegated Spider Plant | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in summer | Pet-safe |
| Variegated String of Hearts | Bright indirect light (just back from a sunny window) | When the soil is nearly dry, roughly every 10-14 days | Pet-safe |
| Variegated String of Pearls | Bright indirect light (just back from a sunny window) | When soil is fully dry, roughly every 10-14 days in growth | Toxic to pets |
| Variegated Sweetheart Hoya | Bright indirect light (just back from a sunny window) | When the mix is almost fully dry, every 2-3 weeks | Pet-safe |
| Variegated Velvet Grass | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Variegated Xylobium | Bright indirect light (just back from a sunny window) | Water when the top 2-3 cm of the potting medium is dry, roughly every 5-8 days in active growth; reduce to every 10-14 days in cooler months | Pet-safe |
| Variegated Yellow Sedge | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water every 5-7 days in dry spells and never let containers dry out | Mildly toxic to pets |
| Variegated-Colour Begonia | Bright indirect light (just back from a sunny window) | Every 7–14 days (allow the top 1–2 cm of compost to dry; err on the side of slight dryness) | Toxic to pets |
| Varnished Air Plant | Bright indirect light (just back from a sunny window) | Weekly soak | Pet-safe |
| Vasey's Trillium | Medium indirect light (a couple of metres from a window) | Consistently moist through spring; reduce over summer dormancy | Mildly toxic to pets |
| Vasse's Staghorn Fern | Bright indirect light (just back from a sunny window) | Weekly soaking in the growing season; fortnightly in cooler months | Pet-safe |
| Vazquez's Zamia | Medium indirect light (a couple of metres from a window) | Every 7–10 days in summer; every 14–21 days in winter | Toxic to pets |
| Veilchenblau Rose | Bright indirect light (just back from a sunny window) | Deeply once or twice weekly while establishing; mature plants when the top few centimetres of soil dry, and they tolerate some drought | Pet-safe |
| Vein-leaved Zamia | Bright indirect light (just back from a sunny window) | Every 10–14 days (allow top 3–5 cm to dry) | Toxic to pets |
| Veined Begonia (Venosa) | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry; sparingly in winter (roughly monthly) | Toxic to pets |
| Veldt Cyanotis | Bright indirect light (just back from a sunny window) | Every 5–7 days in summer; every 10–14 days in winter | Mildly toxic to pets |
| Velick's Air Plant | Bright indirect light (just back from a sunny window) | Weekly soak | Pet-safe |
| Velvet Calathea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (about 1 inch) of soil is dry, roughly every 5-7 days in the growing season | Pet-safe |
| Velvet Calathea | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Velvet Calathea (Furry Feather) | Bright indirect light (just back from a sunny window) | When the top 2-3cm (1 inch) of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Velvet Calathea Jungle | Bright indirect light (just back from a sunny window) | Roughly weekly; when the top 2-3 cm of soil is just dry | Pet-safe |
| Velvet Cotyledon | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season, every 3–4 weeks in winter | Toxic to pets |
| Velvet Leaf Philodendron | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Velvet Leaf Vine | Medium indirect light (a couple of metres from a window) | Every 7–10 days in growing season; every 14–21 days in winter | Toxic to pets |
| Velvet Sage | Bright indirect light (just back from a sunny window) | Weekly | Pet-safe |
| Venus Maidenhair Fern | Bright indirect light (just back from a sunny window) | Keep constantly moist, often every 2-3 days | Pet-safe |
| Verschaffelt's Peperomia | Bright indirect light (just back from a sunny window) | Every 7–10 days in growing season; every 14–21 days in winter | Pet-safe |
| Verticillata Wax Plant | Bright indirect light (just back from a sunny window) | Every 1-2 weeks; when the top 3cm of mix is dry | Pet-safe |
| Victoria Lady Fern | Medium indirect light (a couple of metres from a window) | 2–3 times per week in growing season; reduce in winter | Pet-safe |
| Vidal's Lady Fern | Medium indirect light (a couple of metres from a window) | 2–3 times per week in growing season; reduce in winter | Pet-safe |
| Viguier's Angraecum | Bright indirect light (just back from a sunny window) | Freely throughout growing season; reduce in winter | Pet-safe |
| Villena's Velvet Anthurium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (about the top 20-30% of the pot) dries out | Toxic to pets |
| Vilmorin Japanese Cedar | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in the growing season | Mildly toxic to pets |
| Vining Peperomia | Medium indirect light (a couple of metres from a window) | Every 7–10 days in spring/summer; every 2–3 weeks in winter | Pet-safe |
| Violet Corkscrew Plant | Bright indirect light (just back from a sunny window) | Keep substrate constantly moist to wet; shallow tray method recommended | Mildly toxic to pets |
| Violet Wood Sorrel | Bright indirect light (just back from a sunny window) | Moderate during active growth (spring); very little during summer dormancy | Toxic to pets |
| Virgin Bladderwort | Bright indirect light (just back from a sunny window) | Keep substrate permanently moist; shallow tray method | Mildly toxic to pets |
| Virgin Orchid | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; reduce to every 10–14 days in autumn–winter rest | Pet-safe |
| Virginia Bluebells | Medium indirect light (a couple of metres from a window) | 1–2 inches per week in spring; minimal needed once dormant | Pet-safe |
| Virginia Chain Fern | Medium indirect light (a couple of metres from a window) | Frequently — keep soil consistently moist to wet | Pet-safe |
| Virginia Spring Beauty | Bright indirect light (just back from a sunny window) | Moderate in spring; negligible once dormant in summer | Pet-safe |
| Virginia Stock | Bright indirect light (just back from a sunny window) | Weekly (keep soil evenly moist but not waterlogged) | Mildly toxic to pets |
| Volcanic Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer, every 3–4 weeks in winter | Pet-safe |
| Voodoo Lily | Bright indirect light (just back from a sunny window) | Water the leaf stage when the top 2-3 cm of soil is dry, roughly every 5-7 days; keep the dormant tuber dry | Toxic to pets |
| Vriesea | Bright indirect light (just back from a sunny window) | Keep central cup filled; water soil weekly | Pet-safe |
| Vriesea 'Astrid' | Bright indirect light (just back from a sunny window) | Keep the central cup topped up; water the mix when the top 2-3 cm is dry | Pet-safe |
| Vriesea 'Christine' | Bright indirect light (just back from a sunny window) | Keep the central cup topped up; flush and refill it weekly | Pet-safe |
| Vriesea 'Poelmanii' | Bright indirect light (just back from a sunny window) | Keep the central cup filled; flush and refill every 1-2 weeks | Pet-safe |
| Vriesea carinata | Bright indirect light (just back from a sunny window) | Keep the central cup filled; flush and refill every 1-2 weeks | Pet-safe |
| Vriesea fosteriana | Bright indirect light (just back from a sunny window) | Keep the central cup filled; flush and refill every 1-2 weeks | Pet-safe |
| Vriesea hieroglyphica | Bright indirect light (just back from a sunny window) | Keep the central cup filled; flush and refill every 1-2 weeks | Pet-safe |
| Vriesea platynema | Bright indirect light (just back from a sunny window) | Keep the central cup filled; flush and refill every 1-2 weeks | Pet-safe |
| Wagner's Air Plant | Bright indirect light (just back from a sunny window) | 2–3 times per week (misting) or weekly soak | Pet-safe |
| Wagner's Sage | Bright indirect light (just back from a sunny window) | Water regularly to maintain consistent moisture | Pet-safe |
| Wall Monanthes | Medium indirect light (a couple of metres from a window) | Every 1–2 weeks in the growing season; every 3–4 weeks in winter | Pet-safe |
| Wall Rue | Bright indirect light (just back from a sunny window) | Rarely needs watering in the ground; water container plants only when the crevice substrate dries | Pet-safe |
| Wall-rue Spleenwort | Medium indirect light (a couple of metres from a window) | Sparingly — only when the substrate is dry to the touch | Mildly toxic to pets |
| Wallich's Begonia | Bright indirect light (just back from a sunny window) | When top 2–3 cm of soil is dry | Toxic to pets |
| Wallich's Cranesbill | Bright indirect light (just back from a sunny window) | Once or twice weekly during dry spells once established | Pet-safe |
| Wallich's Staghorn Fern | Bright indirect light (just back from a sunny window) | Soak every 7–10 days in the growing season; every 14 days in winter | Pet-safe |
| Wallich's Strobilanthes | Bright indirect light (just back from a sunny window) | Weekly during the growing season; reduce after foliage dies back in autumn | Mildly toxic to pets |
| Wallich's Wood Fern | Medium indirect light (a couple of metres from a window) | Regular in first season; moderate once established | Pet-safe |
| Wallichiana Fern | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil begins to dry, about every 5-7 days | Mildly toxic to pets |
| Wallichii Staghorn Fern | Bright indirect light (just back from a sunny window) | When the shield fronds and mounting medium feel dry, roughly every 7-10 days in summer | Pet-safe |
| Wallis's Dragon Orchid | Medium indirect light (a couple of metres from a window) | Every 2–3 days; medium kept continuously moist | Pet-safe |
| Wandae Staghorn Fern | Bright indirect light (just back from a sunny window) | Soak when the mount approaches dryness, roughly weekly in summer and every 1-2 weeks in winter | Pet-safe |
| Wandering dude | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, every 5-7 days | Toxic to pets |
| Wandering Orthophytum | Bright indirect light (just back from a sunny window) | Every 7–10 days in growth; every 14 days in winter | Pet-safe |
| Waras' Cryptanthus | Bright indirect light (just back from a sunny window) | Every 7–10 days | Pet-safe |
| Waras' Earth Star | Bright indirect light (just back from a sunny window) | When the top 2 cm of potting mix is dry, roughly every 7-10 days | Pet-safe |
| Waras' Parodia | Bright indirect light (just back from a sunny window) | Every 10-14 days in spring/summer; every 3-4 weeks in autumn; once in winter or withheld entirely | Mildly toxic to pets |
| Warming's Sinningia | Bright indirect light (just back from a sunny window) | Moderate during active growth; dry during dormancy | Pet-safe |
| Warneckii Dracaena | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Warscewicz's Cattleya | Bright indirect light (just back from a sunny window) | Every 7-10 days during active growth; reduce to every 3-4 weeks during the post-flowering rest | Pet-safe |
| Warszewiczs Kohleria | Bright indirect light (just back from a sunny window) | Every 7–10 days during growth; minimal during dormancy | Pet-safe |
| Wart Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is just dry, roughly every 5-7 days | Mildly toxic to pets |
| Warty Brassavola | Bright indirect light (just back from a sunny window) | Every 4–6 days in active growth; every 7–10 days in cooler, slower months | Pet-safe |
| Warty Gasteria | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in summer, monthly or less in winter | Pet-safe |
| Warty Scaphosepalum | Medium indirect light (a couple of metres from a window) | When the surface of the medium is just barely dry, roughly every 3-5 days | Pet-safe |
| Watch Chain Plant | Bright indirect light (just back from a sunny window) | Every 1-2 weeks in spring/summer; roughly monthly or less in winter | Mildly toxic to pets |
| Water Avens | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist to wet; never let it dry out | Mildly toxic to pets |
| Water Clover Fern | Bright indirect light (just back from a sunny window) | Always in standing water; top up to keep the rhizome submerged | Mildly toxic to pets |
| Water Forget-me-not | Bright indirect light (just back from a sunny window) | Permanently moist to marginal aquatic; up to 10 cm over crown | Mildly toxic to pets |
| Water Lily Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in spring and summer; every 3-4 weeks in autumn; almost none in winter | Pet-safe |
| Water Spangles | Bright indirect light (just back from a sunny window) | Permanent floating aquatic — sits on the water surface | Pet-safe |
| Water Violet | Bright indirect light (just back from a sunny window) | Fully submerged aquatic; grows in 20–80 cm of water | Pet-safe |
| Watercress Fern | Medium indirect light (a couple of metres from a window) | When the surface starts to dry, roughly every 3-5 days | Mildly toxic to pets |
| Waterlily Taro | Bright indirect light (just back from a sunny window) | Permanently submerged roots or standing water; substrate must remain waterlogged | Toxic to pets |
| Watermelon Begonia | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Watermelon Dischidia | Bright indirect light (just back from a sunny window) | When the top of the mix dries out, roughly every 7-10 days | Mildly toxic to pets |
| Watermelon Peperomia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 7-14 days in summer and every 2-3 weeks in winter | Pet-safe |
| Watermelon Peperomia 'Variegata' | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 7-10 days | Pet-safe |
| Wavy Aponogeton | Medium indirect light (a couple of metres from a window) | Permanently submerged; weekly 25% water changes recommended | Pet-safe |
| Wavy Begonia | Bright indirect light (just back from a sunny window) | Every 7–10 days in active growth; every 14 days in winter | Toxic to pets |
| wavy hair grass | Bright indirect light (just back from a sunny window) | Water every 1-2 weeks; drought-tolerant once established in cool climates | Mildly toxic to pets |
| Wavy-Leaf Begonia | Bright indirect light (just back from a sunny window) | When the top 1 inch of soil is dry | Toxic to pets |
| Wavy-margin Primulina | Bright indirect light (just back from a sunny window) | Every 10–14 days in spring and summer; every 3–4 weeks in autumn and winter | Mildly toxic to pets |
| Wax Begonia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 5-7 days | Toxic to pets |
| Wax plant | Bright indirect light (just back from a sunny window) | When the soil is dry, every 10-14 days | Pet-safe |
| Wax-Leaf Begonia | Bright indirect light (just back from a sunny window) | When the top 1–2 cm of soil feels dry | Toxic to pets |
| Weberbauer's Lepanthes | Medium indirect light (a couple of metres from a window) | Near-daily misting; substrate must not dry completely at any point | Pet-safe |
| Wedge-Shaped Miltonia | Bright indirect light (just back from a sunny window) | Every 3–4 days in growth, weekly in winter | Pet-safe |
| Weeping Brown Sedge | Bright indirect light (just back from a sunny window) | Weekly or when the top 3 cm of soil is dry | Pet-safe |
| Weeping Eastern Hemlock | Medium indirect light (a couple of metres from a window) | Every 1–2 weeks; more in hot or dry conditions | Pet-safe |
| Weeping Eastern Hemlock | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Weeping fig | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Weeping Fig Variegata | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Weeping Moss | Medium indirect light (a couple of metres from a window) | Fully submerged — permanent aquatic plant | Pet-safe |
| Weeping Podocarpus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days | Toxic to pets |
| Weigela 'Florida Purpurea' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days during the growing season | Mildly toxic to pets |
| Weigela 'My Monet' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days in the growing season | Mildly toxic to pets |
| Weigela 'Nana Variegata' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days once established | Pet-safe |
| Weilbach's Aechmea | Bright indirect light (just back from a sunny window) | Every 2–3 weeks (soil); refresh central tank every 3–4 weeks | Pet-safe |
| Weilbach's Aechmea | Bright indirect light (just back from a sunny window) | Refill the central cup every 5-7 days; water the medium when the top 2 cm is dry, roughly every 10-14 days | Pet-safe |
| Welsh Poppy | Medium indirect light (a couple of metres from a window) | Moderate; moist but not waterlogged | Toxic to pets |
| Weltoniensis Begonia | Bright indirect light (just back from a sunny window) | When the top 2 cm of compost feels dry | Toxic to pets |
| Welwitsch's Anchomanes | Medium indirect light (a couple of metres from a window) | Every 7–10 days in active growth; cease watering during dry-season dormancy | Toxic to pets |
| Welwitsch's Anchomanes | Medium indirect light (a couple of metres from a window) | Keep evenly moist during the growing season; reduce to minimal watering during dormancy | Toxic to pets |
| Wendland's Bulbophyllum | Medium indirect light (a couple of metres from a window) | Regularly throughout the year; keep medium consistently moist in summer, slightly drier in winter | Pet-safe |
| Wendland's Bulbophyllum | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of the medium dries, roughly every 5-8 days | Pet-safe |
| Wendland's cape primrose | Bright indirect light (just back from a sunny window) | Every 7–10 days during the growing season; sparingly in winter | Pet-safe |
| Wendland's Lepanthes | Medium indirect light (a couple of metres from a window) | Daily or every 2 days; never dry out | Pet-safe |
| Wenzel's Chain Orchid | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of the potting medium feels dry, roughly every 5-7 days | Pet-safe |
| West African Pitcairnia | Bright indirect light (just back from a sunny window) | Water consistently to keep the growing medium evenly moist during the growing season; allow the top 2–3 cm to dry between waterings in winter. | Mildly toxic to pets |
| West Indian Tree Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil feels just dry, roughly every 5-7 days in warm weather | Pet-safe |
| Western Columbine | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; reduce after flowering | Toxic to pets |
| Western Hemlock | Medium indirect light (a couple of metres from a window) | Weekly during establishment; regular moisture long-term | Pet-safe |
| Western Maidenhair Fern | Medium indirect light (a couple of metres from a window) | When the top 1-2 cm of soil is dry, roughly every 4-6 days | Pet-safe |
| Western Skunk Cabbage | Medium indirect light (a couple of metres from a window) | Permanently moist to wet; boggy or waterlogged conditions required | Toxic to pets |
| Western White Trillium | Medium indirect light (a couple of metres from a window) | Consistently moist spring through early summer; reduced but not completely dry in summer dormancy. | Mildly toxic to pets |
| Whale Fin Snake Plant | Bright indirect light (just back from a sunny window) | every 2-4 weeks, when soil is fully dry | Toxic to pets |
| Wheeler's Peperomia | Medium indirect light (a couple of metres from a window) | Every 10–14 days in summer, every 3–4 weeks in winter | Pet-safe |
| Wheki Tree Fern | Medium indirect light (a couple of metres from a window) | Consistently moist — water deeply 2-3 times per week in dry periods during the growing season | Pet-safe |
| Wherry's Foamflower | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist; water about weekly, more in dry spells | Mildly toxic to pets |
| Wherry's Foamflower | Medium indirect light (a couple of metres from a window) | Once or twice per week in the growing season; reduce significantly in winter. | Mildly toxic to pets |
| Whip Brassavola | Bright indirect light (just back from a sunny window) | Every 3–5 days in summer; every 7–10 days in winter | Pet-safe |
| White Air Plant | Bright indirect light (just back from a sunny window) | Soak for 20–30 minutes once or twice a week | Pet-safe |
| White Anthurium | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| White Arrow Arum | Bright indirect light (just back from a sunny window) | Continuously moist to waterlogged; never allow to dry out | Toxic to pets |
| White Baneberry | Medium indirect light (a couple of metres from a window) | 2–3 times per week in growing season; weekly when dormant | Toxic to pets |
| White bird of paradise | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, every 7-10 days | Toxic to pets |
| White Bird of Paradise | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-14 days depending on season and temperature | Mildly toxic to pets |
| White Bleeding Heart | Medium indirect light (a couple of metres from a window) | Every 3-5 days in active growth; reduce once dormant | Toxic to pets |
| White Campion | Bright indirect light (just back from a sunny window) | Low to moderate; allow soil to approach dryness between waterings | Mildly toxic to pets |
| White Comfrey | Medium indirect light (a couple of metres from a window) | Every 5–10 days during dry periods | Mildly toxic to pets |
| White Dancing Ginger | Medium indirect light (a couple of metres from a window) | 1–2 times per week during active growth; withhold in winter dormancy | Mildly toxic to pets |
| White Dancing Ginger | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 5-7 days in active growth | Mildly toxic to pets |
| White Dendrobium | Bright indirect light (just back from a sunny window) | Every 5–7 days in growth; every 2–3 weeks in winter rest | Pet-safe |
| white double camellia | Bright indirect light (just back from a sunny window) | Regularly throughout the year; moisture critical in summer and autumn | Mildly toxic to pets |
| White Dragon Mondo Grass | Medium indirect light (a couple of metres from a window) | Water when the top 2–3 cm of soil is dry, roughly every 7–10 days in the growing season | Mildly toxic to pets |
| White Egret Orchid | Bright indirect light (just back from a sunny window) | Keep consistently moist during active growth (spring–summer), roughly every 2-4 days | Pet-safe |
| White Enkianthus | Bright indirect light (just back from a sunny window) | Regularly; soil should stay evenly moist | Mildly toxic to pets |
| White Gardenia | Bright indirect light (just back from a sunny window) | Every 7–10 days during growing season; every 14–21 days in winter | Mildly toxic to pets |
| White Ginger Lily | Bright indirect light (just back from a sunny window) | Water generously every 2–4 days in active growth; reduce to sparingly in winter dormancy | Mildly toxic to pets |
| White Ginger Lily | Bright indirect light (just back from a sunny window) | Keep soil consistently moist, watering roughly every 3-5 days during active growth | Pet-safe |
| White Knight Philodendron | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, about every 7-10 days | Toxic to pets |
| White Laelia | Bright indirect light (just back from a sunny window) | Every 5–7 days in spring and autumn; once every 2–3 weeks in summer dry rest | Pet-safe |
| White Magic Flower | Bright indirect light (just back from a sunny window) | Keep evenly moist spring through autumn; withhold entirely in winter | Pet-safe |
| White Marsh Marigold | Bright indirect light (just back from a sunny window) | Permanently moist to boggy; crown should sit just above water level | Mildly toxic to pets |
| White Marsh Marigold | Bright indirect light (just back from a sunny window) | Permanently moist to wet; boggy soil or shallow pondside | Mildly toxic to pets |
| White Mugwort | Medium indirect light (a couple of metres from a window) | Weekly or when top 2–3 cm of soil dries | Mildly toxic to pets |
| White Nancy Dead Nettle | Medium indirect light (a couple of metres from a window) | Every 7–10 days during active growth; reduce in winter | Pet-safe |
| White Periwinkle | Medium indirect light (a couple of metres from a window) | Weekly during establishment; self-sufficient in average rainfall once established | Toxic to pets |
| White Princess Philodendron | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days | Toxic to pets |
| White Sails | Medium indirect light (a couple of metres from a window) | Every 7–10 days during active growth; reduce to every 14 days in winter | Toxic to pets |
| White Shrimp Plant | Bright indirect light (just back from a sunny window) | When the top 2–3 cm (1 in) of compost dries out | Mildly toxic to pets |
| White Skunk Cabbage | Medium indirect light (a couple of metres from a window) | Continuously moist to waterlogged; never allow to dry out | Toxic to pets |
| White Spider Orchid | Bright indirect light (just back from a sunny window) | Moderate during autumn to spring; completely dry in summer | Pet-safe |
| White St Dabeoc's Heath | Bright indirect light (just back from a sunny window) | Moderate — water when top 2–3 cm of soil is dry | Mildly toxic to pets |
| White Tabernaemontana | Bright indirect light (just back from a sunny window) | Twice weekly during active growth; once per week or less in winter | Toxic to pets |
| White Temple Bells | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, roughly every 7 days during active growth | Pet-safe |
| White Tiger Nerve Plant | Bright indirect light (just back from a sunny window) | Every 5–7 days; keep soil evenly and consistently moist | Pet-safe |
| White Towers Toad Lily | Medium indirect light (a couple of metres from a window) | Keep evenly moist; water when the surface starts to dry, often once or twice weekly in summer | Mildly toxic to pets |
| White Trillium | Medium indirect light (a couple of metres from a window) | Weekly during spring growth; reduce after dormancy | Mildly toxic to pets |
| White Trout Lily | Medium indirect light (a couple of metres from a window) | Keep consistently moist while in growth (spring); reduce after dormancy | Mildly toxic to pets |
| white trumpet sinningia | Bright indirect light (just back from a sunny window) | Every 7–10 days in active growth; reduce to rare misting or none during dormancy | Pet-safe |
| White Wizard Philodendron | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, about every 7-10 days | Toxic to pets |
| White wood aster | Medium indirect light (a couple of metres from a window) | Every 1–2 weeks during establishment; largely self-sufficient once established in woodland settings | Pet-safe |
| White Wood Aster | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, roughly every 10-14 days | Mildly toxic to pets |
| White Young's Barrenwort | Medium indirect light (a couple of metres from a window) | Water weekly, or when the top 2 cm of soil dries, particularly during establishment; reduce frequency once settled | Mildly toxic to pets |
| White-Bark Magnolia | Bright indirect light (just back from a sunny window) | Weekly during dry spells for the first 3 years; every 2 weeks when established | Pet-safe |
| White-Branch Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–14 days in summer, every 3–4 weeks in winter | Pet-safe |
| White-Budded Sundew | Bright indirect light (just back from a sunny window) | Keep the tray permanently moist in the growing season; reduce in summer heat dormancy | Mildly toxic to pets |
| White-Flowered Lycaste | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; every 14–21 days during winter rest | Pet-safe |
| White-Leaf Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; reduce to monthly or less in winter | Pet-safe |
| White-Lip Oncidium | Bright indirect light (just back from a sunny window) | Every 5–7 days in active growth; every 14–21 days in winter rest | Pet-safe |
| White-red Trichocentrum | Bright indirect light (just back from a sunny window) | When bark is nearly dry, every 6-9 days in growth; every 10-14 days in cooler, lower-light months | Pet-safe |
| Whitelock's Ceratozamia | Medium indirect light (a couple of metres from a window) | Weekly to every 10 days in growing season; reduce in winter | Toxic to pets |
| Whorled Rosinweed | Bright indirect light (just back from a sunny window) | Every 1-2 weeks once established | Pet-safe |
| Whorled Solomon's Seal | Medium indirect light (a couple of metres from a window) | Every 5–7 days during the growing season; reduce in autumn | Mildly toxic to pets |
| Wide-leaf Ceratozamia | Medium indirect light (a couple of metres from a window) | Every 2–3 weeks | Toxic to pets |
| Wide-leaved Grape Hyacinth | Bright indirect light (just back from a sunny window) | Every 7–10 days in spring; dry over summer | Mildly toxic to pets |
| Wild Blue Phlox | Medium indirect light (a couple of metres from a window) | Weekly; keep soil evenly moist | Mildly toxic to pets |
| Wild Cardamom | Medium indirect light (a couple of metres from a window) | Regularly throughout the growing season; reduce in winter | Mildly toxic to pets |
| Wild jasmine | Bright indirect light (just back from a sunny window) | Once or twice a week during active growth; reduce in winter | Pet-safe |
| Wild pansy | Bright indirect light (just back from a sunny window) | Every 5–7 days; keep soil evenly moist but not wet | Pet-safe |
| Wild Plantain Heliconia | Bright indirect light (just back from a sunny window) | Every 4–6 days during active growth; reduce in cooler months | Mildly toxic to pets |
| Wild Senna | Bright indirect light (just back from a sunny window) | Weekly in dry periods; tolerates brief flooding | Mildly toxic to pets |
| Wild Teasel | Bright indirect light (just back from a sunny window) | Regular during establishment; tolerates winter wet | Mildly toxic to pets |
| Wild Turmeric | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry during the growing season, roughly every 5-7 days | Mildly toxic to pets |
| Wildwood Twist Painted Fern | Medium indirect light (a couple of metres from a window) | Every 5–7 days; maintain consistent soil moisture | Pet-safe |
| William Buchanan heath | Bright indirect light (just back from a sunny window) | Moderate; water regularly, especially during flowering and in dry summers | Pet-safe |
| Williams rhododendron | Bright indirect light (just back from a sunny window) | Every 7–10 days in growing season; reduce to monthly in winter | Toxic to pets |
| Willow Gentian | Medium indirect light (a couple of metres from a window) | Regular; maintain consistently moist soil throughout the growing season | Mildly toxic to pets |
| Willow-leaf Fig | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil feels dry, roughly every 3-7 days | Toxic to pets |
| Wimsett Brake Fern | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil feels dry, roughly every 7-10 days in summer | Pet-safe |
| Windowed Air Plant | Medium indirect light (a couple of metres from a window) | Keep the central cup filled with water at all times; refresh weekly, and water the medium every 1–2 weeks | Pet-safe |
| Wine Fishtail Palm | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Winged Encyclia | Bright indirect light (just back from a sunny window) | When the pot is dry, roughly every 7-10 days in summer | Pet-safe |
| Winged Peperomia | Bright indirect light (just back from a sunny window) | Every 2–3 weeks (allow compost to dry almost fully between waterings) | Pet-safe |
| Winter Aconite | Medium indirect light (a couple of metres from a window) | Relies on natural rainfall; keep soil moist during active growth | Toxic to pets |
| Winter Gem Boxwood | Medium indirect light (a couple of metres from a window) | When the top 5 cm of soil is dry, about weekly while establishing | Toxic to pets |
| Winter Glow Bergenia | Medium indirect light (a couple of metres from a window) | Every 7–14 days during the growing season; very little in winter | Pet-safe |
| Wintergreen Barberry | Bright indirect light (just back from a sunny window) | When the top 5-8 cm of soil is dry, roughly every 10-14 days | Mildly toxic to pets |
| Wintergreen Boxwood | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, about weekly in summer | Toxic to pets |
| Wintertime prickly heath | Bright indirect light (just back from a sunny window) | Regular; keep evenly moist | Toxic to pets |
| Wisley Gaultheria | Medium indirect light (a couple of metres from a window) | Every 5–7 days in the growing season; less in cool winters | Mildly toxic to pets |
| Wisley Pearl Gaultheria | Bright indirect light (just back from a sunny window) | Regularly; keep soil evenly moist | Toxic to pets |
| Witch Hazel | Bright indirect light (just back from a sunny window) | Keep evenly moist; water in dry spells | Mildly toxic to pets |
| Witteberg Cone Plant | Bright indirect light (just back from a sunny window) | Every 2–3 weeks in autumn–winter; almost none in summer | Pet-safe |
| Wittig's Sophronitis | Bright indirect light (just back from a sunny window) | When the growing medium surface approaches dryness, roughly every 6-9 days | Pet-safe |
| Wolf Eyes Kousa Dogwood | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 10–14 days once mature | Mildly toxic to pets |
| Wolffia arrhiza | Bright indirect light (just back from a sunny window) | Floats permanently on still water; no separate watering | Mildly toxic to pets |
| Wonderful Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–14 days in the growing season, monthly in winter | Pet-safe |
| Wonga Wonga Vine | Bright indirect light (just back from a sunny window) | Every 7–10 days when young; largely self-sufficient once established in ground | Mildly toxic to pets |
| Wood Anemone | Medium indirect light (a couple of metres from a window) | Weekly during spring growth; none required during summer dormancy | Toxic to pets |
| Wood Avens | Medium indirect light (a couple of metres from a window) | Low to moderate — rain-fed in shade | Pet-safe |
| Wood Club-rush | Medium indirect light (a couple of metres from a window) | Permanently moist to wet; tolerates shallow standing water | Pet-safe |
| Wood Fern 'The King' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Mildly toxic to pets |
| Wood Forget-me-not | Medium indirect light (a couple of metres from a window) | Moderate; keep soil moist but well-drained | Pet-safe |
| Wood Melic | Medium indirect light (a couple of metres from a window) | Keep evenly moist while establishing; tolerates dry shade once rooted | Mildly toxic to pets |
| Wood Melick | Medium indirect light (a couple of metres from a window) | Infrequently; drought-tolerant under shade | Pet-safe |
| Wood Vetch | Medium indirect light (a couple of metres from a window) | Low to moderate — prefers moderate moisture with periods of drying | Mildly toxic to pets |
| Wood's Cotyledon | Bright indirect light (just back from a sunny window) | Every 10–14 days when actively growing, every 3–4 weeks in winter | Toxic to pets |
| Wood's Cycad | Bright indirect light (just back from a sunny window) | When the top 5 cm of mix is dry, roughly every 10-14 days in growth | Toxic to pets |
| Woodland Sunflower | Medium indirect light (a couple of metres from a window) | Every 2–3 weeks; drought-tolerant once established | Pet-safe |
| Woodsia ilvensis | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days | Mildly toxic to pets |
| Woodsia obtusa | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days | Mildly toxic to pets |
| Woodwardia fimbriata | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist to wet; check every 2-4 days in growth | Mildly toxic to pets |
| Woodwardia unigemmata | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top 2-3 cm of soil begins to dry, roughly every 4-7 days in growth | Mildly toxic to pets |
| Woolly Bear Begonia | Bright indirect light (just back from a sunny window) | When the top 2–3 cm of soil is dry | Toxic to pets |
| Woolly Heliconia | Bright indirect light (just back from a sunny window) | 2–3 times per week throughout the year; near-continuous in tropical gardens | Mildly toxic to pets |
| Woolly Lip Fern | Bright indirect light (just back from a sunny window) | When the soil is completely dry, approximately every 14-21 days in summer, monthly in winter | Pet-safe |
| Woolly Rose | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in summer | Pet-safe |
| Woolly Sinningia | Bright indirect light (just back from a sunny window) | When top 2–3 cm of compost feels dry during growth | Pet-safe |
| Xanadu Philodendron | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Toxic to pets |
| Xanthosoma 'Lime Zinger' | Bright indirect light (just back from a sunny window) | Keep consistently moist; water when the top 2-3 cm is dry, often every 3-6 days in active growth | Toxic to pets |
| Xanthosoma Albomarginatum | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water when the top 2-3 cm starts to dry | Toxic to pets |
| Xanthosoma Atrovirens | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water deeply 2-3 times weekly in heat | Toxic to pets |
| Xanthosoma Lindenii | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water when the top 2-3 cm just begins to dry | Toxic to pets |
| Xanthosoma Robustum | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water deeply 2-3 times weekly | Toxic to pets |
| Yakushima Rhododendron | Bright indirect light (just back from a sunny window) | Weekly during dry weather; do not allow to dry out in summer or before frost | Toxic to pets |
| Yakushima Rhododendron 'Yaku Princess' | Bright indirect light (just back from a sunny window) | About weekly, more during heat; water when the top 2-3 cm of soil is dry | Toxic to pets |
| Yellow Archangel | Medium indirect light (a couple of metres from a window) | Every 7–14 days; drought-tolerant once established in shade | Mildly toxic to pets |
| Yellow Azalea | Bright indirect light (just back from a sunny window) | Weekly during dry spells; established plants are reasonably drought-tolerant but flower best with consistent moisture | Toxic to pets |
| Yellow Barrenwort | Medium indirect light (a couple of metres from a window) | Weekly during first two seasons; established plants are drought-tolerant and rarely need supplemental watering | Mildly toxic to pets |
| Yellow Bird's Nest | Medium indirect light (a couple of metres from a window) | Maintain water in the central cup; water compost when mostly dry, roughly every 10-14 days | Pet-safe |
| Yellow Cabomba | Bright indirect light (just back from a sunny window) | Fully submerged aquatic; maintain in aquarium water continuously | Pet-safe |
| Yellow Clivia | Bright indirect light (just back from a sunny window) | When top 3-4 cm of soil is dry, roughly every 7-10 days in growth | Toxic to pets |
| Yellow Dancing Ginger | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days during active growth | Mildly toxic to pets |
| Yellow Episcia | Bright indirect light (just back from a sunny window) | When the top 1–2 cm of soil is dry | Pet-safe |
| Yellow Fairybells | Medium indirect light (a couple of metres from a window) | Regular; maintain consistent moisture | Mildly toxic to pets |
| Yellow False Jasmine | Bright indirect light (just back from a sunny window) | Water every 7-10 days during the growing season; reduce to every 2-3 weeks once established and dormancy slows growth | Toxic to pets |
| Yellow Fawnlily | Medium indirect light (a couple of metres from a window) | Consistently moist during active growth (late winter to late spring); minimal after dormancy | Mildly toxic to pets |
| Yellow Foxglove | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly weekly in dry spells | Toxic to pets |
| Yellow Gesneria | Bright indirect light (just back from a sunny window) | Every 4–5 days during growth; reduce in cooler months | Mildly toxic to pets |
| Yellow Giant Hyssop | Bright indirect light (just back from a sunny window) | Every 7–10 days during the growing season; minimal in winter | Pet-safe |
| Yellow Ginger Lily | Bright indirect light (just back from a sunny window) | Generously during the growing season; greatly reduced in winter dormancy | Mildly toxic to pets |
| Yellow Ginger Lily | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer; reduce to every 10-14 days in winter | Mildly toxic to pets |
| Yellow Glacier Lily | Medium indirect light (a couple of metres from a window) | Regular during spring growth; reduce sharply after dormancy | Mildly toxic to pets |
| Yellow Loosestrife | Medium indirect light (a couple of metres from a window) | Regularly, keeping soil consistently moist | Mildly toxic to pets |
| Yellow Monanthes | Bright indirect light (just back from a sunny window) | Sparingly; roughly every 2–3 weeks during active growth (autumn–spring), barely at all in summer | Mildly toxic to pets |
| Yellow Monkeyflower | Bright indirect light (just back from a sunny window) | Keep soil permanently wet; never allow to dry out | Pet-safe |
| Yellow Moth Orchid | Bright indirect light (just back from a sunny window) | When the bark is nearly dry, typically every 7-10 days | Pet-safe |
| Yellow Mountain Heath | Bright indirect light (just back from a sunny window) | Regular — keep consistently moist | Mildly toxic to pets |
| Yellow Pimpernel | Medium indirect light (a couple of metres from a window) | High; keep consistently moist | Mildly toxic to pets |
| Yellow Promenaea | Medium indirect light (a couple of metres from a window) | Water when the potting medium is nearly dry at the surface but still faintly moist below, roughly every 5-8 days in summer and every 10-14 days in cooler months | Pet-safe |
| Yellow Trillium | Medium indirect light (a couple of metres from a window) | Regular during spring growing season; reduced once foliage dies back in summer. | Mildly toxic to pets |
| Yellow Trout Lily | Medium indirect light (a couple of metres from a window) | Water regularly in spring; allow to dry naturally after dormancy sets in | Mildly toxic to pets |
| Yellow Water Trumpet | Medium indirect light (a couple of metres from a window) | Submerged aquatic plant — water changes of 20-30% weekly are recommended. | Toxic to pets |
| Yellow Wood Anemone | Medium indirect light (a couple of metres from a window) | Weekly during spring growth; dormant and dry in summer | Toxic to pets |
| Yellow Woodland Violet | Medium indirect light (a couple of metres from a window) | Weekly; maintain evenly moist soil throughout spring and summer | Mildly toxic to pets |
| Yellow-Bracted Nidularium | Medium indirect light (a couple of metres from a window) | Refill central cup weekly; substrate every 10–14 days | Pet-safe |
| Yellow-cup Pitcairnia | Bright indirect light (just back from a sunny window) | Keep evenly moist during active growth (spring–autumn); reduce to infrequent watering every 10–14 days in winter, allowing the top half of the substrate to dry. | Mildly toxic to pets |
| Yellow-Spike Peperomia | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer, every 3–4 weeks in winter | Pet-safe |
| Yellow-Twig Dogwood | Bright indirect light (just back from a sunny window) | Regularly; keep soil consistently moist | Pet-safe |
| Yellow-White Maxillaria | Bright indirect light (just back from a sunny window) | Every 2–3 days in growth, every 4–5 days in winter | Pet-safe |
| Yellowish Miltonia | Bright indirect light (just back from a sunny window) | Every 2–3 days in summer, every 4–5 days in winter | Pet-safe |
| Yesterday-Today-and-Tomorrow | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top of the soil starts to dry, roughly 1-2x per week in growth. | Toxic to pets |
| Yew Bonsai | Bright indirect light (just back from a sunny window) | When the top 2-3 cm is dry, typically every 2-4 days in summer and less in winter | Toxic to pets |
| Yokosuka Lady Fern | Medium indirect light (a couple of metres from a window) | Twice weekly during the growing season; reduce in winter | Mildly toxic to pets |
| Young's Weeping Birch | Bright indirect light (just back from a sunny window) | Weekly during establishment and dry spells; every 2 weeks once mature | Pet-safe |
| Yuletide Sasanqua Camellia | Bright indirect light (just back from a sunny window) | Every 5-7 days in summer; reduce in winter but do not let dry out | Pet-safe |
| Yunnan Dwarf Palm | Bright indirect light (just back from a sunny window) | Every 7–10 days in summer, monthly in winter | Pet-safe |
| Zahn's Guzmania | Bright indirect light (just back from a sunny window) | Refill cup every 7–10 days; flush monthly | Pet-safe |
| Zahn's Guzmania | Bright indirect light (just back from a sunny window) | Keep the central tank topped up; flush every 7-10 days; water soil only when the top 3 cm is dry | Pet-safe |
| Zamia Fern | Medium indirect light (a couple of metres from a window) | Every 1–2 weeks | Toxic to pets |
| Zamia loddigesii | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-12 days in growth | Toxic to pets |
| Zamia Pumila | Bright indirect light (just back from a sunny window) | When the top 4-5 cm of soil is dry, roughly every 10-14 days | Toxic to pets |
| Zamia Roezlii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Toxic to pets |
| Zantedeschia 'Black Star' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth | Toxic to pets |
| Zantedeschia 'Captain Safari' | Bright indirect light (just back from a sunny window) | Keep soil evenly moist in growth and bloom; keep dry over winter dormancy | Toxic to pets |
| Zantedeschia 'Captain Tendens' | Bright indirect light (just back from a sunny window) | Keep soil evenly moist in growth and bloom; keep dry during winter dormancy | Toxic to pets |
| Zantedeschia 'Captain Violetta' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth | Toxic to pets |
| Zantedeschia 'Crystal Blush' | Bright indirect light (just back from a sunny window) | Keep evenly moist in growth, watering when the top 2-3 cm is dry (often every 4-7 days) | Toxic to pets |
| Zantedeschia 'Edge of Night' | Bright indirect light (just back from a sunny window) | Keep evenly moist in growth, watering when the top 2-3 cm of soil dries; reduce sharply as foliage fades | Toxic to pets |
| Zantedeschia 'Flame' | Bright indirect light (just back from a sunny window) | Keep evenly moist in growth, watering when the top 2-3 cm of soil is dry; reduce as foliage dies back | Toxic to pets |
| Zantedeschia 'Hot Chocolate' | Bright indirect light (just back from a sunny window) | Keep evenly moist during growth, watering as the top 2-3 cm of soil dries; cut back as it goes dormant | Toxic to pets |
| Zantedeschia 'Mango' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth | Toxic to pets |
| Zantedeschia 'Picasso' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth | Toxic to pets |
| Zantedeschia 'Schwarzwalder' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth | Toxic to pets |
| Zantedeschia albomaculata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth | Toxic to pets |
| Zantedeschia elliottiana | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry during active growth, roughly every 5-7 days | Toxic to pets |
| Zantedeschia jucunda | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth | Toxic to pets |
| Zantedeschia pentlandii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth | Toxic to pets |
| Zanzibar Croton | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in growth | Toxic to pets |
| Zaragoza Ceratozamia | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; every 3–5 weeks in winter | Toxic to pets |
| Zebra Basket Vine | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of potting mix is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Zebra Plant | Bright indirect light (just back from a sunny window) | Keep evenly moist; water little and often, roughly when the top third of the mix dries | Pet-safe |
| Zebra Plant (Calathea Zebrina) | Bright indirect light (just back from a sunny window) | Roughly weekly; keep soil evenly moist, never soggy or bone-dry | Pet-safe |
| Zebra Plant Aphelandra | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil is dry, roughly every 5-7 days in the growing season | Pet-safe |
| Zebra Plant Calathea | Bright indirect light (just back from a sunny window) | Roughly weekly; when the top of the soil begins to dry | Pet-safe |
| Zebra Plant Dania | Bright indirect light (just back from a sunny window) | When the top 1-2 cm of soil begins to dry, often every 4-7 days | Mildly toxic to pets |
| Zebra Temple Bells | Medium indirect light (a couple of metres from a window) | Every 3–4 days in active growth; taper off in autumn; none in winter dormancy | Mildly toxic to pets |
| Zecher's Air Plant | Medium indirect light (a couple of metres from a window) | Soak 30 minutes twice weekly; mist 2-3 times per week between soaks | Pet-safe |
| Zigzag Clover | Medium indirect light (a couple of metres from a window) | Moderate; tolerates short dry spells once established | Pet-safe |
| Zigzag Goldenrod | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist; water weekly in dry spells | Mildly toxic to pets |
| Zigzag Iris | Medium indirect light (a couple of metres from a window) | Consistently moist to wet | Mildly toxic to pets |
| Zomicarpella amazonica | Medium indirect light (a couple of metres from a window) | Keep evenly moist in growth, surface just drying; reduce while resting | Mildly toxic to pets |
| Zuiko Nishiki Lady Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Pet-safe |
| Zulu Spurflower | Medium indirect light (a couple of metres from a window) | Moderate — water twice weekly in containers; less frequently in ground | Mildly toxic to pets |
| Zygopetalum 'Artur Elle' | Bright indirect light (just back from a sunny window) | Keep evenly moist in growth, every 5-7 days, easing back as pseudobulbs mature | Pet-safe |
| Zygopetalum 'Blue Eyes' | Bright indirect light (just back from a sunny window) | Keep evenly moist, watering when the surface starts to dry, roughly every 4-6 days | Pet-safe |
| Zygopetalum 'Redvale' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is approaching dry, roughly every 5-7 days | Pet-safe |
| Zygopetalum 'Titanic' | Bright indirect light (just back from a sunny window) | Keep evenly moist during growth, every 5-7 days, reducing as pseudobulbs mature | Pet-safe |
| Zygopetalum intermedium | Bright indirect light (just back from a sunny window) | Keep evenly moist during growth, every 5-7 days, reducing once pseudobulbs mature | Pet-safe |
| Zygopetalum mackaii | Bright indirect light (just back from a sunny window) | Keep evenly moist in growth, every 5-7 days, easing off after the pseudobulbs mature | Pet-safe |
| Zygopetalum Orchid | Bright indirect light (just back from a sunny window) | Roughly every 3-7 days; more often in warm, active growth, less in winter | Mildly toxic to pets |
| ZZ Plant Lucky | Medium indirect light (a couple of metres from a window) | When the top half of the soil is dry, roughly every 2-3 weeks | Toxic to pets |
| ZZ Plant Raven | Medium indirect light (a couple of metres from a window) | When the top half of the soil is dry, roughly every 2-3 weeks | Toxic to pets |
| ZZ Plant Variegata | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 2-3 weeks | Toxic to pets |
| ZZ Plant Zenzi | Medium indirect light (a couple of metres from a window) | When the top half of the soil is dry, roughly every 2-3 weeks | Toxic to pets |