Best plants
A steamy bathroom or kitchen is wasted on a cactus. These species genuinely want the higher humidity that most homes only have in those rooms — or near a humidifier.
How this list is built: houseplants whose documented ideal humidity is 50% or higher— filtered from Growli's structured plant-care library, not hand-picked, so it stays consistent and checkable.
| Plant | Light | Water | Pets |
|---|---|---|---|
| Abiu | Direct sun (at least 4-6 hours) | When the top few centimetres of soil dry out, around every 4-7 days in active growth | Mildly toxic to pets |
| 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 |
| Acerola | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil is dry, roughly every 4-7 days in growth | Mildly toxic to pets |
| 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 |
| 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 blanchetiana | Direct sun (at least 4-6 hours) | Keep the central cup filled; refresh weekly and water mix when top few cm are dry | 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 |
| 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 |
| Afghan Iris | Direct sun (at least 4-6 hours) | Moderate in late winter to late spring; bone dry from midsummer to early autumn | 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 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 '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 |
| Afro Hard Rush | Direct sun (at least 4-6 hours) | Keep soil consistently moist; water 1–2 times per week in warm weather | Pet-safe |
| 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 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 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 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 nitidum | Low light (north window or shaded room) | When the top 3-4 cm of soil is dry, roughly every 7-12 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 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 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 Silver Queen | Low light (north window or shaded room) | When the top 3-4 cm of soil is dry, roughly every 7-10 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 |
| 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 |
| 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 heather | Direct sun (at least 4-6 hours) | Consistently moist throughout the growing season; reduce slightly in winter dormancy | 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 |
| Alice's Sundew | Direct sun (at least 4-6 hours) | Keep soil constantly damp; tray topped up year-round, easing off slightly in winter | Mildly toxic to pets |
| 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 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 |
| Alphonso Mango | Direct sun (at least 4-6 hours) | Keep evenly moist in growth; water when the top 3-5 cm of soil dries, then withhold before flowering | Mildly toxic to pets |
| Alpine bearberry | Direct sun (at least 4-6 hours) | Moderate; keep soil moist but well-drained; water regularly during dry periods | Pet-safe |
| 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 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 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 |
| 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 |
| 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 |
| Ambarella | Direct sun (at least 4-6 hours) | Every 7–10 days; drought-tolerant when established | Pet-safe |
| 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 Lady Fern | Low light (north window or shaded room) | Every 2–3 days during active growth; less frequently in winter | Pet-safe |
| 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 |
| 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 |
| Amphibious Bistort | Direct sun (at least 4-6 hours) | Permanent wet soil or shallow water — no irrigation needed once established | Mildly 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 |
| 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 |
| 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's Trumpet | Direct sun (at least 4-6 hours) | Every 1-3 days in peak summer growth; far less when dormant or overwintering | Toxic to pets |
| Angel's Trumpet Hybrid | Direct sun (at least 4-6 hours) | Every 2–4 days in summer (keep consistently moist) | 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 |
| Angraecum eburneum | Direct sun (at least 4-6 hours) | When the substrate is almost completely dry, roughly every 5-7 days year-round | Mildly toxic to pets |
| 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 |
| Annual Rainbow Plant | Direct sun (at least 4-6 hours) | Keep medium wet at all times; tray method, water never allowed to dry out | Pet-safe |
| Anoectochilus roxburghii | Low light (north window or shaded room) | Keep evenly moist, watering roughly every 3-5 days as the surface begins to dry | Pet-safe |
| 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 |
| Anubias afzelii | Low light (north window or shaded room) | Submerged full-time; change 20-30% of tank water weekly | Mildly toxic to pets |
| Anubias barteri var. barteri | Low light (north window or shaded room) | Submerged full-time; change 20-30% of tank water weekly | Mildly toxic to pets |
| Anubias barteri var. nana | Low light (north window or shaded room) | Submerged full-time; change 20-30% of tank water weekly | Mildly toxic to pets |
| Anubias barteri var. nana 'Petite' | Low light (north window or shaded room) | Submerged full-time; change 20-30% of tank water weekly | Mildly toxic to pets |
| Anubias congensis | Low light (north window or shaded room) | Submerged full-time; change 20-30% of tank water weekly | Mildly toxic to pets |
| Anubias gigantea | Low light (north window or shaded room) | Submerged or emersed; change 20-30% of tank water weekly | Mildly toxic to pets |
| Anubias hastifolia | Low light (north window or shaded room) | Submerged full-time; change 20-30% of tank water weekly | Mildly 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 |
| 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 |
| Aptos Blue Redwood | Direct sun (at least 4-6 hours) | Weekly when young; every 1–2 weeks when established | Pet-safe |
| Arabian Jasmine | Direct sun (at least 4-6 hours) | Keep evenly moist in growth; water when the top 2-3 cm of soil dries, often every 3-5 days in warmth | Pet-safe |
| 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 |
| Araca-boi Sapote | Direct sun (at least 4-6 hours) | Every 4–7 days; keep soil consistently moist | 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 |
| 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 |
| 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 |
| 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 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 |
| Ashanti Blood | Direct sun (at least 4-6 hours) | Every 5–7 days during growing season; reduce in dormancy | 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 |
| Assam Fan Palm | Direct sun (at least 4-6 hours) | Weekly in growing season, every 2–3 weeks in winter | 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 |
| Ataulfo Mango | Direct sun (at least 4-6 hours) | Water when the top 3-5 cm of soil dries in growth; withhold before flowering | Mildly toxic to pets |
| Atemoya | Direct sun (at least 4-6 hours) | Water when the top 3-5 cm dries; keep steady during fruiting | 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 |
| Athyrium filix-femina 'Frizelliae' | Low light (north window or shaded room) | Keep evenly moist; water every 4-6 days, more in hot weather | Mildly toxic to pets |
| Athyrium filix-femina 'Minutissimum' | Low light (north window or shaded room) | Keep consistently moist; water every 4-6 days, more in heat | Mildly toxic to pets |
| Athyrium niponicum 'Red Beauty' | Low light (north window or shaded room) | Keep evenly moist; water every 4-6 days, more often in heat | Mildly toxic to pets |
| Athyrium niponicum 'Ursula's Red' | Low light (north window or shaded room) | Keep evenly moist; water every 4-6 days, increasing in hot weather | Mildly toxic to pets |
| Athyrium otophorum | Low light (north window or shaded room) | Keep evenly moist; water every 4-6 days, more in heat | Mildly toxic to pets |
| Atlantic White Cedar | Direct sun (at least 4-6 hours) | Constant moisture; tolerates standing water seasonally | Mildly 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 |
| Australian Bangalow Palm | Direct sun (at least 4-6 hours) | Weekly during establishment; every 10–14 days once established in-ground | Pet-safe |
| 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 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 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 |
| 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 |
| 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 |
| 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 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's Tears | Bright indirect light (just back from a sunny window) | Every 2-4 days; keep soil consistently moist | 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 |
| Bacuri | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil is dry, roughly every 5-8 days in growth | 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 |
| Balisier Heliconia | Bright indirect light (just back from a sunny window) | Every 5–7 days; soil should remain evenly moist | Mildly toxic to pets |
| Balsam Fir | Direct sun (at least 4-6 hours) | Weekly during establishment; naturally rainfall-sustained thereafter | Pet-safe |
| 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 |
| 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 Passion Fruit | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, roughly every 3-6 days in active growth | Mildly 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 |
| Barbados Maidenhair Fern | Bright indirect light (just back from a sunny window) | Every 3–5 days; keep consistently moist | 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 |
| 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 |
| 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 |
| Basket Bromeliad | Medium indirect light (a couple of metres from a window) | Tank every 5–7 days; soil every 10–14 days | Pet-safe |
| 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 |
| Beach Cabbage | Direct sun (at least 4-6 hours) | Every 7–14 days; drought-tolerant once established | Mildly toxic to pets |
| Beaked Homalomena | Low light (north window or shaded room) | Every 7–14 days; reduce in winter | Toxic to pets |
| Bear Tupelo | Bright indirect light (just back from a sunny window) | Regularly; keep consistently moist | 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 |
| 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 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 |
| 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 '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 '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 '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 '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 '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 '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 '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 '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 '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 '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 '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 '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 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 '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 '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 '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 '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 '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 '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 '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 × 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 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 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 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 pavonina | Low light (north window or shaded room) | Keep soil consistently lightly moist, never dry and never soggy | 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 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 |
| Bent Alligator Flag | Direct sun (at least 4-6 hours) | Permanent standing water or saturated soil; up to 30 cm over roots | Mildly 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 |
| 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 |
| 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 |
| 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 |
| Bignay | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil is dry, about every 4-7 days in growth | Mildly toxic to pets |
| Bilimbi | Direct sun (at least 4-6 hours) | Every 3-7 days, keeping soil consistently moist; bilimbi dislikes drying out | Toxic to pets |
| 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 of paradise | Direct sun (at least 4-6 hours) | When the top 3 cm of soil is dry, every 7-10 days | 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 | Low light (north window or shaded room) | Refill central cup weekly; substrate 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 |
| Bird's-nest Orchid | Low light (north window or shaded room) | Not applicable for cultivation; in nature, reliant on consistently moist woodland humus | Mildly toxic to pets |
| Birdcatcher Parlour Palm | Low light (north window or shaded room) | Every 10–14 days in summer, every 2–3 weeks in winter | Pet-safe |
| Biriba | Direct sun (at least 4-6 hours) | 2–3 times per week; do not allow soil to dry out | 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 |
| Black Ash | Direct sun (at least 4-6 hours) | High; requires consistently moist to wet soil | 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 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 Olive Bonsai | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, roughly every 3-6 days | 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 Sapote | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 5-9 days in growth | 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 Spruce | Direct sun (at least 4-6 hours) | Consistent moisture; tolerates waterlogging — does not dry out between waterings | Pet-safe |
| 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-stemmed Spleenwort | Medium indirect light (a couple of metres from a window) | When the top centimetre of substrate feels dry | Pet-safe |
| 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) | 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 |
| Blister plant | Low light (north window or shaded room) | Every 3–5 days; never allow to dry out | Pet-safe |
| Blonde Ambition Rush | Bright indirect light (just back from a sunny window) | Keep soil consistently moist to wet at all times | Pet-safe |
| Blood Banana | Direct sun (at least 4-6 hours) | Roughly weekly in active growth; every 10-14 days in winter | 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 |
| 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 China Fir | Direct sun (at least 4-6 hours) | Regular when young; moderate once established | Mildly toxic to pets |
| Blue Cohosh | Low light (north window or shaded room) | Every 5–7 days; maintain consistently moist soil | Toxic to pets |
| Blue dawn flower | Direct sun (at least 4-6 hours) | Once or twice weekly during dry periods; established plants are relatively drought-tolerant | 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 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 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 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 Vanda | Direct sun (at least 4-6 hours) | Daily in warm months when roots silver over; every 2-3 days in cool, dim weather | 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 |
| 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 |
| 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 |
| 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 Sage | Direct sun (at least 4-6 hours) | Moderate to high — keep soil consistently moist | Mildly 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 |
| Bokhara Iris | Direct sun (at least 4-6 hours) | Moderate in spring; completely dry from midsummer to autumn | 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 |
| 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 |
| Boulevard Cypress | Direct sun (at least 4-6 hours) | Every 4-7 days while establishing, then when the top few cm of soil dry | Mildly toxic to pets |
| Bove's Jerusalem Sage | Direct sun (at least 4-6 hours) | Low — once every 2–3 weeks during active growth; essentially none from late autumn to early spring | Mildly toxic to pets |
| 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 |
| Bowles Golden Sedge | Direct sun (at least 4-6 hours) | Keep wet to constantly moist; never allow to dry out | Mildly toxic to pets |
| 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 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 |
| 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 cucullata | Direct sun (at least 4-6 hours) | Water thoroughly, then let it dry out almost completely before watering again | Mildly toxic to pets |
| 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 |
| Brazilian Plume | Bright indirect light (just back from a sunny window) | Regularly — keep soil consistently moist but never waterlogged | 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 |
| Breadfruit | Direct sun (at least 4-6 hours) | Keep soil consistently moist; water deeply 2-3 times a week in active growth | Mildly toxic to pets |
| Breadnut | Direct sun (at least 4-6 hours) | Water young trees 2–3 times per week; established trees are moderately drought tolerant but benefit from weekly deep irrigation in dry seasons. | Pet-safe |
| Brewster Lychee | Direct sun (at least 4-6 hours) | 2–3 times per week in active growth; withhold irrigation for 4–6 weeks before expected bloom | 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 |
| Brilliant Hibiscus | Direct sun (at least 4-6 hours) | Regularly during growth; reduce in winter | 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 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 Anubias | Low light (north window or shaded room) | Aquatic or emersed; submersed specimens require stable aquarium water; emersed plants need consistently moist conditions | Mildly toxic to pets |
| 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-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 |
| 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 |
| 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 |
| Brush Cherry | Bright indirect light (just back from a sunny window) | Weekly when young; every 10–14 days once established | Pet-safe |
| Bucephalandra Black Pearl | Low light (north window or shaded room) | Kept permanently wet or submerged; mist daily if emersed | Toxic to pets |
| 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 Catherineae | Low light (north window or shaded room) | Keep the rhizome and roots constantly moist; mist emersed plants daily or run a sealed terrarium | Mildly 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 Motleyana | Low light (north window or shaded room) | Keep roots and rhizome continuously moist; mist daily when emersed or grow submerged | Mildly toxic to pets |
| Bucephalandra Sekadau | Low light (north window or shaded room) | Kept constantly wet or submerged; mist daily if emersed | 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 |
| Bucephalandra Wavy Green | Low light (north window or shaded room) | Kept constantly wet or submerged; mist daily if grown emersed | Toxic to pets |
| 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 |
| Buddha's Belly Bamboo | Direct sun (at least 4-6 hours) | 2-3 times per week in warm seasons; reduce in winter | 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 |
| 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 |
| Burmese Grape | Direct sun (at least 4-6 hours) | Regular watering; 2–3 times per week; do not let soil dry out completely | Mildly toxic to pets |
| Bush Allamanda | Direct sun (at least 4-6 hours) | Every 5–7 days in the growing season; reduce to every 10–14 days in winter | Toxic to pets |
| Bush Hoya | Bright indirect light (just back from a sunny window) | Roughly weekly in summer; every 10-14 days in winter | Pet-safe |
| Buttonwood Bonsai | Direct sun (at least 4-6 hours) | When the top of the soil starts to dry, often daily in heat | Mildly toxic to pets |
| Byfield Fern Cycad | Medium indirect light (a couple of metres from a window) | Every 1–2 weeks | Toxic to pets |
| Cabada Palm | Direct sun (at least 4-6 hours) | Every 3–5 days when young; drought-tolerant once established | 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 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 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 Shield Fern | Medium indirect light (a couple of metres from a window) | Every 5–7 days in growing season; reduce in winter | Pet-safe |
| 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 |
| Caltha palustris | Direct sun (at least 4-6 hours) | Keep wet at all times; saturated soil or shallow water | Toxic to pets |
| Caltha palustris 'Flore Pleno' | Direct sun (at least 4-6 hours) | Keep wet at all times; saturated soil or shallow water | Toxic to pets |
| 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 |
| Cambuci | Direct sun (at least 4-6 hours) | Weekly; more frequent during fruit development | Mildly toxic to pets |
| 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 |
| 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 |
| Camu Camu | Bright indirect light (just back from a sunny window) | Every 2–4 days; keep consistently moist to wet | Pet-safe |
| Canada Mayflower | Low light (north window or shaded room) | 2–3 times per week during the growing season; minimal in dormancy | 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 Wild Ginger | Low light (north window or shaded room) | Water weekly, or when the top 2–3 cm of soil feels dry | Mildly toxic to pets |
| Canadian Yew | Low light (north window or shaded room) | Weekly during establishment; every 1–2 weeks once established | Toxic to pets |
| 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 |
| 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 |
| Canistel | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 5-9 days in 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 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 |
| Capped Catasetum | Direct sun (at least 4-6 hours) | Abundant daily to every-other-day during growth; dry rest in winter | Pet-safe |
| 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 |
| 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 |
| Carex pendula | Medium indirect light (a couple of metres from a window) | Keep soil moist; water in dry spells | Mildly toxic to pets |
| Carex riparia 'Variegata' | Direct sun (at least 4-6 hours) | Keep wet to shallowly submerged at all times | Mildly toxic to pets |
| Caribbean Royal Palm | Direct sun (at least 4-6 hours) | Twice weekly when young; established trees weekly or as needed | Pet-safe |
| 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 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 |
| Cas Guava | Direct sun (at least 4-6 hours) | Water deeply 2–3 times per week in the growing season; reduce to once weekly in winter. | Pet-safe |
| Case's Ixora | Direct sun (at least 4-6 hours) | Every 2-3 days during warm months, reduce to weekly in cooler weather | Mildly 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 |
| 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 |
| Catawba rhododendron | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 7–14 days once established | 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 |
| 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 Lily | Bright indirect light (just back from a sunny window) | Moderate — keep soil consistently moist but not waterlogged | Toxic to pets |
| Cavendish Banana | Direct sun (at least 4-6 hours) | Keep soil consistently moist; water when the top 2-3 cm dries, often every 2-4 days in active growth | 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 Bay Cherry | Direct sun (at least 4-6 hours) | Water established plants once or twice per week; newly planted specimens require daily watering for the first 4–6 weeks. | 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 |
| 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 |
| 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 |
| 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 Date Palm | Direct sun (at least 4-6 hours) | Weekly during active growth; every 2–3 weeks in cooler or drier periods | 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 |
| Chalice Vine | Direct sun (at least 4-6 hours) | Weekly during active growth; reduce in winter | Toxic to pets |
| 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 |
| Changing Tibouchina | Direct sun (at least 4-6 hours) | Water regularly to maintain evenly moist soil during the growing season; reduce slightly in winter. | 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 |
| Chempedak | Direct sun (at least 4-6 hours) | Keep evenly moist; water deeply 2-3 times weekly in warm growth | Mildly toxic to pets |
| Cherapu | Direct sun (at least 4-6 hours) | Daily in dry periods; every 2–3 days with regular rainfall | Mildly toxic to pets |
| Cherimoya | Direct sun (at least 4-6 hours) | Water when the top 3-5 cm dries during growth; reduce in dormancy | Mildly toxic to pets |
| Cherry of the Rio Grande | Direct sun (at least 4-6 hours) | Water 2–3 times per week during warm months; once weekly in cooler, dormant periods. | Pet-safe |
| Cherry of the Río Grande | Direct sun (at least 4-6 hours) | Water thoroughly 2–3 times per week in summer; reduce to once every 7–10 days in winter. | 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 |
| 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 |
| China Fir | Direct sun (at least 4-6 hours) | Keep soil moist; water regularly while young, then deeply during dry spells once established | Mildly toxic to pets |
| 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 Douglas Fir | Direct sun (at least 4-6 hours) | Weekly when young; every 2 weeks once established | Pet-safe |
| 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 Gentian | Direct sun (at least 4-6 hours) | Regular, keeping soil evenly moist throughout the growing season; reduce in winter | Mildly toxic to pets |
| Chinese Honeysuckle | Direct sun (at least 4-6 hours) | Every 3–5 days during the growing season; reduce in cooler months | Mildly toxic to pets |
| 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 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 Swamp Cypress | Direct sun (at least 4-6 hours) | Keep consistently moist to wet; tolerates prolonged inundation | Mildly toxic to pets |
| Chinese Timber Bamboo | Direct sun (at least 4-6 hours) | 2–3 times per week in the shooting season (spring); weekly otherwise | Pet-safe |
| Chinese Wild Ginger | Low light (north window or shaded room) | Water every 5–7 days, or when the top 2 cm of soil begins to dry | Mildly 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 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 |
| 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 |
| 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 Palm | Direct sun (at least 4-6 hours) | Every 5–7 days; allow top 2–3 cm of soil to dry between waterings | Pet-safe |
| Christmas Palm | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil is dry, roughly every 5-7 days in warmth | Pet-safe |
| Cinnamon Fern | Medium indirect light (a couple of metres from a window) | 2-3 times per week; keep consistently moist | Pet-safe |
| Cinnamon Fern | Low light (north window or shaded room) | Keep consistently moist to wet; water whenever the surface begins to dry, often every 3-5 days | Mildly toxic to pets |
| 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 |
| 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 |
| 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 |
| Cleveland Sage | Direct sun (at least 4-6 hours) | Very infrequent after establishment — once monthly or less in summer | Pet-safe |
| 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 |
| 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 |
| 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 |
| Clubmoss cassiope | Bright indirect light (just back from a sunny window) | Regularly; soil should remain consistently moist throughout the growing season | 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 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 |
| 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 |
| Coast Rock Cress | Direct sun (at least 4-6 hours) | Weekly in the growing season; reduce to monthly or less when summer-dormant | Pet-safe |
| 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 |
| 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 |
| Cobra Lily | Low light (north window or shaded room) | Keep evenly moist through the spring-to-summer growing season, watering when the surface begins to dry; reduce as the plant dies back to dormancy. | Toxic to pets |
| Cobra Lily | Direct sun (at least 4-6 hours) | Keep constantly damp to wet, year-round | 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 Palm | Direct sun (at least 4-6 hours) | Keep consistently moist; water every 3-5 days in heat, never letting it dry out fully | 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 |
| 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 |
| 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 'Coffee Cups' | Direct sun (at least 4-6 hours) | Keep constantly 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 Black Coral | Direct sun (at least 4-6 hours) | Keep soil constantly moist; water every 2-4 days, daily in peak summer | 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 Burgundy Stem | Direct sun (at least 4-6 hours) | Keep constantly moist to wet; water whenever the surface starts to dry | Toxic to pets |
| Colocasia Colocasia Gigantea Thailand Giant | Direct sun (at least 4-6 hours) | Keep constantly moist to wet; water daily in heat, or stand in shallow standing water | Toxic to pets |
| Colocasia Crown of Tonga | Direct sun (at least 4-6 hours) | Keep constantly moist to boggy; check every 1-3 days in heat, never letting it dry out | 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 Illustris Black Runner | Direct sun (at least 4-6 hours) | Keep constantly moist; water daily in heat, or stand in 2-5 cm of standing water | 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 |
| Colocasia Tea Cup | Direct sun (at least 4-6 hours) | Keep soil constantly moist; water every 2-4 days, daily in summer | 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 Angel's Trumpet | Direct sun (at least 4-6 hours) | Every 2–4 days in summer (soil should be consistently moist but not waterlogged) | Toxic to pets |
| Common Bamboo | Direct sun (at least 4-6 hours) | Deeply 2-3 times per week; daily in hot or dry conditions | Pet-safe |
| Common blue violet | Medium indirect light (a couple of metres from a window) | Every 5–10 days; tolerates wet soil | Pet-safe |
| 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 Club-rush | Direct sun (at least 4-6 hours) | Permanently aquatic; plant at 30–150 cm (12–60 in) water depth | Pet-safe |
| 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 Lime | Direct sun (at least 4-6 hours) | Regular in first 2–3 years; occasional once established | Pet-safe |
| Common Maidenhair Fern | Medium indirect light (a couple of metres from a window) | Every 2–4 days; keep soil evenly moist | Pet-safe |
| 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 Rush | Direct sun (at least 4-6 hours) | Permanently wet or standing water to 15 cm (6 in) deep | Pet-safe |
| 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 Spike-rush | Direct sun (at least 4-6 hours) | Permanently aquatic to waterlogged; plant at 0–30 cm (0–12 in) water depth | Pet-safe |
| Common Spotted Orchid | Bright indirect light (just back from a sunny window) | Relies on natural rainfall | Mildly toxic to pets |
| Common tobacco | Direct sun (at least 4-6 hours) | Every 3–5 days; maintain consistently moist soil | 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 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 |
| 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 |
| Confederate Rose | Direct sun (at least 4-6 hours) | Regularly during growth; deeply once or twice per week | Mildly toxic to pets |
| Confetti Polka Dot Plant | Bright indirect light (just back from a sunny window) | Every 5–7 days in growth; reduce 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 |
| 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 |
| 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 Iris | Direct sun (at least 4-6 hours) | Continuously moist to waterlogged | Mildly toxic to pets |
| 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 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 |
| 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 |
| 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 |
| Cornish heath | Direct sun (at least 4-6 hours) | Weekly while establishing; every 2–3 weeks once settled | Pet-safe |
| 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 |
| 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 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 |
| Cramer's Amazon celosia | Direct sun (at least 4-6 hours) | Every 3–5 days | 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 |
| 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 Elatostema | Low light (north window or shaded room) | Water freely in active growth (spring–autumn); moderately 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 Mazus | Bright indirect light (just back from a sunny window) | Every 3–5 days; prefers consistently moist soil | Mildly toxic to pets |
| Creeping Sage | Bright indirect light (just back from a sunny window) | Weekly during the growing season | Pet-safe |
| 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 |
| 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 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 Catasetum | Direct sun (at least 4-6 hours) | Daily to every-other-day during growth; stop during dormancy | Pet-safe |
| 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 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 | 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 |
| 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 |
| Crippsii Hinoki Cypress | Direct sun (at least 4-6 hours) | Every 5-7 days while establishing, then when the top few cm of soil dry | Mildly 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) | 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-leaved heath | Direct sun (at least 4-6 hours) | Frequently — keep soil consistently moist to wet | Pet-safe |
| 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 |
| 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 nurii | Low light (north window or shaded room) | Submerged: keep continuously immersed; 25-30% weekly water changes. Emersed: keep substrate constantly moist, never drying out | Toxic to pets |
| Cryptocoryne wendtii 'Green' | Low light (north window or shaded room) | Submerged full-time; change 20-30% of tank water 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 |
| 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 |
| Cuban Royal Palm | Direct sun (at least 4-6 hours) | Every 5–7 days when young; established trees weekly or rely on rainfall | 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 |
| Cunninghamia 'Glauca' | Direct sun (at least 4-6 hours) | Keep soil moist; water regularly while young, then deeply in dry spells once established | Mildly toxic to pets |
| Cup of gold vine | Direct sun (at least 4-6 hours) | Water to keep soil evenly moist during the growing season; reduce to occasional deep watering in winter | Toxic to pets |
| Cupani sweet pea | Direct sun (at least 4-6 hours) | Every 3–5 days in warm growing conditions; adjust for rainfall | Toxic to pets |
| 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 |
| 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 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-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 |
| 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 |
| Custard Apple | Direct sun (at least 4-6 hours) | Twice weekly when establishing; weekly once mature, reducing in dry dormancy | Mildly toxic to pets |
| Custard Biriba | Direct sun (at least 4-6 hours) | 2–3 times per week in growing season; reduce in cooler months | 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 coneflower | Direct sun (at least 4-6 hours) | Twice weekly during establishment; weekly or more in dry spells once established | Pet-safe |
| 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 |
| 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-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 |
| 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 |
| 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 papyrus | Direct sun (at least 4-6 hours) | Keep constantly wet; stand in water or water daily so the soil is never dry | Mildly toxic to pets |
| 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 |
| Dalit Durian | Direct sun (at least 4-6 hours) | Daily to every other day in dry spells; less frequent during rainy seasons | 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 |
| Daphne laureola | Low light (north window or shaded room) | Weekly while establishing; rarely once established | 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 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 |
| Darley Dale heath | Direct sun (at least 4-6 hours) | Weekly while establishing; every 2–3 weeks once established | 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 |
| 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 |
| 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 |
| 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-Leaf Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–14 days in summer, much less in winter | Pet-safe |
| Deparia acrostichoides | Low light (north window or shaded room) | Keep evenly moist; water when the top 2 cm starts to dry, roughly every 4-7 days in growth | Pet-safe |
| 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 |
| 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 |
| 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 |
| Diane's Gold Brunnera | Low light (north window or shaded room) | Keep soil evenly moist; water when the top 2-3 cm dries, roughly every 4-6 days in heat | Mildly toxic to pets |
| Dickie's Bladder Fern | Low light (north window or shaded room) | 2-3 times per week in the growing season; reduce in winter dormancy | Pet-safe |
| 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 |
| Dipladenia | Direct sun (at least 4-6 hours) | Once or twice weekly in summer; every 10–14 days in winter | Mildly 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 |
| 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 |
| 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 |
| Dogwood | Medium indirect light (a couple of metres from a window) | Low to moderate — water during establishment; drought-tolerant thereafter | Mildly toxic to pets |
| Dollbaby miniature gloxinia | Bright indirect light (just back from a sunny window) | Every 5–8 days; keep evenly moist but never waterlogged | Pet-safe |
| Doña Aurora | Direct sun (at least 4-6 hours) | Every 5–7 days; allow top 2–3 cm to dry slightly | Mildly toxic to pets |
| 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 Angel's Trumpet | Direct sun (at least 4-6 hours) | Every 2–4 days in summer (keep soil consistently moist) | Toxic to pets |
| 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 Pinwheel Flower | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; reduce in winter | 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 |
| Dracaena Camerooniana | Low light (north window or shaded room) | When the top 2-3 cm of soil is dry, every 5-7 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 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 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 |
| 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 |
| Dracula bella | Low light (north window or shaded room) | Keep continuously moist, watering every 2-3 days so the medium never dries fully | Mildly toxic to pets |
| Dracula simia | Low light (north window or shaded room) | Keep continuously moist, watering every 2-3 days so the medium never dries out | Mildly toxic to pets |
| Dracula sodiroi | Low light (north window or shaded room) | Keep evenly moist at all times, watering about every 2-4 days; the medium should never fully dry | Mildly toxic to pets |
| Dracula vampira | Low light (north window or shaded room) | Keep the medium evenly moist at all times; water roughly every 2-4 days, never allowing it to dry out | Mildly 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 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 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 |
| Drosera anglica | Direct sun (at least 4-6 hours) | Keep constantly saturated; stand in 1-3 cm of pure water through the growing season | Pet-safe |
| Drosera burmanni | Direct sun (at least 4-6 hours) | Keep media constantly wet; stand in 1-2 cm of pure water at all times in growth | Pet-safe |
| Drosera intermedia | Direct sun (at least 4-6 hours) | Keep permanently saturated; stand in 1-3 cm of pure water at all times during growth | Pet-safe |
| Drosera schizandra | Low light (north window or shaded room) | Keep media permanently moist but not waterlogged; mist or top-water with pure water frequently | 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 affinis 'Cristata' | Low light (north window or shaded room) | Keep soil consistently moist; water deeply during dry spells, roughly weekly in summer | Pet-safe |
| 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 championii | Low light (north window or shaded room) | Keep evenly moist; water deeply in dry spells, roughly weekly in summer heat | Pet-safe |
| 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 filix-mas 'Linearis Polydactyla' | Low light (north window or shaded room) | Keep soil consistently moist; water during dry spells so it never dries out | 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 |
| Dryopteris tokyoensis | Low light (north window or shaded room) | Keep constantly moist to wet; never allow to dry out, watering as often as needed in summer | Pet-safe |
| Dryopteris uniformis | Low light (north window or shaded room) | Keep evenly moist; water deeply during dry spells, roughly weekly in summer | 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 |
| Durian | Direct sun (at least 4-6 hours) | Frequent deep watering; keep soil moist with a brief drier spell to trigger flowering | Mildly toxic to pets |
| Dusty zenobia | Bright indirect light (just back from a sunny window) | Consistently moist — water deeply and regularly, especially in summer heat | Toxic to pets |
| Dwarf Anubias | Low light (north window or shaded room) | Permanently aquatic or emersed in high-humidity environments; stable water conditions maintained with regular partial water changes | Mildly toxic to pets |
| 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 Birch | Direct sun (at least 4-6 hours) | Regular moisture; do not allow to dry out, especially in summer | Pet-safe |
| 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 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 Cavendish Banana | Direct sun (at least 4-6 hours) | Keep evenly moist; water when the top 2-3 cm of soil is dry, often every 2-4 days in active growth | Pet-safe |
| Dwarf Chirita | Bright indirect light (just back from a sunny window) | Every 7–10 days | Pet-safe |
| Dwarf Coast Redwood | Direct sun (at least 4-6 hours) | Every 1–2 weeks; more in summer heat | Pet-safe |
| 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 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 Horsetail | Medium indirect light (a couple of metres from a window) | Consistently wet; stand pot in water tray | Mildly toxic to pets |
| Dwarf Jamaican Heliconia | Direct sun (at least 4-6 hours) | Every 2–3 days in growth, weekly in winter | Mildly toxic to pets |
| Dwarf Kacip Fatimah | Low light (north window or shaded room) | Water when the top 1 cm of medium is drying; every 4–6 days in warm conditions, less frequently in cooler or lower-light conditions | Mildly toxic to pets |
| 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 Papyrus | Direct sun (at least 4-6 hours) | Keep roots permanently wet or in standing water 0–10 cm (0–4 in) deep | Pet-safe |
| 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 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 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 Sweet Flag | Medium indirect light (a couple of metres from a window) | Permanently moist to wet; tolerate shallow submersion | Pet-safe |
| Dwarf Trillium | Low light (north window or shaded room) | Keep soil consistently moist from spring emergence until dormancy; minimal watering once dormant | Mildly 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 |
| Dyer's Air Plant | Medium indirect light (a couple of metres from a window) | Daily misting plus weekly soak | 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 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 Himalayan Fir | Direct sun (at least 4-6 hours) | Regularly during establishment; drought-tolerant once mature | Pet-safe |
| 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 Heliconia | Direct sun (at least 4-6 hours) | 2–3 times per week in summer, weekly in winter | Mildly toxic to pets |
| 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 Hemlock | Medium indirect light (a couple of metres from a window) | Weekly during establishment; regular moisture required long-term | Pet-safe |
| Eastern Skunk Cabbage | Low light (north window or shaded room) | Continuously waterlogged; tolerates standing water | Toxic to pets |
| Echidna Orchid | Medium indirect light (a couple of metres from a window) | Daily misting if mounted; every 1–2 days if potted | Pet-safe |
| Ecuador Angel's Trumpet | Direct sun (at least 4-6 hours) | Every 2–4 days in summer (consistent moisture essential) | 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 |
| Egyptian Star Flower | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry | Mildly toxic to pets |
| 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 Peacock Ginger | Medium indirect light (a couple of metres from a window) | Weekly during growing season; cease in winter dormancy | 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 |
| 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 |
| 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 |
| 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 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 |
| 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 |
| Encephalartos transvenosus | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly weekly to fortnightly in summer | 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 |
| 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 |
| Engelmann Spruce | Direct sun (at least 4-6 hours) | Regular — keep soil consistently moist, especially in the first 3 years after planting | Pet-safe |
| Entire-leaved Primrose | Direct sun (at least 4-6 hours) | Every 7–10 days in spring; minimal in summer and winter | Mildly 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 ibaguense | Direct sun (at least 4-6 hours) | When the top of the medium feels nearly dry, roughly every 4-6 days in growth | 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 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 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 |
| Equisetum hyemale | Direct sun (at least 4-6 hours) | Keep constantly wet; never let the rootzone dry out | Mildly toxic to pets |
| Equisetum japonicum | Direct sun (at least 4-6 hours) | Keep permanently wet or in shallow standing water | Mildly 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 |
| Erman's Birch | Direct sun (at least 4-6 hours) | Regular watering for first 2–3 years; occasional once established | Pet-safe |
| 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 |
| 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 |
| European Ash | Direct sun (at least 4-6 hours) | Moderate; deep watering during drought in first 3 years | Pet-safe |
| 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 Wild Ginger | Low light (north window or shaded room) | Moderate; water when the top 3–4 cm of soil dries out | 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 |
| evergreen miscanthus | Direct sun (at least 4-6 hours) | Every 7–14 days during the growing season; reduce but do not cease in mild winters | Pet-safe |
| 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 |
| 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 |
| 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 |
| fairy aprons | Bright indirect light (just back from a sunny window) | Keep media constantly wet; use the tray method year-round | Pet-safe |
| 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 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 |
| Fascinator Zebra Plant | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth; reduce when flowering | Pet-safe |
| Female Bamboo | Direct sun (at least 4-6 hours) | 2-3 times per week in growing season; reduce significantly in dry or cooler periods | 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 |
| 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 |
| 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 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 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 |
| 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 |
| Filicoides Hinoki Cypress | Direct sun (at least 4-6 hours) | Every 5-7 days when young, then when the top few cm of soil dry | Mildly toxic to pets |
| Filifera Aurea Cypress | Direct sun (at least 4-6 hours) | Every 5-7 days while establishing, then when the top few cm of soil dry | 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 |
| 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 |
| 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 |
| 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 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 Parlour Palm | Low light (north window or shaded room) | Every 7–10 days in spring and summer; every 14–21 days in autumn and winter | Pet-safe |
| 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 |
| 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 |
| 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 |
| 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-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-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 |
| 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 |
| 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 |
| 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 tobacco | Bright indirect light (just back from a sunny window) | Every 3–5 days; keep soil consistently moist | Toxic to pets |
| Fly Bush | Direct sun (at least 4-6 hours) | Keep substrate consistently moist but not waterlogged; water every 2–4 days depending on conditions | Pet-safe |
| 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 |
| 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 |
| 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'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 Sundew | Direct sun (at least 4-6 hours) | Sit in 1–3 cm of standing water at all times during the growing season; reduce to barely moist during winter dormancy | 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's Ginger Lily | Bright indirect light (just back from a sunny window) | Generously and consistently through spring and summer | Mildly 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 |
| 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 |
| 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 |
| Foxglove | Bright indirect light (just back from a sunny window) | Regularly — weekly in summer, less in winter | 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 |
| Foxtail Orchid | Bright indirect light (just back from a sunny window) | When the bark approaches dryness, typically every 7-10 days | Pet-safe |
| Foxtail Palm | Direct sun (at least 4-6 hours) | When the top few cm of soil dries; regularly in growth | Mildly toxic to pets |
| 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 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 |
| Fraser Fir | Direct sun (at least 4-6 hours) | Regularly; moist but well-drained | Mildly toxic to pets |
| 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 |
| 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 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 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 |
| 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 |
| 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 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 |
| Fused Tooth Venus flytrap | Direct sun (at least 4-6 hours) | Continuously moist via tray method during growing season; damp only in dormancy | Pet-safe |
| Gamboge | Direct sun (at least 4-6 hours) | Twice weekly; more frequently in hot weather | 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'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 Bignone | Direct sun (at least 4-6 hours) | Every 7–10 days; drought-tolerant when established | Mildly toxic to pets |
| 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 |
| 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 |
| 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 |
| 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 Bamboo | Direct sun (at least 4-6 hours) | Frequently; requires abundant moisture year-round | 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 Dragon Orchid | Low light (north window or shaded room) | Daily or every other day | 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 | Direct sun (at least 4-6 hours) | Regularly; keep soil moderately moist | Mildly 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 Ginger Lily | Direct sun (at least 4-6 hours) | Generously during active growth; reduce markedly in autumn and winter | Pet-safe |
| 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 honeysuckle | Direct sun (at least 4-6 hours) | Twice weekly in active growth; reduce significantly in cooler months | Mildly toxic to pets |
| Giant Ixora | Direct sun (at least 4-6 hours) | Every 2-3 days in warm weather, once a week in cooler periods | Mildly toxic to pets |
| 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 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 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 Sunburst Lotus | Direct sun (at least 4-6 hours) | Aquatic — continuously in still or gently moving water | Mildly toxic to pets |
| 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 Thorny Bamboo | Direct sun (at least 4-6 hours) | 2-3 times per week during the growing season; reduce in the dry season | Pet-safe |
| Giant Timber Bamboo | Direct sun (at least 4-6 hours) | Deeply 2-3 times per week; more frequently in hot weather or during shooting season | Pet-safe |
| 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 Wild Pine | Bright indirect light (just back from a sunny window) | Weekly soak or twice-weekly misting | Pet-safe |
| Girard's Thrift | Direct sun (at least 4-6 hours) | Every 2–3 weeks in the growing season; very sparingly in winter | Mildly 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 |
| Glaziou's Fuchsia | Bright indirect light (just back from a sunny window) | Water freely in growth; reduce in winter | Pet-safe |
| Glenn Mango | Direct sun (at least 4-6 hours) | Deep soak when the top few centimetres of soil dry, about every 5-10 days in growth | 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 |
| 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 |
| Glyceria maxima 'Variegata' | Direct sun (at least 4-6 hours) | Keep constantly moist to shallowly submerged | Toxic to pets |
| 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 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 |
| Golden Angel's Trumpet | Direct sun (at least 4-6 hours) | Every 2–4 days in summer (soil evenly moist; never waterlogged) | Toxic to pets |
| Golden Apple | Direct sun (at least 4-6 hours) | Every 7–14 days; moderate drought tolerance when established | Pet-safe |
| Golden Ash | Direct sun (at least 4-6 hours) | Moderate; regular deep watering when establishing | 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 Chalice Vine | Direct sun (at least 4-6 hours) | Weekly in active growth; every 2–3 weeks in winter | Toxic to pets |
| Golden Club | Direct sun (at least 4-6 hours) | Permanently aquatic; plant crown 10–15 cm (4–6 in) below the water surface | Mildly 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 Malayan Dwarf Coconut | Direct sun (at least 4-6 hours) | Keep consistently moist; water every 3-5 days in heat, never drying out fully | Pet-safe |
| 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 '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 Tree Fern | Bright indirect light (just back from a sunny window) | 2-3 times per week; trunk must stay moist | Pet-safe |
| Golden Trumpet | Direct sun (at least 4-6 hours) | When the top 2-5 cm of soil is dry (roughly weekly in summer) | Mildly toxic to pets |
| 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-Leaved Jerusalem Sage | Direct sun (at least 4-6 hours) | Low — water every 2–3 weeks in summer; keep dry in winter | Mildly toxic to pets |
| 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-rayed Lily | Direct sun (at least 4-6 hours) | When top 3 cm of soil is dry | 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 |
| 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 |
| 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 |
| Graceful Cattail | Direct sun (at least 4-6 hours) | Continuously moist to submerged | Pet-safe |
| 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 Fir | Direct sun (at least 4-6 hours) | Weekly during establishment; rainfall-dependent once mature | Pet-safe |
| 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 |
| 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-leaved bladderwort | Direct sun (at least 4-6 hours) | Permanently submerged in shallow aquarium or terrarium water column | Pet-safe |
| Grass-Leaved Ginger | Direct sun (at least 4-6 hours) | 2–3 times per week during active growth; reduce to once a week or less in winter | Mildly toxic to pets |
| Grasshopper Lycaste | Bright indirect light (just back from a sunny window) | Every 5–7 days in growth; near-dry rest in winter | Pet-safe |
| Grassy Arrowhead | Direct sun (at least 4-6 hours) | Permanently aquatic; grow in standing water 5–30 cm (2–12 in) deep | Pet-safe |
| Great Solomon's Seal | Low light (north window or shaded room) | Every 4-6 days in active growth; drought-tolerant once established | 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 |
| Greater Sea Spurrey | Direct sun (at least 4-6 hours) | Minimal supplemental watering; relies on coastal rainfall and tidal humidity | Mildly toxic to pets |
| Greater Spearwort | Direct sun (at least 4-6 hours) | Shallow to moderate water depth: 10–45 cm | 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 Arrow Arum | Direct sun (at least 4-6 hours) | Permanent standing water or consistently saturated soil; never allow to dry out | 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 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 Sapote | Direct sun (at least 4-6 hours) | Every 7–10 days; allow partial drying between irrigations | Mildly 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-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'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 |
| Greenish Air Plant | Bright indirect light (just back from a sunny window) | 2–3 times per week (misting) or weekly soak | Pet-safe |
| Grey Club-rush | Direct sun (at least 4-6 hours) | Shallow to moderately deep aquatic; 10–60 cm over the crown | 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 |
| 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 |
| Grumichama | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil dries, roughly weekly; keep young plants evenly moist | 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 |
| Guadua Bamboo | Direct sun (at least 4-6 hours) | Frequently during establishment; moderate once mature | Pet-safe |
| Guapeva | Direct sun (at least 4-6 hours) | Every 5–7 days when young; established trees tolerate short dry spells | Mildly 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 |
| Guava | Direct sun (at least 4-6 hours) | Deeply every 5-10 days; keep evenly moist during flowering and fruiting, then allow brief dry spells | 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 |
| 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 |
| Gymnocarpium dryopteris 'Plumosum' | Low light (north window or shaded room) | Keep the soil consistently moist, watering when the top 1-2 cm dries, roughly every 4-6 days | Mildly toxic to pets |
| 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 |
| Hairy Abutilon | Bright indirect light (just back from a sunny window) | Regularly; keep soil evenly moist in growth | 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 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 Ginger Lily | Bright indirect light (just back from a sunny window) | Keep moist throughout active growth; water sparingly in winter | Pet-safe |
| Hairy Kohleria | Bright indirect light (just back from a sunny window) | Every 7–10 days during growth; minimal in dormancy | Pet-safe |
| 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 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 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 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 Thrift | Direct sun (at least 4-6 hours) | Every 2–3 weeks when established | Mildly toxic to pets |
| 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-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 |
| 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-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 |
| 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 Rush | Direct sun (at least 4-6 hours) | Consistently moist to saturated soil; tolerates standing water to 7 cm (3 in) deep | 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 |
| 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 |
| 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 |
| 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 |
| 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 of Flame Bromeliad | Direct sun (at least 4-6 hours) | Every 7–10 days in summer; every 2–3 weeks in winter | Mildly toxic to pets |
| 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 Homalomena | Low light (north window or shaded room) | Every 10–14 days in growing season; every 14–21 days in winter | 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 Hornbeam | Medium indirect light (a couple of metres from a window) | Moderate; water regularly when young; maintain consistent moisture | Pet-safe |
| Heath Spotted Orchid | Bright indirect light (just back from a sunny window) | Consistent moisture from rainfall | Mildly toxic to pets |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| Hemlock Water Dropwort | Direct sun (at least 4-6 hours) | Constantly wet; wetland marginal or in-water species | 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 |
| Henderson's Allamanda | Direct sun (at least 4-6 hours) | Every 5–7 days during active growth; sparingly in winter | 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 |
| Herald's Trumpet | Direct sun (at least 4-6 hours) | Every 5-7 days in growth, every 14 days in winter | 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 |
| 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 |
| Hibiscus rosa-sinensis 'Cooper' | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, every 3-5 days in active growth | Pet-safe |
| 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 |
| 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 |
| 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 Yew | Medium indirect light (a couple of metres from a window) | Weekly during establishment; every 1–2 weeks once established | Toxic to pets |
| Hinoki Cypress | Direct sun (at least 4-6 hours) | Every 5-7 days while establishing, then when the top few cm of soil dry | Mildly toxic to pets |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| Houttuynia cordata | Direct sun (at least 4-6 hours) | Keep soil constantly wet to waterlogged; never let it dry out | Mildly toxic to pets |
| Houttuynia cordata 'Chameleon' | Direct sun (at least 4-6 hours) | Keep soil constantly wet to waterlogged; never allow it to dry | Mildly toxic to pets |
| 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 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 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 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 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 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 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 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 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 '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 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 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 |
| 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 |
| 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 '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 '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 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 |
| 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 |
| 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 |
| Ice Cream Banana | Direct sun (at least 4-6 hours) | Keep evenly moist; water when the top 2-3 cm of soil dries, every 2-4 days in warm growth | Pet-safe |
| Ice Cream Bean | Direct sun (at least 4-6 hours) | Deeply once or twice a week; reduce in cooler months | Mildly 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 |
| Impatiens hawkeri 'SunPatiens Compact Hot Coral' | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, often daily in full sun during summer | Pet-safe |
| Impatiens hawkeri 'SunPatiens Spreading White' | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, often daily in full sun and in baskets | Pet-safe |
| Impatiens walleriana 'Xtreme Salmon' | Low light (north window or shaded room) | When the top 1-2 cm of soil begins to dry, often every 1-3 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 |
| Indian Cucumber Root | Low light (north window or shaded room) | Consistently moist; water whenever the top 2–3 cm of soil begins to dry during the growing season | Mildly toxic to pets |
| Indian Timber Bamboo | Direct sun (at least 4-6 hours) | 2-3 times per week during the growing season; reduce 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 |
| 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 |
| 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) | 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 |
| Iridescent Bamboo | Direct sun (at least 4-6 hours) | Twice weekly in spring and summer; weekly in autumn; fortnightly in winter | Pet-safe |
| Irish heath | Direct sun (at least 4-6 hours) | Weekly while establishing; every 2–3 weeks once established | Pet-safe |
| 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 |
| Italian Sage Phlomis | Direct sun (at least 4-6 hours) | Low — once every 2–3 weeks once established | 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 |
| 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-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 | Direct sun (at least 4-6 hours) | Keep consistently moist; water when the top 3-4 cm of soil dries, often 1-2 times weekly | Mildly 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 |
| Jack-in-the-Pulpit | Low light (north window or shaded room) | Keep the soil consistently moist throughout the growing season, watering whenever the surface begins to dry; it tolerates short dry spells but resents drought. | Toxic to pets |
| Jackfruit | Direct sun (at least 4-6 hours) | Deeply every 5-10 days; keep young trees evenly moist, with a drier spell tolerated by established trees | Mildly toxic to pets |
| 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 |
| Jamaican Tall Coconut | Direct sun (at least 4-6 hours) | Keep consistently moist; water every 3-5 days in heat, never drying out fully | Pet-safe |
| Japanese Arborvitae | Direct sun (at least 4-6 hours) | Regular — keep soil evenly moist; do not allow to dry out completely | Pet-safe |
| 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 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 Dunce Cap | Direct sun (at least 4-6 hours) | Every 10–14 days in the growing season; reduce significantly in winter dormancy | Pet-safe |
| 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 Mazus | Direct sun (at least 4-6 hours) | Every 3–5 days; prefers moist, consistently watered soil | Mildly toxic to pets |
| Japanese morning glory | Direct sun (at least 4-6 hours) | 2–3 times per week in containers; once a week in garden beds during dry spells | Toxic to pets |
| 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 | 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 Royal Fern | Medium indirect light (a couple of metres from a window) | Frequently — keep soil constantly moist | Pet-safe |
| Japanese Timber Bamboo | Direct sun (at least 4-6 hours) | Frequent during establishment; moderate once established | Pet-safe |
| Jasminum sambac 'Grand Duke of Tuscany' | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, roughly every 4-7 days in growth | Pet-safe |
| Jasminum sambac 'Maid of Orleans' | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, roughly every 3-6 days in warm growth | Pet-safe |
| Java Plum | Direct sun (at least 4-6 hours) | Water regularly when young; established trees are drought-tolerant and flood-tolerant. | 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 |
| 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 |
| 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 |
| Joe-Pye Weed | Direct sun (at least 4-6 hours) | Keep soil consistently moist; water every 3-5 days in dry weather | Toxic to pets |
| 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 |
| 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 |
| 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 |
| Jungle Geranium | Direct sun (at least 4-6 hours) | Water when the top 2-3 cm of soil feels dry, roughly 1-2 times per week in growth | Pet-safe |
| Juno Iris | Direct sun (at least 4-6 hours) | Moderate from early spring to late spring; completely dry mid-summer to mid-autumn | Toxic to pets |
| 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 |
| Kacip Fatimah | Low light (north window or shaded room) | Water when the top 1–2 cm of soil begins to dry; typically every 4–6 days in warm conditions | Mildly 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 |
| 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 |
| Kashmir Cypress | Direct sun (at least 4-6 hours) | Regularly; moist but well-drained | 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 |
| Keitt Mango | Direct sun (at least 4-6 hours) | Water when the top 3-5 cm of soil dries during growth; reduce before flowering | Mildly toxic to pets |
| Kenneally's Sundew | Bright indirect light (just back from a sunny window) | Standing tray (growing season); minimal (dry rest) | Pet-safe |
| Kent Mango | Direct sun (at least 4-6 hours) | Water when the top 3-5 cm of soil dries in growth; reduce in the cool/dry rest period | Mildly 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 |
| Killarney Fern | Low light (north window or shaded room) | Continuously moist — maintain permanent moisture in the sphagnum substrate and high atmospheric humidity at all times | Mildly toxic to pets |
| 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 Henry Venus flytrap | Direct sun (at least 4-6 hours) | Continuously moist via tray method; barely damp in 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 of Hearts Brunnera | Low light (north window or shaded room) | Keep soil consistently moist; water when the top 2-3 cm dries, about every 5-7 days in warm weather | Mildly 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 |
| King Sundew | Direct sun (at least 4-6 hours) | Keep the pot standing in 1-2 cm of water at all times; top up before the tray runs dry | Mildly toxic to pets |
| 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 |
| 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 |
| 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 |
| Kokum | Direct sun (at least 4-6 hours) | Water regularly to keep soil consistently moist; do not allow to dry out. | Mildly toxic to pets |
| 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 Fir | Direct sun (at least 4-6 hours) | Weekly during establishment; moderately drought-tolerant once mature | Pet-safe |
| 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 |
| Korlan | Direct sun (at least 4-6 hours) | Every 4–6 days for young trees; reduce to every 10–14 days once established in seasonally wet climates | Mildly 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 |
| Kunstler's Scaphochlamys | Low light (north window or shaded room) | Regularly; keep substrate consistently moist year-round | Mildly toxic to pets |
| 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 |
| 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 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 |
| 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 Finger Banana | Direct sun (at least 4-6 hours) | Keep consistently moist; water when the top 2-3 cm of soil dries, roughly every 2-4 days in warm growth | Pet-safe |
| 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 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 |
| 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 |
| 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 |
| 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 |
| 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 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 | Medium indirect light (a couple of metres from a window) | Keep tray topped up year-round | Pet-safe |
| Lance-leaved Water Plantain | Direct sun (at least 4-6 hours) | Permanently waterlogged to submerged; 5–30 cm (2–12 in) water depth | 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 |
| 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-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-flowered Bacopa | Direct sun (at least 4-6 hours) | Keep soil evenly and consistently moist | Mildly toxic to pets |
| 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 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-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 |
| Lasia spinosa | Bright indirect light (just back from a sunny window) | Keep constantly wet to waterlogged | Toxic to pets |
| Laurel Clockvine | Direct sun (at least 4-6 hours) | Every 2–4 days during active growth; reduce in cooler months | Mildly 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 |
| 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 |
| 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 |
| Lawson Cypress | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 2 weeks once established | Mildly toxic to pets |
| Least Yellow Water Lily | Direct sun (at least 4-6 hours) | Permanently aquatic; plant at 20–60 cm (8–24 in) water depth | 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 |
| 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 |
| 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 Drop Mangosteen | Direct sun (at least 4-6 hours) | Water regularly; requires consistently moist soil and high annual rainfall equivalent. | Mildly toxic to pets |
| 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 |
| 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 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 Spearwort | Direct sun (at least 4-6 hours) | Saturated mud to 5 cm standing water | 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 |
| Lesser Water Plantain | Direct sun (at least 4-6 hours) | Saturated to 10 cm depth of water | 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 |
| Licuala Orbicularis | Low light (north window or shaded room) | Keep consistently moist; water when the surface just begins to dry | Mildly toxic to pets |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 sessiliflora | Bright indirect light (just back from a sunny window) | Grown submersed; do a 30-50% aquarium water change weekly | 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 |
| 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 |
| 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 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 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 |
| 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 Ixora | Bright indirect light (just back from a sunny window) | Every 2-3 days in summer, weekly in cooler months | Mildly toxic to pets |
| Lobbi Japanese Cedar | Direct sun (at least 4-6 hours) | Weekly during establishment; fortnightly in dry spells once mature | Mildly toxic to pets |
| Lobelia cardinalis | Direct sun (at least 4-6 hours) | Keep consistently moist to wet; never let it dry out | Toxic to pets |
| Lobelia siphilitica | Direct sun (at least 4-6 hours) | Keep consistently moist; tolerates wet soil and short dry spells | Toxic to pets |
| Lobster Claw Heliconia | Bright indirect light (just back from a sunny window) | Every 5–7 days; maintain consistently moist soil | Mildly toxic to pets |
| 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-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-Flowered Chalice Vine | Direct sun (at least 4-6 hours) | Weekly during the growing season; fortnightly in winter | Toxic to pets |
| 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 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-Leaved Phlomis | Direct sun (at least 4-6 hours) | Low — water every 2–3 weeks during the growing season; minimal to none in winter | Mildly toxic to pets |
| 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 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-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 |
| Longan | Direct sun (at least 4-6 hours) | Water when the top 3-5 cm of soil dries; keep steady in growth | Mildly toxic to pets |
| Longan | Direct sun (at least 4-6 hours) | Every 5–7 days for young trees; every 10–14 days once established | 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 |
| 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 |
| Lords-and-Ladies | Low light (north window or shaded room) | Weekly during active growth (autumn–spring); reduce in summer dormancy | 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 |
| Low Shield Plant | Low light (north window or shaded room) | Every 10–14 days; less in winter | Toxic to pets |
| 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 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 |
| Ludisia discolor 'Alba' | Low light (north window or shaded room) | When the top 1-2 cm of mix is just drying, roughly every 5-7 days | Pet-safe |
| 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 |
| 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 |
| 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 |
| 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 |
| Lychee | Direct sun (at least 4-6 hours) | Keep evenly moist in growth; water when the top 3-5 cm dries | Mildly toxic to pets |
| Lycian Sage Phlomis | Direct sun (at least 4-6 hours) | Low — every 2–3 weeks in the growing season; minimal to none in winter | 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 |
| Lythrum salicaria | Direct sun (at least 4-6 hours) | Keep wet; thrives in saturated soil and shallow water | 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 |
| 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 Sundew | Direct sun (at least 4-6 hours) | Continuously — maintain 1–3 cm of water in a tray year-round during active growth; reduce tray depth in winter. | Pet-safe |
| Magdalene Angraecum | Bright indirect light (just back from a sunny window) | Regular watering spring–autumn; reduce markedly in winter | Pet-safe |
| Magenta Cherry | Direct sun (at least 4-6 hours) | Every 5–7 days in the growing season; reduce to every 10–14 days in winter | Mildly toxic to pets |
| 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 |
| 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's Ginger | Medium indirect light (a couple of metres from a window) | 2–3 times per week | 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 Quisqualis | Direct sun (at least 4-6 hours) | Every 3–5 days during dry periods; reduce in cool or wet seasons | Mildly toxic to pets |
| 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 |
| Malay Apple | Direct sun (at least 4-6 hours) | Deep watering every 4-7 days; keep consistently moist when fruiting | 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 |
| Mamey Apple | Direct sun (at least 4-6 hours) | 2–3 times per week; reduce in winter | Mildly toxic to pets |
| Mamey Sapote | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 5-9 days in growth | 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 |
| Mandevilla 'Alice du Pont' | Direct sun (at least 4-6 hours) | Keep evenly moist in summer; water when the top 2-3 cm of soil dries, often every 2-4 days in heat | Mildly toxic to pets |
| Mandevilla 'Sun Parasol Crimson' | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, every 3-5 days in summer heat | Mildly toxic to pets |
| 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 |
| Manica Cycad | Direct sun (at least 4-6 hours) | Every 1–2 weeks in summer; every 3–4 weeks in winter | 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 |
| 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 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 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 Rush | Direct sun (at least 4-6 hours) | Frequent to constant — prefers permanently moist to wet soil | Pet-safe |
| Many-flowered Schismatoglottis | Low light (north window or shaded room) | Every 7–10 days during active growth; less in cooler months | Toxic to pets |
| 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-spiked Sage | Direct sun (at least 4-6 hours) | Moderate; water when the top 5 cm of soil is dry | Mildly 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 |
| Marang | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil begins to dry, often every 3-6 days in warm growth | Mildly toxic to pets |
| 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 |
| 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 |
| Marginal Wood Fern | Low light (north window or shaded room) | Keep evenly moist while establishing; water deeply during droughts, about every 7-10 days in dry summers | 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 |
| 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 |
| 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 |
| 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 |
| Masters' Larch | Direct sun (at least 4-6 hours) | Weekly during first 2 years; monthly once established | Pet-safe |
| 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 |
| Mauritius Lychee | Direct sun (at least 4-6 hours) | Keep evenly moist in growth; water when the top 3-5 cm dries | Mildly toxic to pets |
| Mauritius Lychee | Direct sun (at least 4-6 hours) | 2–3 times per week in summer; withhold supplemental water in winter dry period | Mildly 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 |
| Mayapple | Low light (north window or shaded room) | 1–2 times per week during spring; reduce as plant enters summer dormancy | Toxic to pets |
| 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 Phlox | Direct sun (at least 4-6 hours) | 1-2 times per week; prefers consistently moist soil | Mildly toxic to pets |
| 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 Orchid | Medium indirect light (a couple of metres from a window) | Keep consistently moist; water every 2-4 days, more in heat | Pet-safe |
| Meebold's Lagenandra | Low light (north window or shaded room) | Keep permanently moist to fully submerged; 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 |
| 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 |
| Menyanthes trifoliata | Direct sun (at least 4-6 hours) | Keep permanently in wet mud or shallow water; never let it dry | Mildly toxic to pets |
| 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 Blue Fern | Low light (north window or shaded room) | Keep the rhizome and medium lightly moist; water every 4-6 days, allowing the surface to barely dry | 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 |
| 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) | Tray-water during growth; keep barely damp in winter | 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 |
| 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 |
| 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 | Direct sun (at least 4-6 hours) | Weekly during dry periods; moderate water requirements | 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 |
| Mimulus ringens | Direct sun (at least 4-6 hours) | Keep wet at all times; never allow the soil to dry | Mildly toxic to pets |
| Min Fir | Direct sun (at least 4-6 hours) | Regularly during establishment; moderate thereafter | 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 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 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 |
| Minute Masdevallia | Medium indirect light (a couple of metres from a window) | Every 2–3 days; keep medium consistently moist | 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 |
| Miss Grace Dawn Redwood | Direct sun (at least 4-6 hours) | Weekly or more in dry periods; tolerates wet soils | Pet-safe |
| 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 |
| 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 |
| Moluccan Fishtail Palm | Direct sun (at least 4-6 hours) | Regularly; maintain consistent soil moisture | Mildly toxic to pets |
| Momi Fir | Direct sun (at least 4-6 hours) | Moderate; water regularly during establishment | 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 Birch | Direct sun (at least 4-6 hours) | Regular watering for first 2–3 years; moderate once established | Pet-safe |
| Monkey Comb Vine | Direct sun (at least 4-6 hours) | Every 7–10 days during the growing season; reduce in cooler or drier months | Mildly toxic to pets |
| 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 |
| Monkey Jack | Direct sun (at least 4-6 hours) | Water young trees 2–3 times per week; established trees are moderately drought-tolerant and generally managed on natural rainfall in tropical climates. | 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 |
| 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 |
| 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 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 |
| 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 |
| Morell's Billbergia | Bright indirect light (just back from a sunny window) | Keep central cup filled; water substrate every 1-2 weeks | 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 |
| Moso Bamboo | Direct sun (at least 4-6 hours) | 2–3 times per week in the growing season; weekly in winter | Pet-safe |
| 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 |
| 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 |
| Mottled Wild Ginger | Low light (north window or shaded room) | Every 7–10 days during the growing season; every 14 days once well established | Mildly toxic to pets |
| Mountain Bladder Fern | Low light (north window or shaded room) | 2-3 times per week in active growth; reduce when dormant | Pet-safe |
| 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 Hemlock | Direct sun (at least 4-6 hours) | Weekly during establishment; relies on rainfall and snowmelt once established | Pet-safe |
| mountain laurel | Bright indirect light (just back from a sunny window) | Weekly during establishment; water during dry spells once established | Toxic to pets |
| Mountain Soursop | Direct sun (at least 4-6 hours) | Twice weekly when establishing; weekly once mature | Mildly toxic to pets |
| Mountain Sweet Pitcher Plant | Direct sun (at least 4-6 hours) | Tray method, moist year-round | Pet-safe |
| 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 |
| Mrs D.F. Maxwell Cornish heath | Direct sun (at least 4-6 hours) | Weekly while establishing; every 2–3 weeks once established | Pet-safe |
| Mulanje Cycad | Direct sun (at least 4-6 hours) | Weekly to fortnightly in summer; every 3–4 weeks in winter | 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 |
| 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 |
| Mysore trumpetvine | Bright indirect light (just back from a sunny window) | Regularly during growth; reduced in winter | 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 |
| 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 |
| Nam Doc Mai Mango | Direct sun (at least 4-6 hours) | Deep watering when the top 5 cm of soil dries, roughly every 5-10 days in growth | Pet-safe |
| Nana Lutea Hinoki Cypress | Direct sun (at least 4-6 hours) | Every 5-7 days while establishing, then when the top few cm of soil dry | 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-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-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 Pitcher Plant | Bright indirect light (just back from a sunny window) | Keep substrate evenly moist year-round | Mildly toxic to pets |
| Narrow-Leaved Spleenwort | Low light (north window or shaded room) | Every 2–3 days in warm months; reduce in winter | Pet-safe |
| Narrow-leaved Water Plantain | Direct sun (at least 4-6 hours) | Marginal aquatic; submerged 0–20 cm over the crown | 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 Sundew | Direct sun (at least 4-6 hours) | Keep in a shallow tray of 1–2 cm pure water throughout the growing season; allow the tray to dry briefly in winter during dormancy. | Pet-safe |
| 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 |
| 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 |
| 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 |
| 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 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 |
| 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-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 |
| Netted Chain Fern | Low light (north window or shaded room) | Freely — keep soil moist to seasonally wet | 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 |
| 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 |
| 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 |
| 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 Fir | Direct sun (at least 4-6 hours) | Weekly when establishing; reduced once established | 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 |
| 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 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 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 Fir | Direct sun (at least 4-6 hours) | Regular watering during establishment; naturally sustained by Pacific Northwest rainfall | 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 |
| Noni | Direct sun (at least 4-6 hours) | When the top few centimetres of soil dry out, about every 5-7 days | Mildly toxic to pets |
| Nootka Cypress | Direct sun (at least 4-6 hours) | Weekly during establishment; every 2–3 weeks once established | Mildly toxic to pets |
| Nootka Cypress | Direct sun (at least 4-6 hours) | Regularly during establishment; tolerates wet or dry once mature | Pet-safe |
| Nordmann Fir | Direct sun (at least 4-6 hours) | Weekly during establishment; relies on rainfall once established | Pet-safe |
| 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 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 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| One-flowered Clintonia | Low light (north window or shaded room) | Maintain consistently moist soil; water deeply when the top 2 cm begins to dry | Mildly 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 |
| Orange Woolly Sage | Bright indirect light (just back from a sunny window) | Weekly in the growing season; reduce to monthly in winter | Pet-safe |
| 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 |
| 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 |
| Oriental Ostrich Fern | Low light (north window or shaded room) | Regularly — keep soil consistently moist to moderately dry | 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| Pacific Yew | Low light (north window or shaded room) | Weekly during establishment; every 2 weeks once established | Toxic to pets |
| 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 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 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 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 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 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 Lady sweet pea | Direct sun (at least 4-6 hours) | Every 3–5 days; daily in hot weather | Toxic to pets |
| 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 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 |
| 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 Pitcher Plant | Direct sun (at least 4-6 hours) | Keep soil permanently wet; refill the standing tray as it dries | Pet-safe |
| 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 |
| 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) | 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 |
| Palo Alto Sweetgum | Direct sun (at least 4-6 hours) | Regular in first 2–3 years; moderate once established | Mildly toxic to pets |
| Panama Queen | Bright indirect light (just back from a sunny window) | Every 5–7 days during the growing season; reduce in winter | Pet-safe |
| Panama Rose | Direct sun (at least 4-6 hours) | Every 5–7 days; allow topsoil to dry slightly between waterings | Mildly toxic to pets |
| Panama Rose Shrub | Direct sun (at least 4-6 hours) | Once per week during dry seasons; minimal during wet seasons | Mildly toxic to pets |
| 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 |
| 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 |
| Papaya | Direct sun (at least 4-6 hours) | Water when the top 3-5 cm of soil is dry; consistent moisture without saturation, often every 3-5 days in warmth | Mildly 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 |
| 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 |
| 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 |
| Partridgeberry | Low light (north window or shaded room) | Keep soil evenly moist; water when the top 1–2 cm begins to dry | Pet-safe |
| 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 |
| 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 |
| Peacock fern | Low light (north window or shaded room) | Keep the substrate evenly moist at all times — never let it dry out | Pet-safe |
| 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 |
| Pedalai | Direct sun (at least 4-6 hours) | Water 3–4 times per week for young trees; established trees in ground need weekly deep irrigation supplemented by natural rainfall. | Pet-safe |
| 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 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 |
| Pendulous Homalomena | Low light (north window or shaded room) | Every 7–12 days in summer; every 14–18 days in winter | Toxic to pets |
| Peony Lotus | Direct sun (at least 4-6 hours) | Aquatic — permanently in still or gently circulating water | Mildly toxic to pets |
| 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 '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 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 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 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 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 perciliata | Bright indirect light (just back from a sunny window) | When the soil surface 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 |
| Pepino Dulce | Direct sun (at least 4-6 hours) | Keep evenly moist; water deeply every 2-4 days in summer, more in containers | Toxic to pets |
| 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 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 |
| 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 |
| Phegopteris connectilis | Low light (north window or shaded room) | Keep soil evenly moist; water when the top 1-2 cm begins to dry, roughly every 4-6 days in growth | Pet-safe |
| Phegopteris hexagonoptera | Low light (north window or shaded room) | Keep consistently moist; water when the surface starts to dry, about every 4-6 days during growth | Pet-safe |
| 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 Brandtianum (Silver Leaf) | Bright indirect light (just back from a sunny window) | Roughly weekly in growing season; less in winter | 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 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 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 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 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 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 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 |
| 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 |
| Phragmites australis | Direct sun (at least 4-6 hours) | Keep wet to shallowly flooded year-round | Mildly 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 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-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 |
| 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 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 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 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 Arisaema | Low light (north window or shaded room) | Keep moist through the growing season once growth appears, watering when the surface dries; reduce sharply as the leaf dies back to dormancy. | 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 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 Coreopsis | Direct sun (at least 4-6 hours) | Moderate to high; keep soil evenly moist | Pet-safe |
| 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 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 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 Mandevilla | Direct sun (at least 4-6 hours) | 2-3 times per week in active growth, every 10-14 days in winter | 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 heather | Direct sun (at least 4-6 hours) | Consistently moist throughout the growing season; less in winter | 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 Pitcher Plant | Direct sun (at least 4-6 hours) | Keep constantly moist to wet — sit in 2–5 cm of standing water during the growing season | Mildly toxic to pets |
| 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 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 Sundew | Bright indirect light (just back from a sunny window) | Tray method, continuously wet | Pet-safe |
| 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 |
| Pistia stratiotes | Direct sun (at least 4-6 hours) | Floats permanently on water; keep the water body topped up and the rosette crown dry | 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 |
| 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 |
| Pitomba | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil dries, roughly weekly; keep young plants more consistently moist | Mildly toxic to pets |
| 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 Thrift | Direct sun (at least 4-6 hours) | Every 2–3 weeks once established | Mildly toxic to pets |
| 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 |
| Pleasant Lembocarpus | Low light (north window or shaded room) | Keep substrate consistently moist during the growing season; withhold water during dormancy | Pet-safe |
| 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 |
| 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 |
| Pleurothallis grobyi | Low light (north window or shaded room) | Keep roots evenly moist; water every 2-3 days potted, or mist/water mounted plants daily | Mildly toxic to pets |
| Pleurothallis restrepioides | Low light (north window or shaded room) | Keep evenly moist, watering roughly every 2-3 days; do not allow a hard dry-out | Mildly toxic to pets |
| Pleurothallis truncata | Low light (north window or shaded room) | Keep evenly moist; water every 2-3 days potted or mist mounted plants daily | Mildly toxic to pets |
| 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 |
| 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 |
| 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 |
| 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 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 |
| 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 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 '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 |
| 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 |
| Polystichum aculeatum | Low light (north window or shaded room) | Keep soil consistently moist; water every 5-7 days in dry spells once established | Pet-safe |
| Polystichum makinoi | Low light (north window or shaded room) | Keep evenly moist; water every 5-7 days during dry weather | Pet-safe |
| Polystichum neolobatum | Low light (north window or shaded room) | Keep consistently moist; water every 5-7 days in dry conditions | Pet-safe |
| Polystichum setiferum 'Divisilobum' | Low light (north window or shaded room) | Keep evenly moist; water deeply during dry spells, roughly weekly in summer | Pet-safe |
| Polystichum setiferum 'Plumosum Densum' | Low light (north window or shaded room) | Keep evenly moist; water deeply during dry spells, roughly weekly in summer | Pet-safe |
| Pomelo | Direct sun (at least 4-6 hours) | When the top 4-5 cm of soil is dry, about every 5-10 days | Toxic to pets |
| Pond Apple | Direct sun (at least 4-6 hours) | Keep soil consistently moist to wet; tolerates periodic flooding | Mildly toxic to pets |
| Pond Cypress | Direct sun (at least 4-6 hours) | Keep consistently moist; tolerates standing water and periodic flooding | Mildly toxic to pets |
| 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 |
| Pothos-leaf Labisia | Low light (north window or shaded room) | Water when the top 1–2 cm of medium begins to dry; every 4–7 days depending on temperature and pot size | Mildly 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 |
| Pouched Catasetum | Direct sun (at least 4-6 hours) | Daily during active growth; stop completely during dormancy | Pet-safe |
| 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 |
| Powdery Thalia | Direct sun (at least 4-6 hours) | Permanent standing water or saturated soil; 15–45 cm over crown | Mildly toxic to pets |
| Prairie Milkweed | Direct sun (at least 4-6 hours) | Moderate; tolerates moist conditions better than most milkweeds | 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 |
| 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 |
| 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 |
| 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-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 |
| Primulina (Chirita) | Bright indirect light (just back from a sunny window) | When the top of the soil feels dry | 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 |
| Princess Flower | Direct sun (at least 4-6 hours) | Roughly weekly; keep the soil evenly moist | 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 |
| 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 |
| 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 |
| Pulasan | Direct sun (at least 4-6 hours) | Regular watering every 3-7 days; keep soil evenly moist | Mildly toxic to pets |
| Pulasan | Direct sun (at least 4-6 hours) | Every 3–5 days for young trees; every 7–10 days for established trees during dry periods | Mildly toxic to pets |
| Punting-Pole Bamboo | Direct sun (at least 4-6 hours) | Once or twice per week during growing season; less frequent in winter | Pet-safe |
| Purple Allamanda | Direct sun (at least 4-6 hours) | Every 3–5 days during active growth; reduce to weekly or less in cooler months | Toxic to pets |
| Purple Glory Tree | Direct sun (at least 4-6 hours) | Water regularly in spring and summer to keep soil consistently moist; reduce in cooler months. | Mildly toxic to pets |
| Purple mountain heather | Direct sun (at least 4-6 hours) | Regularly; maintain consistent moisture throughout the growing season | Mildly toxic to pets |
| Purple Pitcher Plant | Direct sun (at least 4-6 hours) | Keep constantly moist to wet; stand the pot in 1-2 cm of water during the growing season | 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 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 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 Wreath | Direct sun (at least 4-6 hours) | Every 5–7 days during the growing season; every 10–14 days in cooler months | Mildly toxic to pets |
| 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 |
| 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 |
| Pygmy Rwandan Water Lily | Direct sun (at least 4-6 hours) | Keep roots in very shallow, warm, constantly moist conditions — water depth 1–3 cm over the substrate | Mildly toxic to pets |
| Pygmy Sundew | Direct sun (at least 4-6 hours) | Keep soil moist via a shallow tray; top up as it dries | Pet-safe |
| 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 |
| 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 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 Prairie | Bright indirect light (just back from a sunny window) | Frequently — keep soil consistently moist | Mildly 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 |
| 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'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 |
| 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 |
| Rainbow Plant | Direct sun (at least 4-6 hours) | Keep substrate consistently wet using the tray method | Mildly toxic to pets |
| 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 |
| 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 |
| Ram's Head Catasetum | Direct sun (at least 4-6 hours) | Heavily during growth; completely stopped during leafless dormancy | Pet-safe |
| Rambai | Direct sun (at least 4-6 hours) | 2–3 times per week; more frequent in dry season | Mildly toxic to pets |
| Rambutan | Direct sun (at least 4-6 hours) | Regular watering every 3-7 days; keep soil evenly moist year-round | Mildly toxic to pets |
| Rangoon Creeper | Direct sun (at least 4-6 hours) | Regularly during active growth — roughly every 3–5 days; reduce 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 |
| 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 Angel's Trumpet | Direct sun (at least 4-6 hours) | Every 3–5 days (keep evenly moist; allow top 2 cm to dry) | 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 Banana | Direct sun (at least 4-6 hours) | Keep evenly moist; water when the top 2-3 cm of soil is dry, every 2-4 days in active growth | Pet-safe |
| 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 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 Clockvine | Direct sun (at least 4-6 hours) | Every 3–5 days during active growth; reduce in winter | Mildly toxic to pets |
| Red Dragon Venus Flytrap | Direct sun (at least 4-6 hours) | Keep in standing water year-round except dormancy | Pet-safe |
| Red escallonia | Direct sun (at least 4-6 hours) | Weekly during establishment; drought-tolerant once established | Mildly toxic to pets |
| 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 Inca Passionflower | Direct sun (at least 4-6 hours) | Every 3–5 days; keep consistently moist but not waterlogged | 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 Lady Papaya | Direct sun (at least 4-6 hours) | Water when the top 3-5 cm of soil is dry; steady moisture without saturation, often every 3-5 days in warmth | 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 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 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 Riding Hood Mandevilla | Direct sun (at least 4-6 hours) | Every 2-3 days in summer when actively blooming, reduce to every 10-14 days in winter | Mildly toxic to pets |
| Red Silk Cotton Tree | Direct sun (at least 4-6 hours) | Every 7–14 days in the growing season; every 3–5 weeks in winter | Mildly 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 Spruce | Direct sun (at least 4-6 hours) | Weekly in dry periods; naturally receives adequate moisture in humid northeastern climates | 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 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-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 Durian | Direct sun (at least 4-6 hours) | Daily watering in dry periods; 3–4 times per week when humidity is high | 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-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 |
| 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 |
| Reed Sweetgrass | Direct sun (at least 4-6 hours) | Shallow to moderate aquatic; submerged 0–30 cm; tolerates winter flooding | 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 |
| 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 Masdevallia | Medium indirect light (a couple of metres from a window) | Daily in warm weather; every 2–3 days in cooler months | 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 |
| 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 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 |
| 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 |
| 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 |
| 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 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| Ringed Begonia | Bright indirect light (just back from a sunny window) | When the top 1 inch of soil is dry | Toxic to pets |
| Rio Jaboticaba | Direct sun (at least 4-6 hours) | Every 2–3 days when young; deeply once or twice per week when established | Mildly 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 Crowfoot | Direct sun (at least 4-6 hours) | Permanently submerged in flowing or moderately moving water 15–60 cm deep | 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 |
| 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 |
| 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 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 |
| 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 Apple | Direct sun (at least 4-6 hours) | Deep watering every 5-7 days in growth; more often in fruiting and heat | Mildly 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 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 |
| 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 |
| 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 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 |
| Rough Bamboo | Direct sun (at least 4-6 hours) | Frequently; keep moist, especially when establishing | Pet-safe |
| 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-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 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 Rhoogeton | Low light (north window or shaded room) | Every 4–6 days; keep substrate consistently moist | Pet-safe |
| 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 |
| Roundleaf Sundew | Direct sun (at least 4-6 hours) | Keep saturated; stand in 1-3 cm of pure water through the growing season | 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 Typhonium | Medium indirect light (a couple of metres from a window) | Moderate during growing season; withhold in dormancy | 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| Sacred Buddhist | Direct sun (at least 4-6 hours) | Every 2–4 days in summer (or as soon as the soil surface begins to dry); less frequently in winter | 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 |
| 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 |
| Sakhalin Fir | Direct sun (at least 4-6 hours) | Moderate; water regularly during establishment | 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 |
| Salal | Low light (north window or shaded room) | Moderate; established plants are drought-tolerant but prefer moist conditions | Pet-safe |
| 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 |
| 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 |
| Sander's Billbergia | Bright indirect light (just back from a sunny window) | Every 1–2 weeks (cup); soil when dry | 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 Vanda | Direct sun (at least 4-6 hours) | Daily in warmth; every 2-3 days when cool and dim | Pet-safe |
| Santol | Direct sun (at least 4-6 hours) | 2–3 times per week when establishing; established trees tolerate short dry spells | Mildly toxic to pets |
| Sapodilla | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 5-10 days in growth | Mildly 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 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 |
| 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 Rubra | Direct sun (at least 4-6 hours) | Keep the soil constantly wet; stand the pot in 1-3 cm of water during the growing season | Pet-safe |
| Sarracenia-like sun pitcher | Bright indirect light (just back from a sunny window) | Daily; keep media permanently moist | 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 |
| Satinleaf | Direct sun (at least 4-6 hours) | Weekly during establishment; every 10–14 days once established; drought-tolerant when mature | Mildly toxic to pets |
| Sawtooth Venus flytrap | Direct sun (at least 4-6 hours) | Keep continuously moist via the tray method | Pet-safe |
| Scaly Male Fern | Low light (north window or shaded room) | Keep soil moist; water in dry spells, especially while establishing | 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 Begonia | Bright indirect light (just back from a sunny window) | When top 2–3 cm of soil feels dry | Toxic to pets |
| 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 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 Sage | Direct sun (at least 4-6 hours) | Every 3–5 days; keep evenly moist | 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 |
| 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 |
| 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 |
| Schoenoplectus tabernaemontani 'Albescens' | Direct sun (at least 4-6 hours) | Keep permanently wet; never let the crown dry out | Mildly 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 |
| 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 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 |
| 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 |
| 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 Apple | Direct sun (at least 4-6 hours) | Every 10–14 days for established trees; weekly for young or containerised plants | Mildly toxic to pets |
| Sea Hibiscus | Direct sun (at least 4-6 hours) | 1–2 times per week in spring and summer; reduce in winter | Mildly toxic to pets |
| 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-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 |
| 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 |
| 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 |
| 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 |
| Sesse's Sage | Direct sun (at least 4-6 hours) | Every 7–10 days in summer; monthly in winter | Mildly toxic to pets |
| Sessile Elatostema | Low light (north window or shaded room) | Every 3–5 days; substrate should remain consistently moist | 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 | Direct sun (at least 4-6 hours) | 2–3 times per week in summer, reducing in winter | 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 |
| 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 Teeth Venus flytrap | Direct sun (at least 4-6 hours) | Continuously moist via tray watering; slightly drier in winter | 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-tipped Lepanthes | Medium indirect light (a couple of metres from a window) | Daily or every 2 days; keep roots consistently moist | Pet-safe |
| 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 fetterbush | Bright indirect light (just back from a sunny window) | Consistently moist to wet — do not allow prolonged drought | Toxic to pets |
| Shining Mandevilla | Direct sun (at least 4-6 hours) | 2-3 times per week in summer, reduce to every 10-14 days in winter | Mildly toxic to pets |
| 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 |
| Shoestring Fern | Low light (north window or shaded room) | Keep the mount or medium consistently moist; mist or water every 2-4 days | Pet-safe |
| 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-Frond Lady Fern | Low light (north window or shaded room) | Every 2–3 days; keep consistently moist | Pet-safe |
| 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-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 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 Japanese Lily | Bright indirect light (just back from a sunny window) | When top 2–3 cm of soil is dry | Toxic to pets |
| 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 |
| 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 |
| Siebold's Magnolia | Bright indirect light (just back from a sunny window) | Weekly throughout the growing season; reduce in winter | Pet-safe |
| 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 Larch | Direct sun (at least 4-6 hours) | Weekly during establishment, less once established | 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 Brake Fern | Medium indirect light (a couple of metres from a window) | Twice weekly in summer; weekly in winter | Pet-safe |
| 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 Fir | Direct sun (at least 4-6 hours) | Weekly during establishment; rainfall-dependent once established | 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 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 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 Star Bromeliad | Bright indirect light (just back from a sunny window) | Every 7–10 days | Pet-safe |
| Silver Tibouchina | Direct sun (at least 4-6 hours) | Water regularly during the growing season to keep the soil moist but not waterlogged; reduce in winter. | Mildly toxic to pets |
| 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 |
| Silvery Glade Fern | Low light (north window or shaded room) | Every 4–6 days in summer, every 8–12 days in winter | Pet-safe |
| Silvery Stelis | Medium indirect light (a couple of metres from a window) | Every 1–2 days; keep medium consistently moist | Pet-safe |
| Simon Bamboo | Direct sun (at least 4-6 hours) | 2–3 times per week in summer, once per week in winter | 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 |
| 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 |
| Sitka Spruce | Direct sun (at least 4-6 hours) | Regular — keep soil consistently moist; very high natural rainfall in native habitat | 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 |
| Slack's Sundew | Direct sun (at least 4-6 hours) | Tray-water continuously during active growth; allow tray to dry slightly during the mild winter rest (does not have a hard dormancy). | 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 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 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-Leaved Sundew | Direct sun (at least 4-6 hours) | Keep substrate consistently moist via a shallow tray; refresh water every few days | Pet-safe |
| Slender-stalked Billbergia | Bright indirect light (just back from a sunny window) | Every 7–14 days | Pet-safe |
| Slim-leaved Biarum | Direct sun (at least 4-6 hours) | Water sparingly in autumn and winter; keep completely dry from late spring through summer dormancy | Toxic to pets |
| 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 |
| 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-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 Pickerelweed | Direct sun (at least 4-6 hours) | Continuously moist to submerged | 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-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 |
| 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 Cane Begonia | Bright indirect light (just back from a sunny window) | When the top 2 cm of compost feel dry | Toxic to pets |
| Smooth Coneflower | Direct sun (at least 4-6 hours) | Weekly during establishment; every 2–3 weeks once established | Pet-safe |
| 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 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 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 Vine | Direct sun (at least 4-6 hours) | Low to moderate; highly drought tolerant once established | Mildly 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 |
| 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 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 |
| 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 |
| Sodiros Monopyle | Low light (north window or shaded room) | Every 4–6 days; keep substrate evenly moist | 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 Shield Fern | Low light (north window or shaded room) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| 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-stem Bulrush | Direct sun (at least 4-6 hours) | Permanently aquatic or waterlogged; plant at 0–60 cm (0–24 in) water depth | 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 |
| Soncoya | Direct sun (at least 4-6 hours) | Twice weekly when young; weekly once established | Mildly toxic to pets |
| 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 |
| 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 |
| Soursop | Direct sun (at least 4-6 hours) | Keep evenly moist; water when the top 2-3 cm of soil dries | Mildly toxic to pets |
| Southern Cattail | Direct sun (at least 4-6 hours) | Continuously moist to submerged | Pet-safe |
| Southern Japanese Hemlock | Bright indirect light (just back from a sunny window) | Weekly during the growing season; reduced in winter | Pet-safe |
| Southern Maidenhair Fern | Bright indirect light (just back from a sunny window) | Frequent — keep soil consistently moist | Pet-safe |
| Southern Marsh Orchid | Direct sun (at least 4-6 hours) | Consistently moist to wet | 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 Fir | Direct sun (at least 4-6 hours) | Every 1–2 weeks during establishment; minimal once mature | Pet-safe |
| 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 |
| 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 |
| Spatterdock | Direct sun (at least 4-6 hours) | Permanently aquatic; plant at 30–120 cm (12–48 in) water depth | Mildly 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 |
| Spencer Mixed sweet pea | Direct sun (at least 4-6 hours) | Every 5–7 days; keep roots evenly moist | Mildly toxic to pets |
| Spencer Waved sweet pea | Direct sun (at least 4-6 hours) | Every 2–4 days in warm weather; every 5–7 days in cool spells | Toxic to pets |
| 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 |
| 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 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 |
| Spindle Palm | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil is dry, roughly every 5-7 days in growth | Mildly toxic to pets |
| Spinulose Lady Fern | Low light (north window or shaded room) | 2–3 times per week; keep consistently moist year-round | 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 |
| 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 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 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 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 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 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-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-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 |
| 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 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 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'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 |
| 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 |
| 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 |
| Star Apple | Direct sun (at least 4-6 hours) | When the top few centimetres of soil dry out, around every 4-7 days in active growth | Mildly 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 |
| 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 |
| 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 |
| Starfruit | Direct sun (at least 4-6 hours) | Every 3-7 days, keeping soil consistently moist; carambola is not drought-tolerant | 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 |
| Stepladder Ginger | Medium indirect light (a couple of metres from a window) | Regular but drought tolerant once established | Mildly toxic to pets |
| Steppe Sage | Direct sun (at least 4-6 hours) | Low — every 10–14 days in summer, minimal in winter | Mildly 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 |
| 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 |
| 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 |
| Stolonifera Palm | Low light (north window or shaded room) | Every 10–14 days in summer, every 2–3 weeks in winter | Pet-safe |
| Stomandra Cape Primrose | Bright indirect light (just back from a sunny window) | Every 7–10 days; keep compost lightly and evenly moist | 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 |
| 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 Guava | Direct sun (at least 4-6 hours) | Every 5-10 days, keeping soil evenly moist while fruiting; tolerates short dry spells once established | Mildly 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 |
| 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 Nickels | Bright indirect light (just back from a sunny window) | when top of mix dries out | Mildly toxic to pets |
| 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 |
| 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 |
| 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 |
| 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 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 |
| Subalpine Fir | Direct sun (at least 4-6 hours) | Regular watering during establishment; naturally sustained by snowmelt and high-altitude precipitation | 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 Apple | Direct sun (at least 4-6 hours) | Water when the top 3-5 cm dries; tolerates drying between waterings | Mildly toxic to pets |
| 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 |
| Summer Snowflake | Bright indirect light (just back from a sunny window) | Regularly during growth (spring); tolerates seasonal dryness once dormant | Toxic to pets |
| 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-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 |
| Super King Ixora | Direct sun (at least 4-6 hours) | Every 2-3 days in active growing season, weekly in winter | Mildly toxic to pets |
| Super King Ixora Red | Direct sun (at least 4-6 hours) | Every 5–7 days; maintain consistent moisture without waterlogging | Pet-safe |
| 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 |
| 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 Rose Mallow | Direct sun (at least 4-6 hours) | Frequently; keep soil moist, tolerates wet conditions | Mildly toxic to pets |
| Swamp Sunflower | Direct sun (at least 4-6 hours) | Consistently moist; water weekly or more in dry periods | Pet-safe |
| 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 Granadilla | Direct sun (at least 4-6 hours) | Every 4-7 days, keeping soil evenly moist during growth and fruiting; avoid both drought and waterlogging | Mildly toxic to pets |
| Sweet Trillium | Low light (north window or shaded room) | Keep soil consistently moist spring through early summer; minimal once dormant | Mildly toxic to pets |
| Sweet violet | Medium indirect light (a couple of metres from a window) | Every 5–7 days; keep evenly 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 |
| 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 |
| 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 |
| Swordleaf Rush | Direct sun (at least 4-6 hours) | Consistently moist to wet soil; tolerates shallow standing water to 5 cm (2 in) | 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 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 |
| Tahitian Gardenia | Direct sun (at least 4-6 hours) | Every 5–7 days when in active growth; every 10–14 days in cooler months | Mildly toxic to pets |
| 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 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 |
| Tamanu | Direct sun (at least 4-6 hours) | Weekly when established; more frequent for young trees | Mildly toxic to pets |
| Tamarillo | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil is dry, about every 4-7 days in warm weather | Toxic to pets |
| 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 |
| 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 |
| Taraw Palm | Direct sun (at least 4-6 hours) | Regularly during establishment; moderately once mature | 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 |
| Tassel Fern | Low light (north window or shaded room) | When the top 2-3 cm of soil is just dry, roughly every 5-7 days in growth | 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 |
| 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 |
| Tectured Schismatoglottis | Low light (north window or shaded room) | Every 7–10 days; adjust based on humidity and temperature | Toxic to pets |
| Teddy Bear Palm | Direct sun (at least 4-6 hours) | Every 3–5 days when established in ground; check containers daily in summer | Pet-safe |
| 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 |
| Terap | Direct sun (at least 4-6 hours) | Every 3–5 days when young; established trees every 7–10 days | Mildly toxic to pets |
| Tessellated Vanda | Direct sun (at least 4-6 hours) | Daily in heat; every 2-3 days in cool, low-light spells | Pet-safe |
| Tetragona Aurea Hinoki Cypress | Direct sun (at least 4-6 hours) | Every 5-7 days when young, then when the top few cm of soil dry | Mildly toxic to pets |
| 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 Sage | Direct sun (at least 4-6 hours) | Moderate — water once or twice weekly in the growing season | 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 |
| 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 |
| 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 |
| Thistle Sage | Direct sun (at least 4-6 hours) | Very infrequent — once established, monthly or less in summer | 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 Bamboo | Direct sun (at least 4-6 hours) | 2-3 times per week during establishment and growing season; drought-tolerant once established | 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 |
| 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-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-Coloured Vanda | Direct sun (at least 4-6 hours) | Daily in warm growth; every 2-3 days when cool and dim | Pet-safe |
| Three-leaf Licuala | Medium indirect light (a couple of metres from a window) | Every 5–7 days; maintain consistent soil moisture | 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 |
| Three-yoked Sage | Direct sun (at least 4-6 hours) | Low — every 10–14 days during active growth; minimal in winter | Mildly 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 erecta | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, roughly every 4-7 days in growth | Mildly toxic to pets |
| 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 |
| 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 |
| 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 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 |
| 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 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 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 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 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 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 |
| 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 |
| 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 |
| Tommy Atkins Mango | Direct sun (at least 4-6 hours) | Water when the top 3-5 cm of soil dries in growth; withhold before flowering | Mildly 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 Fly Bush | Direct sun (at least 4-6 hours) | Keep substrate evenly moist; water every 2–4 days with pure water only | Pet-safe |
| Toothed Nemesia | Direct sun (at least 4-6 hours) | Water regularly to keep compost evenly moist | Mildly toxic to pets |
| 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 |
| 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 |
| 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 '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 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 |
| Transparent-Leaf Peperomia | Bright indirect light (just back from a sunny window) | Every 2–3 weeks (allow compost to dry between waterings) | Pet-safe |
| Traveller's Palm | Direct sun (at least 4-6 hours) | Consistently moist during spring and summer; reduced in winter | Pet-safe |
| 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 |
| 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 |
| 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 |
| 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 Almond | Direct sun (at least 4-6 hours) | Keep evenly moist; water when the top few cm dry, roughly every 5-7 days in heat | Mildly 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 Dewy Pine | Direct sun (at least 4-6 hours) | Keep medium wet to moist at all times; tray method with 1–2 cm water | 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 |
| Truncated Gongora | Bright indirect light (just back from a sunny window) | Abundantly during growth; reduced but never dry in winter | Pet-safe |
| 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 |
| 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 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 |
| Tunbridge Filmy Fern | Low light (north window or shaded room) | Continuously moist — never allow fronds to dry; mist 2–3 times daily or maintain in an enclosed humid environment | 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 |
| Tweedie's Lipstick Plant | Bright indirect light (just back from a sunny window) | When top 2–3 cm of compost dry out | 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 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 |
| 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-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 Air Plant | Bright indirect light (just back from a sunny window) | Twice weekly in summer, once weekly in winter | 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 |
| Typhonodorum lindleyanum | Direct sun (at least 4-6 hours) | Permanently submerged or saturated; never let it dry | Toxic to pets |
| Ugni | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, about every 5-7 days | Mildly 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 |
| Unbranched Bur-reed | Direct sun (at least 4-6 hours) | Permanently aquatic or waterlogged; tolerates 0–60 cm (0–24 in) water depth | 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 European Hornbeam | Direct sun (at least 4-6 hours) | Moderate; water regularly for first 2–3 seasons; rainfall-dependent once established | Pet-safe |
| Upright Nidularium | Bright indirect light (just back from a sunny window) | Weekly during growing season; reduce in winter | Pet-safe |
| 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 |
| Utricularia subulata | Direct sun (at least 4-6 hours) | Keep constantly wet to waterlogged; stand in 1-2 cm of water at all times | Mildly toxic to pets |
| Uvaia | Direct sun (at least 4-6 hours) | Weekly; keep consistently moist during establishment, more drought-tolerant once mature | 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 |
| 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 |
| Vanda 'Fuchs Delight' | Direct sun (at least 4-6 hours) | Daily in warm growth; every 2-3 days when cool or low-light | Pet-safe |
| Vanda 'Miss Joaquim' | Direct sun (at least 4-6 hours) | Daily in warm, bright conditions; every 2-3 days if cooler | Pet-safe |
| Vanda 'Robert's Delight' | Direct sun (at least 4-6 hours) | Daily in warm growth; every 2-3 days in cool or dormant spells | Pet-safe |
| Vanda Orchid | Direct sun (at least 4-6 hours) | Daily in warm months; 2-3x weekly in winter | 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 |
| 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-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 Brunnera | Low light (north window or shaded room) | Keep soil reliably moist; water when the top 2-3 cm dries, roughly every 4-6 days in warm spells | Mildly 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 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 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-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 |
| 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 |
| 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 |
| Veitch Fir | Direct sun (at least 4-6 hours) | Weekly during establishment; moderate once mature | Pet-safe |
| Veitchia Arecina | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil is dry, roughly every 5-9 days in heat | Pet-safe |
| Velvet bean | Direct sun (at least 4-6 hours) | Water regularly to keep soil moist, roughly every 4–7 days; tolerates brief dry spells once established | Mildly toxic to pets |
| 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 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 Tamarind | Direct sun (at least 4-6 hours) | When the top 2-4 cm of soil is dry, roughly every 4-7 days in growth | Mildly toxic to pets |
| Venus Flytrap | Direct sun (at least 4-6 hours) | Keep the medium permanently wet — stand the pot in 1-2 cm of rain or distilled water and top up so it never dries | Pet-safe |
| Venus Flytrap 'Dente' | Direct sun (at least 4-6 hours) | Keep the soil constantly wet; top up the tray as it dries, near-daily in summer | Pet-safe |
| Venus Maidenhair Fern | Bright indirect light (just back from a sunny window) | Keep constantly moist, often every 2-3 days | Pet-safe |
| Veronica beccabunga | Direct sun (at least 4-6 hours) | Keep permanently wet; never let the rootzone dry out | Mildly toxic to pets |
| Victoria amazonica | Direct sun (at least 4-6 hours) | Permanently submerged in warm, still water 0.5-1 m+ deep | Mildly toxic to pets |
| Victoria cruziana | Direct sun (at least 4-6 hours) | Permanently submerged in warm, still water 0.5-1 m+ deep | Mildly toxic to pets |
| 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 |
| 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 |
| 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 |
| 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 |
| Walking Fern | Low light (north window or shaded room) | Keep substrate evenly moist at all times; check every 3-5 days and never let it dry fully | Pet-safe |
| 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 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 |
| 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 |
| Wallis's Dragon Orchid | Medium indirect light (a couple of metres from a window) | Every 2–3 days; medium kept continuously moist | Pet-safe |
| Wampee | Direct sun (at least 4-6 hours) | Water deeply every 5-10 days; keep evenly moist when fruiting | Mildly toxic to pets |
| 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 |
| Waras' Cryptanthus | Bright indirect light (just back from a sunny window) | Every 7–10 days | Pet-safe |
| Warming's Sinningia | Bright indirect light (just back from a sunny window) | Moderate during active growth; dry during dormancy | 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 |
| Water Apple | Direct sun (at least 4-6 hours) | 2–3 times per week; keep consistently moist | 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 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 Horsetail | Direct sun (at least 4-6 hours) | Submerged or saturated | Mildly toxic to pets |
| Water Speedwell | Direct sun (at least 4-6 hours) | Permanently wet to shallow submersion | 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 |
| 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 |
| Waterwheel Plant | Direct sun (at least 4-6 hours) | Fully submerged aquatic — water IS the growing medium | 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-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 Jambu | Direct sun (at least 4-6 hours) | Regular deep watering every 4-7 days; more during fruiting and dry heat | Mildly 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 |
| Weaver's Bamboo | Direct sun (at least 4-6 hours) | Deeply 2-3 times per week; daily in hot weather | 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 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 Nootka Cypress | Direct sun (at least 4-6 hours) | Regularly during establishment; moderate once mature | 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 |
| 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 |
| 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 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 |
| 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 |
| Western Arborvitae Zebrina | Direct sun (at least 4-6 hours) | Deeply every 5-7 days the first two years, then during dry spells | Mildly 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 Red Cedar | Direct sun (at least 4-6 hours) | Regular — water deeply once or twice a week until established; drought-sensitive | 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 Sword Fern | Low light (north window or shaded room) | When the top 3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| 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 |
| 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 |
| 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 |
| 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 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 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 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 dipladenia | Direct sun (at least 4-6 hours) | Every 5–7 days during active growth; reduce to every 10–14 days in winter. | Mildly toxic to pets |
| 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 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 Grand Lotus | Direct sun (at least 4-6 hours) | Aquatic — permanently in still or slow-moving water | Mildly toxic to pets |
| White Ixora | Direct sun (at least 4-6 hours) | 2-3 times per week in summer, weekly in winter | Mildly toxic to pets |
| 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 mountain heather | Direct sun (at least 4-6 hours) | Consistently moist during the growing season; reduce in winter | Pet-safe |
| White Mussaenda | Direct sun (at least 4-6 hours) | Every 2–3 days during active growth; reduce in cooler months | Mildly 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 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 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 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-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-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-topped Pitcher Plant | Direct sun (at least 4-6 hours) | Keep constantly moist to wet — sit pots in 2–5 cm of standing water during the growing season | Mildly toxic to pets |
| 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 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-Bract Heliconia | Direct sun (at least 4-6 hours) | Regularly during growing season; withhold water for 4–6 weeks in autumn/winter to trigger flowering | Mildly toxic to pets |
| Wide-leaf Ceratozamia | Medium indirect light (a couple of metres from a window) | Every 2–3 weeks | 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 Garlic Vine | Direct sun (at least 4-6 hours) | Every 5–7 days during the growing season; reduce in cooler months | Mildly toxic to pets |
| Wild maracuja | Direct sun (at least 4-6 hours) | Every 7–14 days; drought-tolerant once established | Mildly toxic to pets |
| Wild Pineapple | Direct sun (at least 4-6 hours) | Every 7–14 days; very drought-tolerant once established | Mildly toxic to pets |
| 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 |
| 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 Oak | Direct sun (at least 4-6 hours) | Moderate; water weekly when young; tolerates periodic flooding once established | Mildly toxic to pets |
| Wilson's Filmy Fern | Low light (north window or shaded room) | Continuously moist — fronds must never dry; maintain in a sealed humid enclosure with permanent moisture at the rhizomes | Mildly toxic to pets |
| 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 Cups Babiana | Direct sun (at least 4-6 hours) | Water during active growth (autumn to spring); cease completely once foliage yellows | Mildly toxic to pets |
| 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 |
| Wine Palm | Direct sun (at least 4-6 hours) | Water deeply 1–2 times per week in warm weather, less frequently in cool periods | Toxic to pets |
| Winged Kacip Fatimah | Low light (north window or shaded room) | Water when the top 1–2 cm of medium begins to dry; approximately every 4–7 days depending on temperature and humidity | Mildly 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 |
| 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 |
| Wood Club-rush | Medium indirect light (a couple of metres from a window) | Permanently moist to wet; tolerates shallow standing water | Pet-safe |
| 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 Jerusalem Sage | Direct sun (at least 4-6 hours) | Low — once every 2–3 weeks once established; minimal in winter | Mildly toxic to pets |
| Wrinkled Elatostema | Low light (north window or shaded room) | Every 3–5 days; soil should remain consistently moist | Pet-safe |
| 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 |
| 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 Birch | Direct sun (at least 4-6 hours) | Consistently moist; water deeply 1-2 times per week during establishment and in dry spells | Pet-safe |
| Yellow Clintonia | Low light (north window or shaded room) | Twice weekly in dry spells; maintain even soil moisture throughout the growing season | Pet-safe |
| Yellow Episcia | Bright indirect light (just back from a sunny window) | When the top 1–2 cm of soil is dry | Pet-safe |
| 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 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 Jaboticaba | Direct sun (at least 4-6 hours) | Every 2–3 days during establishment; weekly once mature | 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 Mombin | Direct sun (at least 4-6 hours) | Every 7–14 days; highly drought-tolerant when established | Pet-safe |
| 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 Mussaenda | Direct sun (at least 4-6 hours) | Every 7 days during summer; reduce significantly in winter | Mildly toxic to pets |
| Yellow Passion Fruit | Direct sun (at least 4-6 hours) | Regularly, every 3-7 days, keeping soil consistently moist during flowering and fruiting; never let it dry out hard | Mildly toxic to pets |
| Yellow Rattle | Direct sun (at least 4-6 hours) | Rain-fed; no supplemental irrigation needed once sown into a meadow | Mildly toxic to pets |
| 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 Trumpet Vine | Direct sun (at least 4-6 hours) | Every 5–7 days during active growth; reduce in cooler months | 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-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 |
| Yokosca Lady Fern | Low light (north window or shaded room) | Every 2–3 days; keep soil moist to wet | Pet-safe |
| 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 |
| Zahn's Guzmania | Bright indirect light (just back from a sunny window) | Refill cup every 7–10 days; flush monthly | 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 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 '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 |
| 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 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 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 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 |
| 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 |
This list is not hand-picked for looks. It is houseplants whose documented ideal humidity is 50% or higher, drawn from Growli's structured plant-care library so the selection is consistent and checkable. 3559 plants qualify today.
Growli currently lists 3559 plants that meet the criterion (houseplants whose documented ideal humidity is 50% or higher). The list updates as the plant-care library grows; each entry links to a full care guide.
Not necessarily — this list is selected by houseplants whose documented ideal humidity is 50% or higher, not by pet safety. Each plant is tagged with its pet-safety status below, and links to a full ASPCA-sourced pet-safety guide. If you have pets, see the dedicated best pet-safe houseplants list.
Once you have shortlisted a plant, the next questions are watering and soil. These are the guides searched most this season: