| Acer capillipes | Bright indirect light (just back from a sunny window) | Water deeply weekly while establishing; supplement in summer droughts | Pet-safe |
| Acer griseum | Direct sun (at least 4-6 hours) | Water deeply weekly while establishing; supplement in summer droughts | Pet-safe |
| Acer japonicum 'Aconitifolium' | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water deeply in dry spells | Pet-safe |
| Acer palmatum 'Atropurpureum' | Bright indirect light (just back from a sunny window) | Keep evenly moist; water deeply through dry weather | Pet-safe |
| Acer palmatum 'Butterfly' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry; keep evenly moist, more often in pots and heat | Pet-safe |
| Acer palmatum 'Dissectum' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry; keep evenly moist, more often in pots and heat | Pet-safe |
| Acer palmatum 'Garnet' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry; keep evenly moist, more often in pots and heat | Pet-safe |
| Acer palmatum 'Orangeola' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry; keep evenly moist, more often in containers and heat | Pet-safe |
| Acer rubrum 'Autumn Blaze' | Direct sun (at least 4-6 hours) | Weekly while establishing; deep watering in droughts thereafter | Pet-safe |
| Acer rubrum 'October Glory' | Direct sun (at least 4-6 hours) | Weekly while establishing; deep watering in dry spells thereafter | Pet-safe |
| Adagio Maiden Grass | Direct sun (at least 4-6 hours) | Weekly for the first season; every 2–3 weeks once established | Pet-safe |
| Adolphe Audusson Camellia | Bright indirect light (just back from a sunny window) | Every 5-7 days in the growing season; keep consistently moist but not waterlogged | Pet-safe |
| African Baobab | Direct sun (at least 4-6 hours) | Every 1–2 weeks in summer; once a month or less in winter | Pet-safe |
| African Chain Fern | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil feels barely moist, roughly every 5-8 days in growing season | Pet-safe |
| African Tamarisk | Direct sun (at least 4-6 hours) | Low once established; moderate during establishment | Pet-safe |
| Agnes Rose | Direct sun (at least 4-6 hours) | Deep watering once a week, more in drought or first season | Pet-safe |
| Albert's Gold tree heath | Direct sun (at least 4-6 hours) | Weekly during establishment; every 2–3 weeks in summer once established | Pet-safe |
| Alcantarea imperialis | Bright indirect light (just back from a sunny window) | Keep the central tank filled; water the mix when its top 4-5 cm is dry | Pet-safe |
| Alcantarea odorata | Bright indirect light (just back from a sunny window) | Keep the central tank filled; water the mix when its top 4-5 cm is dry | Pet-safe |
| Algerian Fir | Direct sun (at least 4-6 hours) | Low to moderate; highly drought-tolerant once established | Pet-safe |
| Alphonse Karr Bamboo | Direct sun (at least 4-6 hours) | Regularly during summer, approximately every 5–7 days; reduce in cooler months as growth slows | Pet-safe |
| Altissimo Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly in the first season; established plants when the top 5 cm of soil is dry | 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 |
| Amazon Moonflower Cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of substrate is dry, roughly every 7-10 days in the growing season; every 2-3 weeks in a cooler rest period | Pet-safe |
| Ambarella | Direct sun (at least 4-6 hours) | Every 7–10 days; drought-tolerant when established | Pet-safe |
| America Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly while establishing; mature plants when the top few centimetres of soil dry out | Pet-safe |
| American Basswood | Bright indirect light (just back from a sunny window) | Weekly during establishment; less once mature | Pet-safe |
| American Beachgrass | Direct sun (at least 4-6 hours) | Low; drought-tolerant once established | Pet-safe |
| American Dunegrass | Direct sun (at least 4-6 hours) | Low; drought-tolerant | Pet-safe |
| American Royal Fern | Medium indirect light (a couple of metres from a window) | Twice weekly or more; keep consistently moist | Pet-safe |
| American White Water Lily | Direct sun (at least 4-6 hours) | Permanently aquatic — crown submerged 15–60 cm (6–24 in) below water surface | Pet-safe |
| Ananas lucidus | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in growth | Pet-safe |
| Anise-scented Sage | Bright indirect light (just back from a sunny window) | Regular throughout the growing season | Pet-safe |
| 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 |
| Appalachian Blazing Star | Direct sun (at least 4-6 hours) | Every 2 weeks during establishment; essentially rain-fed once mature | 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 |
| 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 |
| Arikury Palm | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 7-14 days | Pet-safe |
| Aromatic Aster | Direct sun (at least 4-6 hours) | Water to establish, then rarely; very drought-tolerant | Pet-safe |
| Arrowwood Viburnum | Direct sun (at least 4-6 hours) | Weekly when young; established plants tolerate both moist and occasionally dry soil | Pet-safe |
| 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 |
| Assai Palm | Direct sun (at least 4-6 hours) | Keep consistently moist; water every 3-5 days in warm weather | Pet-safe |
| Assam Fan Palm | Direct sun (at least 4-6 hours) | Weekly in growing season, every 2–3 weeks in winter | Pet-safe |
| 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 | Direct sun (at least 4-6 hours) | Water when the top 4-5 cm of soil dries out, roughly every 10-14 days in active growth | Pet-safe |
| 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 |
| Autumn Brilliance serviceberry | Direct sun (at least 4-6 hours) | Weekly during establishment; moderate once established | Pet-safe |
| Autumn heath | Direct sun (at least 4-6 hours) | Fortnightly during establishment; drought-tolerant once established | Pet-safe |
| Avalanche Feather Reed Grass | Direct sun (at least 4-6 hours) | When the top few centimetres of soil dry, around weekly; tolerant of occasional wet ground | Pet-safe |
| Azores Jasmine | Direct sun (at least 4-6 hours) | Every 5–7 days in summer; every 10–14 days in winter | Pet-safe |
| Baby Love Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly in the growing season, more in heat or in pots | Pet-safe |
| Baby's Tears | Bright indirect light (just back from a sunny window) | Every 2-4 days; keep soil consistently moist | Pet-safe |
| Bailey Palm | Direct sun (at least 4-6 hours) | When the top 6-10 cm of soil is dry, roughly every 10-14 days in the growing season; every 4-6 weeks in winter | Pet-safe |
| Balbis Banana | Direct sun (at least 4-6 hours) | Keep soil consistently moist; water every 3-5 days in summer | Pet-safe |
| Ballerina Rose | Direct sun (at least 4-6 hours) | Deep watering once or twice weekly | Pet-safe |
| 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 |
| Bamboo Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (1 inch) of soil is dry, roughly every 7-10 days | Pet-safe |
| bamburanta | Medium indirect light (a couple of metres from a window) | Every 5–7 days in growing season; every 10–14 days in winter | Pet-safe |
| 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 |
| Barrelier's Sage | Direct sun (at least 4-6 hours) | Weekly to establish, then fortnightly | Pet-safe |
| Bear Tupelo | Bright indirect light (just back from a sunny window) | Regularly; keep consistently moist | Pet-safe |
| Beaucarnea Gracilis | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 2-3 weeks in summer and monthly or less in winter | Pet-safe |
| Beaucarnea Stricta | Direct sun (at least 4-6 hours) | When the soil is fully dry, roughly every 2-3 weeks in summer and much less in winter | Pet-safe |
| Beautiful Fuchsia | Bright indirect light (just back from a sunny window) | Water freely in growth; reduce in winter | Pet-safe |
| Beavertail Cactus | Direct sun (at least 4-6 hours) | Very sparingly when soil is bone dry, roughly every 3-4 weeks in summer; keep dry in winter | Pet-safe |
| Belize Sage | Bright indirect light (just back from a sunny window) | Twice weekly during active growth | Pet-safe |
| 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 |
| Besom heath | Direct sun (at least 4-6 hours) | Weekly during establishment; largely self-sufficient once established | Pet-safe |
| Bigcone Douglas Fir | Direct sun (at least 4-6 hours) | Every 2–4 weeks once established | Pet-safe |
| Bigleaf Magnolia | Bright indirect light (just back from a sunny window) | Deeply twice weekly during establishment; weekly once established in dry periods | Pet-safe |
| Birchleaf Spirea | Direct sun (at least 4-6 hours) | Weekly until established; occasional watering in drought once mature | 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 Spruce | Direct sun (at least 4-6 hours) | Every 7-10 days while establishing; deep watering when the top 5 cm of soil is dry | Pet-safe |
| Bird's Nest Spruce | Direct sun (at least 4-6 hours) | Moderate; water during dry spells in the first two years, then largely self-sufficient | Pet-safe |
| 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 |
| Bisset's Bamboo | Direct sun (at least 4-6 hours) | Weekly during the growing season; every 2–3 weeks when dormant | Pet-safe |
| Black Ash | Direct sun (at least 4-6 hours) | High; requires consistently moist to wet soil | Pet-safe |
| Black Bamboo | Direct sun (at least 4-6 hours) | Weekly when establishing; reduce once established | Pet-safe |
| Black Lily Magnolia | Bright indirect light (just back from a sunny window) | Weekly during the growing season; reduce in winter | Pet-safe |
| Black 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-Eyed Susan Vine | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in the growing season | Pet-safe |
| Blackhaw Viburnum | Direct sun (at least 4-6 hours) | Weekly while establishing; established plants need water only in extended drought | 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 |
| Blanc Double de Coubert Rose | Direct sun (at least 4-6 hours) | Weekly while establishing; drought-tolerant thereafter | Pet-safe |
| Blaze Improved Rose | Direct sun (at least 4-6 hours) | Deeply once or twice a week in the growing season, more during heat | Pet-safe |
| Blood Banana | Direct sun (at least 4-6 hours) | Roughly weekly in active growth; every 10-14 days in winter | Pet-safe |
| Bloodgood Japanese Maple | Bright indirect light (just back from a sunny window) | When the top 3–5 cm of soil is dry, roughly every 5–7 days in summer; weekly to fortnightly in autumn and spring | Pet-safe |
| Blue Anise Sage | Bright indirect light (just back from a sunny window) | Weekly | Pet-safe |
| Blue Cereus | Direct sun (at least 4-6 hours) | Every 14–21 days in summer; every 4–6 weeks in winter | Pet-safe |
| Blue Columnar Cactus | Direct sun (at least 4-6 hours) | When the top half of soil is dry, roughly every 10-14 days in summer; every 4-6 weeks in winter | Pet-safe |
| Blue Giant Sequoia | Direct sun (at least 4-6 hours) | Deeply weekly for 3–5 years during establishment | Pet-safe |
| Blue Latan Palm | Direct sun (at least 4-6 hours) | Every 7–10 days in growing season; less in winter | Pet-safe |
| Blue Latan Palm | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in summer | 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 |
| 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 |
| Bonica Rose | Direct sun (at least 4-6 hours) | Deep watering once or twice weekly | Pet-safe |
| Borden's Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer; every 3–4 weeks in winter | Pet-safe |
| Border Forsythia | Direct sun (at least 4-6 hours) | Weekly during the first year, then only in prolonged drought | Pet-safe |
| Boscobel Rose | Direct sun (at least 4-6 hours) | Deeply once or twice a week in the growing season; more in heat or sandy soil | Pet-safe |
| Bougainvillea 'Barbara Karst' | Direct sun (at least 4-6 hours) | Deeply but infrequently, only when the top 5 cm of soil is dry, roughly every 7-14 days | Pet-safe |
| Bougainvillea 'Raspberry Ice' | Direct sun (at least 4-6 hours) | When the top 5 cm of soil is dry, roughly every 5-10 days | Pet-safe |
| Bougainvillea 'San Diego Red' | Direct sun (at least 4-6 hours) | Deep soak only when the top 5 cm of soil dries, about every 7-14 days | Pet-safe |
| Bracted Aechmea | Bright indirect light (just back from a sunny window) | Every 10–14 days | Pet-safe |
| Brazilian Plume | Bright indirect light (just back from a sunny window) | Regularly — keep soil consistently moist but never waterlogged | Pet-safe |
| 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 |
| Brewer Spruce | Direct sun (at least 4-6 hours) | Moderate — water regularly during establishment; tolerates summer drought once established | Pet-safe |
| Bridal Wreath Spirea | Direct sun (at least 4-6 hours) | Water when the top 5 cm of soil is dry, about weekly while establishing | Pet-safe |
| Bridal Wreath Spirea | Direct sun (at least 4-6 hours) | Every 7-10 days during dry spells; established plants are drought-tolerant | Pet-safe |
| Brilliantissima red chokeberry | Direct sun (at least 4-6 hours) | Weekly during establishment; moderate once established | Pet-safe |
| Bristol Ruby Weigela | Direct sun (at least 4-6 hours) | Every 7-10 days during dry spells; established plants cope with moderate drought | Pet-safe |
| Broad-Leaved Lime | Bright indirect light (just back from a sunny window) | Weekly during establishment; supplemental watering in prolonged drought | Pet-safe |
| Broad-leaved Pondweed | Direct sun (at least 4-6 hours) | Fully submerged aquatic; grows in 30 cm to 150 cm of water | 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 |
| Broom Palm | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil is dry, roughly every 7-14 days in the growing season | Pet-safe |
| Broomsedge Bluestem | Direct sun (at least 4-6 hours) | Rainfall sufficient; no supplemental irrigation needed once established | Pet-safe |
| Brush Cherry | Bright indirect light (just back from a sunny window) | Weekly when young; every 10–14 days once established | Pet-safe |
| Buddha's Belly Bamboo | Direct sun (at least 4-6 hours) | 2-3 times per week in warm seasons; reduce in winter | Pet-safe |
| Buff Beauty Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly in the growing season; more in heat or against a warm wall | Pet-safe |
| Bunny ears cactus | Direct sun (at least 4-6 hours) | When the compost is fully dry, roughly every 2-3 weeks in spring and summer | Pet-safe |
| Burkwood Viburnum | Direct sun (at least 4-6 hours) | Water when the top 5 cm of soil dries, roughly weekly during establishment | Pet-safe |
| Burnet Rose | Direct sun (at least 4-6 hours) | Weekly during establishment; rarely once mature | Pet-safe |
| Burton's Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; reduce to every 3–4 weeks in winter | Pet-safe |
| Bush Hoya | Bright indirect light (just back from a sunny window) | Roughly weekly in summer; every 10-14 days in winter | Pet-safe |
| Cabada Palm | Direct sun (at least 4-6 hours) | Every 3–5 days when young; drought-tolerant once established | 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 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 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 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 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 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 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 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 |
| Calico Aster | Bright indirect light (just back from a sunny window) | Water to establish, then occasionally; tolerates dry soil | Pet-safe |
| California Giant Chain Fern | Medium indirect light (a couple of metres from a window) | Every 5–7 days; keep soil consistently moist but not waterlogged | Pet-safe |
| Callicarpa 'Pearl Glam' | Direct sun (at least 4-6 hours) | Water weekly during the first season; established plants are fairly drought-tolerant and need water mainly in dry spells | Pet-safe |
| Camellia 'Alba Plena' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, every 7-10 days during active growth | Pet-safe |
| Camellia 'Anticipation' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days during the growing season | Pet-safe |
| Camellia 'Bob Hope' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days during the growing season | Pet-safe |
| Camellia 'Brushfield's Yellow' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost or soil is dry, roughly every 5-7 days during active growth | Pet-safe |
| Camellia 'Debbie' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Camellia 'Dixie Knight' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil or compost is dry, roughly every 5-7 days in the growing season | Pet-safe |
| Camellia 'Donation' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry; keep evenly moist in late summer | Pet-safe |
| Camellia 'Elegans' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days during growth | Pet-safe |
| Camellia 'Hagoromo' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost or soil is dry, roughly every 5-7 days during active growth | Pet-safe |
| Camellia 'J.C. Williams' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days during the growing season | Pet-safe |
| Camellia 'Jury's Yellow' | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water deeply once or twice weekly in summer, especially during bud set | Pet-safe |
| Camellia 'Jury's Yellow' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days during active growth | Pet-safe |
| Camellia 'Kramer's Supreme' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days during active growth | Pet-safe |
| Camellia 'Midnight Magic' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 7-10 days during active growth | Pet-safe |
| Camellia 'Mine-no-Yuki' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, every 7-10 days through the growing season | Pet-safe |
| Camellia 'Nuccio's Gem' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 7-10 days in active growth | Pet-safe |
| Camellia 'Spring Festival' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in the growing season | Pet-safe |
| Camellia 'Water Lily' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil or compost is dry, roughly every 5-7 days during the growing season | Pet-safe |
| Camellia 'Yuletide' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days during active growth | Pet-safe |
| Campbell's Magnolia | Direct sun (at least 4-6 hours) | Every 7-10 days during the first three growing seasons; established trees need watering only during prolonged summer drought | 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 |
| Canary creeper | Bright indirect light (just back from a sunny window) | Water regularly to keep soil evenly moist, roughly every 5–7 days | Pet-safe |
| Canary Island Date Palm | Direct sun (at least 4-6 hours) | Every 7-10 days in summer; roughly every 2-3 weeks in winter | Pet-safe |
| Candelabra Sage | Direct sun (at least 4-6 hours) | Every 10-14 days in the growing season | Pet-safe |
| Carding Mill Rose | Direct sun (at least 4-6 hours) | Deeply once or twice a week through the growing season, more in heat | Pet-safe |
| Carefree Wonder Rose | Direct sun (at least 4-6 hours) | Deep soak once or twice a week depending on heat | Pet-safe |
| Caribbean Royal Palm | Direct sun (at least 4-6 hours) | Twice weekly when young; established trees weekly or as needed | Pet-safe |
| Caribbean Royal Palm | Direct sun (at least 4-6 hours) | When the top 4-6 cm of soil is dry, roughly every 7-10 days in the growing season; every 14-21 days in drier winter months | Pet-safe |
| Carnarvon Fan Palm | Direct sun (at least 4-6 hours) | Weekly during active growth; every 2–3 weeks when established | Pet-safe |
| Carnauba Wax Palm | Direct sun (at least 4-6 hours) | When the top 5-10 cm of soil is dry, roughly every 10-14 days in the growing season; every 3-5 weeks in winter | Pet-safe |
| Carob | Direct sun (at least 4-6 hours) | When soil is dry well below the surface, every 1-3 weeks once established | 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 Queen Lotus | Direct sun (at least 4-6 hours) | Permanently submerged; maintain 5–15 cm (2–6 in) of water over the soil surface for established plants | Pet-safe |
| Carpentaria Palm | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in warm weather | Pet-safe |
| 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 |
| Cat Palm | Bright indirect light (just back from a sunny window) | Keep consistently moist | Pet-safe |
| 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 |
| Cecile Brunner Climbing Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly while young; established plants are fairly drought-tolerant and need water mainly in dry spells | Pet-safe |
| 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 |
| Celosia (cockscomb) | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in summer | Pet-safe |
| Central Australian Cabbage Palm | Direct sun (at least 4-6 hours) | Sparingly; allow soil to dry between waterings | Pet-safe |
| Central Australian Cabbage Palm | Direct sun (at least 4-6 hours) | Water deeply every 14-21 days; highly drought-tolerant once established | Pet-safe |
| Ceropegia woodii f. variegata | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days in growth | Pet-safe |
| Chagual | Direct sun (at least 4-6 hours) | every 7–14 days in summer, rarely in winter | Pet-safe |
| Chamaedorea Hooperiana | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Chamaedorea Microspadix | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Chamaerops Humilis 'Vulcano' | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil is dry, every 7-14 days in summer | Pet-safe |
| Chamaerops Humilis Cerifera | Direct sun (at least 4-6 hours) | When the top few cm of soil are dry; drought-tolerant once established | Pet-safe |
| Charlotte Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly in growth; more in heat | Pet-safe |
| Cherokee Chief Dogwood | Bright indirect light (just back from a sunny window) | Weekly deep watering; more in summer drought | Pet-safe |
| 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 |
| Chilean Bamboo | Bright indirect light (just back from a sunny window) | Weekly during establishment; twice weekly in dry summer heat | Pet-safe |
| Chinese Arborvitae | Direct sun (at least 4-6 hours) | Moderate — water regularly until established; drought-tolerant once established | Pet-safe |
| 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 Fan Palm | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil dries out, roughly every 7-14 days | Pet-safe |
| Chinese Hemlock | Bright indirect light (just back from a sunny window) | Every 1–2 weeks when young; every 2–3 weeks once established | Pet-safe |
| Chinese Larch | Direct sun (at least 4-6 hours) | Regular during establishment and growing season; reduced in dormancy | Pet-safe |
| 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 Tupelo | Bright indirect light (just back from a sunny window) | Regularly during establishment; once or twice a week in dry spells | Pet-safe |
| Chinese Weeping Cypress | Direct sun (at least 4-6 hours) | Regular during establishment; drought-tolerant once mature | 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 |
| Chusan Palm | Bright indirect light (just back from a sunny window) | Weekly in summer, monthly in winter | Pet-safe |
| Cilician Fir | Direct sun (at least 4-6 hours) | Moderate; drought-tolerant once established | Pet-safe |
| Cinco de Mayo Rose | Direct sun (at least 4-6 hours) | Deeply once or twice a week through the growing season, more in heat | Pet-safe |
| Cinnamon Fern | Medium indirect light (a couple of metres from a window) | 2-3 times per week; keep consistently moist | Pet-safe |
| Cissus Discolor | Bright indirect light (just back from a sunny window) | When the top 2 cm of soil is dry, about every 4-7 days in warmth | Pet-safe |
| Cissus 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 |
| Clara Fan Palm | Direct sun (at least 4-6 hours) | When the top 5 cm of soil is completely dry, roughly every 14-21 days in summer | Pet-safe |
| Cleistocactus baumannii | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, roughly weekly in summer; sparingly in winter | Pet-safe |
| Cliff Date Palm | Direct sun (at least 4-6 hours) | Deeply every 7-10 days while establishing, then moderate | Pet-safe |
| Cliff Date Palm | Direct sun (at least 4-6 hours) | Water when the top 4-5 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Climbing Chamaedorea | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Climbing Iceberg Rose | Direct sun (at least 4-6 hours) | Deeply once or twice a week in the growing season, more during heat | Pet-safe |
| Clumping Bamboo | Bright indirect light (just back from a sunny window) | Twice to three times per week during establishment; weekly once established | Pet-safe |
| Clumping Blue Bamboo | Bright indirect light (just back from a sunny window) | Consistently moist throughout the growing season; water every 5–7 days or as needed to keep soil from drying out | Pet-safe |
| 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 |
| 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 |
| 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 |
| Columnar Douglas Fir | Direct sun (at least 4-6 hours) | Moderate during establishment; reduced once established | Pet-safe |
| Common Bamboo | Direct sun (at least 4-6 hours) | Deeply 2-3 times per week; daily in hot or dry conditions | Pet-safe |
| 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 Jasmine | Direct sun (at least 4-6 hours) | Water regularly while establishing and in dry spells; water when the top few cm of soil dries | Pet-safe |
| Common Rush | Direct sun (at least 4-6 hours) | Permanently wet or standing water to 15 cm (6 in) deep | Pet-safe |
| Compact Japanese Umbrella Pine | Bright indirect light (just back from a sunny window) | Weekly during growing season; reduce in winter | Pet-safe |
| Compact Plume Japanese Cedar | Bright indirect light (just back from a sunny window) | Regularly throughout the growing season; reduce slightly in winter | Pet-safe |
| Compass Plant | Direct sun (at least 4-6 hours) | Every 2-4 weeks once established | Pet-safe |
| Compassion Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly when young; established plants when the top 5 cm of soil is dry | Pet-safe |
| Constance Spry Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly while establishing; mature plants when the top few centimetres of soil dry | Pet-safe |
| Cook Pine | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Coral Bark Japanese Maple 'Sango-kaku' | Bright indirect light (just back from a sunny window) | Once or twice weekly through the growing season | Pet-safe |
| Coral Bark Maple | Bright indirect light (just back from a sunny window) | When the top 3–5 cm of soil is dry, roughly every 5–7 days in summer; reduce in winter | Pet-safe |
| Cork-Stemmed Passionflower | Direct sun (at least 4-6 hours) | Once or twice a week until established; less once mature | Pet-safe |
| Cornelia Rose | Direct sun (at least 4-6 hours) | Deeply once or twice a week in the growing season, increasing in heat | Pet-safe |
| Cornus kousa 'Miss Satomi' | Direct sun (at least 4-6 hours) | Water deeply weekly while establishing; supplement in dry spells | Pet-safe |
| Cosmos sulphureus 'Klondike' | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 7-10 days once established | 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 Rica Bamboo Palm | Medium indirect light (a couple of metres from a window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in active growth | Pet-safe |
| Costa Rica Pitaya | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 7-10 days in summer; every 2-4 weeks in winter | Pet-safe |
| Crataegus laevigata 'Paul's Scarlet' | Direct sun (at least 4-6 hours) | Water weekly for the first two seasons; established trees are very drought-tolerant | Pet-safe |
| Crataegus persimilis 'Prunifolia' | Direct sun (at least 4-6 hours) | Water weekly for the first two seasons; established trees are drought-tolerant | Pet-safe |
| Creeping Sage | Bright indirect light (just back from a sunny window) | Weekly during the growing season | Pet-safe |
| Cretan Brake Fern | Bright indirect light (just back from a sunny window) | Keep evenly moist; water when the top third of the soil feels dry, roughly every 4-7 days in growth | Pet-safe |
| Cretan Date Palm | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 10-14 days in summer | Pet-safe |
| Crimean Linden | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 2–3 weeks in dry summers once mature | Pet-safe |
| Crimson Water Lily | Direct sun (at least 4-6 hours) | Permanently aquatic — crown submerged 15–50 cm (6–20 in) below water surface | Pet-safe |
| 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 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 |
| 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 |
| 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 Petticoat Palm | Direct sun (at least 4-6 hours) | When the top 5-8 cm of soil is dry, roughly every 10-14 days in summer; every 3-5 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 |
| Cucumber Tree Magnolia | Bright indirect light (just back from a sunny window) | Every 2–3 weeks when established; more frequently during active growth in summer | Pet-safe |
| Curiosity Plant | Direct sun (at least 4-6 hours) | When the mix is dry, about every 2-3 weeks in summer; minimal in winter | Pet-safe |
| Curly Kentia Palm | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Curly Sentry Palm | Bright indirect light (just back from a sunny window) | Every 7–10 days in summer; every 14–21 days in winter | Pet-safe |
| Custard Biriba | Direct sun (at least 4-6 hours) | 2–3 times per week in growing season; reduce in cooler months | Pet-safe |
| Cutleaf coneflower | Direct sun (at least 4-6 hours) | Twice weekly during establishment; weekly or more in dry spells once established | Pet-safe |
| Dahurian Larch | Direct sun (at least 4-6 hours) | Weekly during establishment; minimal once established | Pet-safe |
| Dainty Bess Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly during growth | 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 |
| Darcey Bussell Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly in growth; container plants more often | Pet-safe |
| 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 |
| Desert Bromeliad | Direct sun (at least 4-6 hours) | every 14–21 days in summer, rarely in winter | Pet-safe |
| Deutzia 'Elegantissima' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days during the growing season | Pet-safe |
| Deutzia 'Nikko' | Direct sun (at least 4-6 hours) | Weekly in the first season; during dry spells once established | Pet-safe |
| Deutzia gracilis | Direct sun (at least 4-6 hours) | Weekly in the first year, then during dry spells | Pet-safe |
| Deutzia scabra 'Plena' | Direct sun (at least 4-6 hours) | Weekly while establishing, then in dry spells | Pet-safe |
| Deutzia x elegantissima 'Rosealind' | Direct sun (at least 4-6 hours) | Weekly while establishing, then during droughts | 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 |
| Diana Rose of Sharon | Direct sun (at least 4-6 hours) | When the top 5 cm of soil is dry, roughly every 7-10 days in summer | Pet-safe |
| 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 |
| 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 |
| Dog Rose | Direct sun (at least 4-6 hours) | Weekly during the first growing season; rarely once established | Pet-safe |
| Don Juan Rose | Direct sun (at least 4-6 hours) | Deeply once or twice a week in the growing season, more in heat | Pet-safe |
| Double Delight Rose | Direct sun (at least 4-6 hours) | Deeply 1-2 times per week, more in heat | Pet-safe |
| Double Knock Out Rose | Direct sun (at least 4-6 hours) | About 2.5 cm weekly, deep watering | Pet-safe |
| Doublefile Viburnum 'Mariesii' | Direct sun (at least 4-6 hours) | Deep soak when the top 5 cm of soil dries, roughly weekly in the first two seasons | 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 |
| 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 |
| Dwarf Alberta Spruce | Direct sun (at least 4-6 hours) | Every 5-7 days when establishing; deep soak when the top few cm of soil dry out | Pet-safe |
| Dwarf Bamboo | Bright indirect light (just back from a sunny window) | 2–3 times per week in summer, reduce in winter | Pet-safe |
| Dwarf Birch | Direct sun (at least 4-6 hours) | Regular moisture; do not allow to dry out, especially in summer | Pet-safe |
| Dwarf Blue Spruce | Direct sun (at least 4-6 hours) | Every 7-10 days when young; deep, infrequent watering once established | 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 Cedar of Lebanon | Direct sun (at least 4-6 hours) | Weekly when young; bi-weekly once established | 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 Jamaican Heliconia | Direct sun (at least 4-6 hours) | Keep soil consistently moist; water when only the top 1-2 cm dries, roughly every 4-6 days | Pet-safe |
| Dwarf Korean Lilac | Direct sun (at least 4-6 hours) | Weekly while establishing, then every 1-2 weeks in dry spells | Pet-safe |
| Dwarf Sugar Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in summer; every 14 days in winter | Pet-safe |
| Dwarf Windmill Palm | Direct sun (at least 4-6 hours) | Weekly while establishing; little supplemental water once mature | Pet-safe |
| Eared Abutilon | Bright indirect light (just back from a sunny window) | Every 5–7 days in growing season, every 10–14 days in winter | Pet-safe |
| Eared Sage | Bright indirect light (just back from a sunny window) | Weekly in summer, less in winter | Pet-safe |
| Early Goldenrod | Direct sun (at least 4-6 hours) | Low to moderate — drought-tolerant once established | Pet-safe |
| East Himalayan Fir | Direct sun (at least 4-6 hours) | Regularly during establishment; drought-tolerant once mature | Pet-safe |
| Eastern Hemlock | Medium indirect light (a couple of metres from a window) | Weekly during establishment; regular moisture required long-term | Pet-safe |
| Echinops bannaticus 'Taplow Blue' | Direct sun (at least 4-6 hours) | Drought-tolerant once established; water new plants until settled | Pet-safe |
| Eglantyne Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly through the growing season, more in heat | Pet-safe |
| Egyptian White Water Lily | Direct sun (at least 4-6 hours) | Permanently submerged aquatic — maintain 22–40 cm of water over the crown | Pet-safe |
| Eitape Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer, every 3–4 weeks in winter | Pet-safe |
| Elephant bush | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is fully dry, roughly every 10-14 days in summer | Pet-safe |
| Elina Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly in the growing season; more in heat | Pet-safe |
| Emerald Ripple Peperomia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, about every 7-14 days in growth and far less in winter | Pet-safe |
| Erman's Birch | Direct sun (at least 4-6 hours) | Regular watering for first 2–3 years; occasional once established | Pet-safe |
| Ethiopian Banana | Direct sun (at least 4-6 hours) | Keep soil consistently moist; water every 4-6 days during warm months | Pet-safe |
| 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 |
| 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 |
| Everlasting Sweet Pea | Direct sun (at least 4-6 hours) | Weekly while establishing; drought-tolerant once mature | Pet-safe |
| Extended Alcantarea | Bright indirect light (just back from a sunny window) | Every 1–2 weeks in summer; every 3–4 weeks in winter | Pet-safe |
| 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 |
| Falstaff Rose | Direct sun (at least 4-6 hours) | Deeply once or twice a week in the growing season; more in heat or sandy soil | Pet-safe |
| Feelin' Blue Deodar Cedar | Direct sun (at least 4-6 hours) | Weekly when young; monthly once established | Pet-safe |
| Felicia Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly during the growing season, more often in hot weather | 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 |
| Few-flowered Abutilon | Bright indirect light (just back from a sunny window) | Every 7–10 days in active growth; fortnightly in cooler months | Pet-safe |
| Few-Flowered 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 |
| 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 |
| 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 |
| Fishhook Barrel Cactus | Direct sun (at least 4-6 hours) | When the soil is completely dry, roughly every 2-3 weeks in summer; little to none from late autumn through winter | Pet-safe |
| Fishhook Barrel Cactus | Direct sun (at least 4-6 hours) | When the soil is bone dry, every 10-14 days in summer; once every 4-6 weeks in winter | Pet-safe |
| 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 |
| 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 |
| 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-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 |
| Florida Silver Palm | Direct sun (at least 4-6 hours) | When the top 4-5 cm of soil is dry, roughly every 10-14 days in summer | Pet-safe |
| Flower Carpet Rose | Direct sun (at least 4-6 hours) | Deeply once a week in the growing season; more in containers or heat | Pet-safe |
| Flowering Banana | Direct sun (at least 4-6 hours) | When the top 3 cm of soil is dry, roughly every 5-7 days in growing season | Pet-safe |
| Flowering Dogwood 'Cherokee Chief' | Bright indirect light (just back from a sunny window) | Weekly deep watering, more in drought | Pet-safe |
| Forsythia 'Lynwood Gold' | Direct sun (at least 4-6 hours) | Weekly while establishing, then only in extended dry spells | Pet-safe |
| Forsythia 'Show Off' | Direct sun (at least 4-6 hours) | Weekly to establish, then mainly during dry spells | Pet-safe |
| Forsythia Sage | Bright indirect light (just back from a sunny window) | Weekly during active growth | 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-stamen Tamarisk | Direct sun (at least 4-6 hours) | Moderate to low; drought-tolerant once established | Pet-safe |
| Fourth of July Rose | Direct sun (at least 4-6 hours) | Deeply once or twice a week in the growing season, more during heat | Pet-safe |
| Frau Dagmar Hartopp Rose | Direct sun (at least 4-6 hours) | Weekly while establishing; drought-tolerant once settled | Pet-safe |
| French Tamarisk | Direct sun (at least 4-6 hours) | Moderate; drought-tolerant once established | Pet-safe |
| frost grass | Medium indirect light (a couple of metres from a window) | Weekly or whenever the top 2–3 cm of soil dries out; reduce in autumn and winter | Pet-safe |
| Fruit-scented Sage | Direct sun (at least 4-6 hours) | When the top 3-5 cm of compost is dry — roughly every 5-8 days in summer, less often in winter | Pet-safe |
| Fuchsia 'Gartenmeister Bonstedt' | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 3-5 days in warm weather | Pet-safe |
| Fuchsia 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 |
| Full Moon Maple | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly weekly in summer | Pet-safe |
| Gentle Hermione Rose | Direct sun (at least 4-6 hours) | Deeply once or twice a week during the growing season; more in heat | Pet-safe |
| Gertrude Jekyll Rose | Direct sun (at least 4-6 hours) | Deeply once or twice a week in the growing season; more in heat or sandy soil | Pet-safe |
| Gesneria-flowered Sage | Direct sun (at least 4-6 hours) | Regular during the growing season | Pet-safe |
| Giant Bamboo | Direct sun (at least 4-6 hours) | Frequently; requires abundant moisture year-round | Pet-safe |
| Giant Bellflower | Medium indirect light (a couple of metres from a window) | Regularly — keep soil consistently moist throughout the growing season | Pet-safe |
| Giant Chain Fern | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil begins to dry, roughly every 5-8 days in summer | Pet-safe |
| Giant Dogwood | Bright indirect light (just back from a sunny window) | Weekly deep watering for young trees; deep watering in droughts for mature specimens | Pet-safe |
| Giant Ginger Lily | Direct sun (at least 4-6 hours) | Generously during active growth; reduce markedly in autumn and winter | Pet-safe |
| Giant Sacaton | Direct sun (at least 4-6 hours) | Every 2–3 weeks once established; more frequent during establishment | 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 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 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 |
| Glaziou's Fuchsia | Bright indirect light (just back from a sunny window) | Water freely in growth; reduce in winter | Pet-safe |
| Gleditsia triacanthos 'Sunburst' | Direct sun (at least 4-6 hours) | Water weekly for the first two seasons; established trees are notably drought-tolerant | Pet-safe |
| Gleditsia triacanthos f. inermis | Direct sun (at least 4-6 hours) | Water weekly for the first two seasons; established trees are highly drought-tolerant | 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 |
| Glossy Abelia | Direct sun (at least 4-6 hours) | Regularly during the first growing season; occasional deep watering once established | Pet-safe |
| Gold Mound Spirea | Direct sun (at least 4-6 hours) | Weekly when establishing; every 1–2 weeks once established | Pet-safe |
| Gold Rush Dawn Redwood | Direct sun (at least 4-6 hours) | Regularly — keep soil consistently moist, especially in summer | Pet-safe |
| 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 Bamboo | Direct sun (at least 4-6 hours) | Weekly when establishing; drought-tolerant once established | Pet-safe |
| Golden Goddess Bamboo | Direct sun (at least 4-6 hours) | Twice weekly during dry periods in summer; reduce to weekly or less in cooler seasons | 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 Torch Cactus | Direct sun (at least 4-6 hours) | When the soil is dry, about weekly to fortnightly in summer; keep dry in winter | 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 Tree Fern | Bright indirect light (just back from a sunny window) | Keep consistently moist; water when the top 3-5 cm of soil feels dry or when trunk feels dry to the touch, roughly every 3-7 days in summer | Pet-safe |
| Golden-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 |
| Goldfinger 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 |
| 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 |
| Graham Thomas Rose | Direct sun (at least 4-6 hours) | Deeply 1-2 times per week, more in heat | Pet-safe |
| Grandidier's Baobab | Direct sun (at least 4-6 hours) | Every 10–14 days in the growing season; virtually none in autumn–winter dormancy | Pet-safe |
| Grape Ivy | Bright indirect light (just back from a sunny window) | When the top 1 inch (2.5 cm) of soil is dry | Pet-safe |
| Gray Birch | Direct sun (at least 4-6 hours) | Moderate; tolerates drier conditions than most birches once established | Pet-safe |
| Gray Organ Pipe | Direct sun (at least 4-6 hours) | When the top half of soil is dry, roughly every 10-14 days in summer; very infrequently in winter | Pet-safe |
| Greek Fir | Direct sun (at least 4-6 hours) | Every 2–3 weeks during establishment; rarely needed once mature | Pet-safe |
| Green Ash | Direct sun (at least 4-6 hours) | Weekly when establishing; drought-tolerant once mature | Pet-safe |
| Green Glaucous Bamboo | Direct sun (at least 4-6 hours) | Twice weekly during establishment; every 7–14 days once mature | Pet-safe |
| Green Panda Bamboo | Bright indirect light (just back from a sunny window) | Twice weekly during establishment and dry spells; weekly once established | Pet-safe |
| Green-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'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 |
| Greenspire Linden | Direct sun (at least 4-6 hours) | Moderate; deep watering during establishment and drought | Pet-safe |
| Greenstem Forsythia | Direct sun (at least 4-6 hours) | Weekly while establishing, then drought-tolerant | Pet-safe |
| Grefsheim Spirea | Direct sun (at least 4-6 hours) | Weekly until established; reduce to occasional watering in drought | Pet-safe |
| Grey-Headed Coneflower | Direct sun (at least 4-6 hours) | Every 2–3 weeks once established; drought-tolerant | Pet-safe |
| Guadua Bamboo | Direct sun (at least 4-6 hours) | Frequently during establishment; moderate once mature | Pet-safe |
| Guariroba Palm | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in summer | Pet-safe |
| Gumbo Limbo | Direct sun (at least 4-6 hours) | Weekly when newly planted; once established, drought-tolerant and needs watering only during prolonged dry spells | Pet-safe |
| Guriri Palm | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in the growing season | Pet-safe |
| Hairy Mallow | Direct sun (at least 4-6 hours) | Every 7–10 days in summer, every 14–21 days in winter | Pet-safe |
| Halesia carolina | Bright indirect light (just back from a sunny window) | Weekly while establishing; regular watering in dry spells | Pet-safe |
| Halesia monticola | Bright indirect light (just back from a sunny window) | Weekly while establishing; regular watering in dry spells | Pet-safe |
| Hanging Lobster Claw | Direct sun (at least 4-6 hours) | Keep soil consistently moist; water when only the top 1-2 cm dries, roughly every 3-5 days in warm conditions | Pet-safe |
| Hansa Rose | Direct sun (at least 4-6 hours) | Water weekly while establishing; drought-tolerant once settled | Pet-safe |
| Hardy Chinese Windmill Palm | Direct sun (at least 4-6 hours) | Weekly while establishing; established garden plants need little extra water | Pet-safe |
| Harlow Carr Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly in growth; more in heat or pots | Pet-safe |
| Hartford Climbing Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth | Pet-safe |
| 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 |
| 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 |
| Heartleaf Hornbeam | Medium indirect light (a couple of metres from a window) | Moderate; water regularly when young; maintain consistent moisture | Pet-safe |
| Heavy Metal Switchgrass | Direct sun (at least 4-6 hours) | Weekly when establishing; every 2–3 weeks once established | Pet-safe |
| 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 |
| Helianthus 'Lemon Queen' | Direct sun (at least 4-6 hours) | Water when the top 3-4 cm of soil is dry, roughly every 5-7 days in summer | Pet-safe |
| Helianthus × multiflorus 'Loddon Gold' | Direct sun (at least 4-6 hours) | About once or twice a week, keeping soil moist in summer | Pet-safe |
| Helianthus decapetalus 'Flore Pleno' | Direct sun (at least 4-6 hours) | Water when the top 3-4 cm of soil is dry, roughly every 5-7 days in summer | Pet-safe |
| Helianthus salicifolius | Direct sun (at least 4-6 hours) | Water when the top 3-4 cm of soil is dry, roughly every 7-10 days; drought-tolerant once established | Pet-safe |
| Henry's Lime | Bright indirect light (just back from a sunny window) | Weekly during establishment; deep watering every 2–3 weeks in dry periods | Pet-safe |
| Hens and chicks | Direct sun (at least 4-6 hours) | Only when soil is fully dry; roughly every 1-2 weeks in summer, every 4-6 weeks in winter | Pet-safe |
| Heritage River Birch | Direct sun (at least 4-6 hours) | Deeply 1-2 times per week in the first 2 years; established trees prefer consistently moist soil | Pet-safe |
| Hibiscus | Direct sun (at least 4-6 hours) | Deep watering every 5-7 days, more in heat | Pet-safe |
| 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 |
| Hibiscus syriacus 'Aphrodite' | Direct sun (at least 4-6 hours) | Weekly while establishing; every 10-14 days once mature unless rainfall is sparse | Pet-safe |
| Hibiscus syriacus 'Blue Bird' | Direct sun (at least 4-6 hours) | Water weekly during the first two seasons and in summer droughts; established plants are moderately drought-tolerant | Pet-safe |
| Hibiscus syriacus 'Helene' | Direct sun (at least 4-6 hours) | Water weekly while establishing and during summer drought; moderately drought-tolerant once mature | Pet-safe |
| Hibiscus syriacus 'Minerva' | Direct sun (at least 4-6 hours) | Water weekly during establishment and summer drought; moderately drought-tolerant once established | Pet-safe |
| Hildebrandt Ravenea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Hill Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season; every 3–4 weeks in winter | Pet-safe |
| Hindu rope plant | Bright indirect light (just back from a sunny window) | When the soil is nearly dry, roughly every 10-14 days in growth | Pet-safe |
| Hindu Rope Plant | Bright indirect light (just back from a sunny window) | When the mix is mostly dry, every 10-14 days or longer | 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 Joe Pye Weed | Direct sun (at least 4-6 hours) | Keep soil reliably moist; water weekly or more during dry weather | 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 |
| Hollyhock | Direct sun (at least 4-6 hours) | Weekly during active growth; reduce in autumn and 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 |
| 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 |
| Hoop Pine | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Hoya | Bright indirect light (just back from a sunny window) | When the soil is mostly dry, every 10-14 days | Pet-safe |
| Hoya 'Krimson Princess' | Bright indirect light (just back from a sunny window) | When the top half of the mix is dry, every 7-14 days | Pet-safe |
| Hoya 'Krimson Queen' | Bright indirect light (just back from a sunny window) | When the top half of the mix is dry, every 7-14 days | Pet-safe |
| Hoya 'Mathilde' | Bright indirect light (just back from a sunny window) | 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 Aldrichii | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-12 days | Pet-safe |
| Hoya Archboldiana | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of the mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Australis | Bright indirect light (just back from a sunny window) | when top 2-3 cm of soil dries | Pet-safe |
| Hoya Australis 'Lisa' | Bright indirect light (just back from a sunny window) | Roughly every 1-2 weeks; only when the top 1-2 inches of soil are dry | Pet-safe |
| Hoya Bella | Bright indirect light (just back from a sunny window) | Every 7-10 days in spring/summer; every 2-3 weeks in winter | Pet-safe |
| Hoya Blashernaezii | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Burtoniae | Bright indirect light (just back from a sunny window) | When the top 2-4 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| Hoya Cagayanensis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya callistophylla | Bright indirect light (just back from a sunny window) | Roughly every 7-14 days in spring/summer, less in winter | Pet-safe |
| Hoya Calycina | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Campanulata | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya Carnosa 'Rubra' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-14 days | Pet-safe |
| Hoya Carnosa Tricolor | Bright indirect light (just back from a sunny window) | Every 1-2 weeks; let the top inch dry out | Pet-safe |
| Hoya Carnosa Variegata | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, about every 7-14 days | Pet-safe |
| Hoya caudata (Sumatra) | Bright indirect light (just back from a sunny window) | Every 1-2 weeks in growth; every 2-3 weeks in winter | Pet-safe |
| Hoya Celata | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of the mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Chouke | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of the mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Cinnamomifolia | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of the mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Clemensiorum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Pet-safe |
| Hoya Compacta 'Regalis' | Bright indirect light (just back from a sunny window) | When the mix is dry to 4-5 cm down, about every 10-14 days | Pet-safe |
| Hoya Coriacea | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya 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 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 Erythrina | Bright indirect light (just back from a sunny window) | When the top 3 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Erythrostemma | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Fitchii | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 10-12 days | Pet-safe |
| Hoya Flagellata | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Flavida | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya Fraterna | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-14 days in growth | Pet-safe |
| Hoya fungii | Bright indirect light (just back from a sunny window) | When the top 1-2 inches of mix are dry, roughly every 1-2 weeks | Pet-safe |
| Hoya Fusca | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-12 days | Pet-safe |
| Hoya Gracilipes | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Gracilis | Bright indirect light (just back from a sunny window) | When the mix is nearly or fully dry, roughly every 10-14 days in growth | Pet-safe |
| Hoya Greenii | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Griffithii | Bright indirect light (just back from a sunny window) | When the top 3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya Halconensis | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Imperialis | Bright indirect light (just back from a sunny window) | When the top half of the soil is dry, roughly every 7-10 days | Pet-safe |
| Hoya Incrassata | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Javanica | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya kentiana | Bright indirect light (just back from a sunny window) | Every 1-2 weeks; let the mix dry out between waterings | Pet-safe |
| Hoya Krimson Princess | Bright indirect light (just back from a sunny window) | Roughly every 1-2 weeks; let the soil dry almost completely first | Pet-safe |
| Hoya Krimson Queen | Bright indirect light (just back from a sunny window) | Roughly every 1-2 weeks; let the top 1-2 inches (or more) of soil dry first | Pet-safe |
| Hoya 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 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 '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 'Black Dragon' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-14 days | Pet-safe |
| Hoya Pubicalyx 'Pink Silver' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, about every 7-12 days in growth | Pet-safe |
| Hoya Pubicalyx 'Red Buttons' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, about every 7-12 days in growth | Pet-safe |
| Hoya Pubicalyx 'Royal Hawaiian Purple' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-14 days | Pet-safe |
| Hoya Pubicalyx 'Silver Pink' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Pubicalyx 'Splash' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-14 days | Pet-safe |
| Hoya Rebecca | Bright indirect light (just back from a sunny window) | When the top 2-4 cm of the mix is dry, roughly every 6-10 days in growth | Pet-safe |
| Hoya 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 Siikfongensis | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 10-14 days in growth | Pet-safe |
| Hoya Sipitangensis | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Solaniflora | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Spartioides | Bright indirect light (just back from a sunny window) | When the mix is nearly dry throughout, roughly every 12-18 days | Pet-safe |
| Hoya Subcalva | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Sunrise | Bright indirect light (just back from a sunny window) | When the top of the mix is dry, roughly every 7-14 days | Pet-safe |
| Hoya Surigaoensis | Bright indirect light (just back from a sunny window) | When the soil is fully dry, roughly every 10-14 days | Pet-safe |
| Hoya Sussuela | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Telosmoides | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of mix is dry, roughly every 7-12 days in growth | Pet-safe |
| Hoya Tsangii | Bright indirect light (just back from a sunny window) | When the top 2-4 cm of mix is dry, roughly every 7-10 days | Pet-safe |
| Hoya Undulata | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of mix is dry, roughly every 7-10 days in growth | Pet-safe |
| Hoya 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 |
| 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 |
| Iceberg Rose | Direct sun (at least 4-6 hours) | Deeply 1-2 times per week, more in heat | Pet-safe |
| Imperial Bromeliad | Direct sun (at least 4-6 hours) | Water sparingly; allow potting medium to almost completely dry between waterings | Pet-safe |
| Indian Fig Opuntia | Direct sun (at least 4-6 hours) | When the soil is completely dry, roughly every 14-21 days in summer and once every 4-6 weeks in winter | Pet-safe |
| indian grass | Direct sun (at least 4-6 hours) | Rarely once established; water during the first growing season to aid establishment | Pet-safe |
| Indian Shot | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Indian Timber Bamboo | Direct sun (at least 4-6 hours) | 2-3 times per week during the growing season; reduce in winter | Pet-safe |
| Intrigue Rose | Direct sun (at least 4-6 hours) | Deeply 1-2 times weekly, about 4-5 litres per plant | Pet-safe |
| Iridescent Bamboo | Direct sun (at least 4-6 hours) | Twice weekly in spring and summer; weekly in autumn; fortnightly in winter | Pet-safe |
| Ivory Cane Palm | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Jaboticaba | Bright indirect light (just back from a sunny window) | Every 5–7 days; keep consistently moist but not waterlogged | Pet-safe |
| 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 Banana | Direct sun (at least 4-6 hours) | Keep soil consistently moist; water every 4-6 days in active growth | Pet-safe |
| 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 Camellia | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry; keep evenly moist in late summer | Pet-safe |
| Japanese Camellia 'Nuccio's Pearl' | Bright indirect light (just back from a sunny window) | About weekly, more in heat and during budding; water when the top 3-5 cm of soil is dry | Pet-safe |
| Japanese Cornel Dogwood | Direct sun (at least 4-6 hours) | Regular watering while establishing; drought-tolerant once mature | Pet-safe |
| Japanese Maple 'Dissectum' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, often weekly in summer | Pet-safe |
| Japanese Maple 'Osakazuki' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, around weekly in dry weather | Pet-safe |
| Japanese Maple 'Sango Kaku' | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly weekly in dry spells | Pet-safe |
| Japanese Maple 'Tamukeyama' | Bright indirect light (just back from a sunny window) | One to two deep waterings per week when growing | Pet-safe |
| Japanese Rose | Direct sun (at least 4-6 hours) | Weekly while young, then drought-tolerant once established | Pet-safe |
| Japanese Spirea | Direct sun (at least 4-6 hours) | Once per week while establishing; drought-tolerant when established | Pet-safe |
| Japanese Spirea 'Goldflame' | Direct sun (at least 4-6 hours) | Water when the top 5 cm of soil is dry, about weekly while establishing | Pet-safe |
| Japanese Timber Bamboo | Direct sun (at least 4-6 hours) | Frequent during establishment; moderate once established | Pet-safe |
| Japanese Tree Lilac 'Ivory Silk' | Direct sun (at least 4-6 hours) | Weekly deep soakings for the first two years, then during droughts | Pet-safe |
| Japanese Witch Hazel | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-14 days in the growing season | Pet-safe |
| Jasmine (Pink Jasmine) | Bright indirect light (just back from a sunny window) | When the top 2-3cm of soil feels dry, roughly weekly in growth | Pet-safe |
| Jasminum beesianum | Direct sun (at least 4-6 hours) | Keep evenly moist while establishing; water in prolonged dry spells once mature | Pet-safe |
| Jasminum mesnyi | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 5-7 days in summer | Pet-safe |
| Jasminum nudiflorum | Direct sun (at least 4-6 hours) | When the top few centimetres of soil dry out, about every 7-10 days while establishing | 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 |
| Jean's Dilly Spruce | Bright indirect light (just back from a sunny window) | Regular; do not allow to dry out completely, especially in warm weather | Pet-safe |
| Jeddeloh Hemlock | Bright indirect light (just back from a sunny window) | Regular — do not allow to dry out | Pet-safe |
| Jenkins Fan Palm | Bright indirect light (just back from a sunny window) | When top 2–3 cm of soil feels dry | Pet-safe |
| Jenkins Fan Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in growing season | Pet-safe |
| Jubilee Celebration Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly in the growing season; more in heat | Pet-safe |
| Julia Child Rose | Direct sun (at least 4-6 hours) | Deeply 1-2 times per week, more in heat | 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 |
| Just Joey Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly while in growth | Pet-safe |
| Kangaroo Vine | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Pet-safe |
| Karl Foerster Feather Reed Grass | Direct sun (at least 4-6 hours) | When the top few centimetres of soil dry, roughly weekly; tolerant of occasional wet ground | Pet-safe |
| Karl Foerster Feather Reed Grass | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 2 weeks once established | Pet-safe |
| 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 |
| Kentia palm | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, every 10-14 days | Pet-safe |
| Khirni | Direct sun (at least 4-6 hours) | Every 7–14 days when young; drought-tolerant once established | Pet-safe |
| Kiftsgate Rose | Direct sun (at least 4-6 hours) | Deep weekly soak while establishing; little needed once mature | Pet-safe |
| 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 |
| 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 |
| Kneed Alcantarea | Bright indirect light (just back from a sunny window) | Refill the large central cup every 5-7 days; water the medium sparingly only when the top 4-5 cm is dry, roughly every 14-21 days | Pet-safe |
| Kniphofia uvaria | Direct sun (at least 4-6 hours) | Water regularly through the first season, then mainly in summer dry spells once established | Pet-safe |
| Knock Out Rose | Direct sun (at least 4-6 hours) | About 2.5 cm of water weekly, deep soak | Pet-safe |
| Kobus Magnolia | Direct sun (at least 4-6 hours) | Weekly when establishing; once established, natural rainfall is often sufficient except during prolonged drought | Pet-safe |
| Korean Fir | Direct sun (at least 4-6 hours) | Weekly during establishment; moderately drought-tolerant once mature | Pet-safe |
| Korean Spice Viburnum | Direct sun (at least 4-6 hours) | Water when the top 5 cm of soil is dry, about weekly while establishing | Pet-safe |
| Kousa Dogwood | Bright indirect light (just back from a sunny window) | Weekly deep watering while establishing | 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 |
| 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 |
| Laceleaf Japanese Maple 'Crimson Queen' | Bright indirect light (just back from a sunny window) | Deeply once or twice a week in the growing season, more in heat | Pet-safe |
| 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 Finger Cactus | Direct sun (at least 4-6 hours) | Roughly every 2-3 weeks in summer; far less in winter | Pet-safe |
| Lady of Shalott Rose | Direct sun (at least 4-6 hours) | Deeply once or twice a week in the growing season; more in heat or sandy soil | Pet-safe |
| Lady palm | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, every 7-10 days | Pet-safe |
| Langsat | Bright indirect light (just back from a sunny window) | 2–3 times per week; more frequently in dry season | Pet-safe |
| Laos Lady Palm | Medium indirect light (a couple of metres from a window) | Every 7–10 days in the growing season; every 14–21 days in winter | Pet-safe |
| Laos Lady Palm | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil dries out, roughly every 7-10 days | Pet-safe |
| Laurustinus Viburnum | Direct sun (at least 4-6 hours) | Water when the top 5 cm of soil is dry; weekly while establishing, then occasional | Pet-safe |
| 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 |
| Leopard Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Licuri Palm | Direct sun (at least 4-6 hours) | When the top 5 cm of soil is dry, roughly every 10-14 days or less | Pet-safe |
| Lily Magnolia | Bright indirect light (just back from a sunny window) | Weekly during the growing season; reduce in autumn and winter | Pet-safe |
| Lipstick Palm | Bright indirect light (just back from a sunny window) | Keep soil consistently moist — check every 3-4 days; water whenever the surface begins to dry | Pet-safe |
| Liriodendron tulipifera | Direct sun (at least 4-6 hours) | Deep soak weekly in the first two or three growing seasons, then rely on rainfall | Pet-safe |
| Little Gem Magnolia | Direct sun (at least 4-6 hours) | Weekly while establishing (1–3 years); deep watering in summer drought thereafter | Pet-safe |
| Livistona Decipiens | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Livistona Rotundifolia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Long-Horned Ginger Lily | Bright indirect light (just back from a sunny window) | Water frequently during active growth, allowing the medium to drain thoroughly after each watering; reduce in cooler months | Pet-safe |
| Long-leaf Parlor Palm | Medium indirect light (a couple of metres from a window) | Every 7–10 days in the growing season; reduce to every 10–14 days in winter | Pet-safe |
| Long-leaf Parlour Palm | Medium indirect light (a couple of metres from a window) | Every 10–14 days in summer, every 2–3 weeks in winter | Pet-safe |
| Long-Leaf Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in the growing season, monthly in winter | Pet-safe |
| Loulu Palm | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-14 days | Pet-safe |
| 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 |
| 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 |
| Lyme Grass | Direct sun (at least 4-6 hours) | Low; drought-tolerant once established | Pet-safe |
| 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 |
| 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 | 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 |
| 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 |
| Madame Alfred Carriere Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly when establishing; mature plants when the top few centimetres of soil dry, and they tolerate some drought | Pet-safe |
| Madame Lemoine Lilac | Direct sun (at least 4-6 hours) | When the top 5 cm of soil is dry, roughly every 10-14 days; established plants are drought-tolerant | Pet-safe |
| magic star stromanthe | Medium indirect light (a couple of metres from a window) | Every 5–7 days in growing season; every 10–14 days in winter | Pet-safe |
| Magnificent Inula | Bright indirect light (just back from a sunny window) | 2-3 times per week; tolerates moist to wet conditions | Pet-safe |
| Magnolia 'Elizabeth' | Direct sun (at least 4-6 hours) | Weekly during the first few years and in summer droughts | Pet-safe |
| Magnolia 'Jane' | Direct sun (at least 4-6 hours) | Deeply once or twice a week in the first two years, then during dry spells | Pet-safe |
| Magnolia 'Susan' | Direct sun (at least 4-6 hours) | Keep moist while establishing; water deeply weekly in dry spells for the first few years | Pet-safe |
| Magnolia grandiflora 'Gallissonnière' | Direct sun (at least 4-6 hours) | Weekly deep watering in the first 2-3 years, then only during prolonged dry spells | Pet-safe |
| Magnolia wilsonii | Bright indirect light (just back from a sunny window) | Weekly while establishing and during dry summer spells | Pet-safe |
| Mahonia aquifolium Apollo | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, weekly through the first year then occasionally | Pet-safe |
| Mahonia Charity | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, weekly to establish then chiefly during droughts | Pet-safe |
| Mahonia Pinnacle | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, weekly through the first year then occasionally | Pet-safe |
| Mahonia Soft Caress | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, about weekly and more attentively than spinier mahonias | Pet-safe |
| Mahonia Winter Sun | Medium indirect light (a couple of metres from a window) | When the top 3-5 cm of soil is dry, weekly while establishing then only in dry spells | Pet-safe |
| Maiden Grass | Direct sun (at least 4-6 hours) | Weekly during the first growing season; every 2–3 weeks once established | Pet-safe |
| Majesty palm | Bright indirect light (just back from a sunny window) | Keep soil consistently moist, every 4-7 days | Pet-safe |
| Malepartus silver grass | Direct sun (at least 4-6 hours) | Weekly during the growing season; reduce in autumn; minimal in winter | Pet-safe |
| Manna Ash | Direct sun (at least 4-6 hours) | Low to moderate; drought-tolerant once established | 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 |
| Marram Grass | Direct sun (at least 4-6 hours) | Low; drought-tolerant | Pet-safe |
| Martius Fan Palm | Direct sun (at least 4-6 hours) | Weekly during establishment; once established, every 2–3 weeks depending on rainfall | 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 |
| Masters' Larch | Direct sun (at least 4-6 hours) | Weekly during first 2 years; monthly once established | 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 |
| Maximilian Sunflower | Direct sun (at least 4-6 hours) | Every 2–3 weeks once established; minimal supplemental irrigation needed | Pet-safe |
| MD-2 Gold Pineapple | Direct sun (at least 4-6 hours) | Water when the top 3-5 cm of soil dries out, roughly every 7-10 days | Pet-safe |
| Meadow Blazing Star | Direct sun (at least 4-6 hours) | Keep evenly moist to medium; water during dry spells | Pet-safe |
| Mediterranean Fan Palm | Direct sun (at least 4-6 hours) | When the top 4-5 cm of soil is dry, roughly every 10-14 days in summer | Pet-safe |
| Merrill's Wax Plant | Bright indirect light (just back from a sunny window) | Every 7–10 days in summer, every 14–21 days in winter | Pet-safe |
| Metallic Palm | Low light (north window or shaded room) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Metallica Palm | Medium indirect light (a couple of metres from a window) | Every 7–10 days in summer, every 14 days in winter | Pet-safe |
| Mexican Blue Palm | Direct sun (at least 4-6 hours) | When the top 5-8 cm of soil is dry, roughly every 10-14 days in summer; reduce to every 3-4 weeks in winter | Pet-safe |
| Mexican Fence Post Cactus | Direct sun (at least 4-6 hours) | When the top half of soil is dry, roughly every 10-14 days in summer; every 4-6 weeks in winter | Pet-safe |
| Mexican Hat Palm | Low light (north window or shaded room) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Mexican Orange Sage | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil dries out, roughly every 5-8 days during the growing season | Pet-safe |
| Mexican Sage | Direct sun (at least 4-6 hours) | Weekly during active growth | Pet-safe |
| Mexican Tree Fern | Bright indirect light (just back from a sunny window) | 2-3 times per week; keep trunk moist | Pet-safe |
| Midas Touch Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly during growth | Pet-safe |
| Middendorf Weigela | Bright indirect light (just back from a sunny window) | Every 7 days during dry periods; keep evenly moist but not waterlogged | Pet-safe |
| Milky Way Kousa Dogwood | Bright indirect light (just back from a sunny window) | Weekly while establishing; deep watering in summer drought | Pet-safe |
| Min Fir | Direct sun (at least 4-6 hours) | Regularly during establishment; moderate thereafter | Pet-safe |
| Miniature Chusan Palm | Bright indirect light (just back from a sunny window) | Weekly in the growing season, reduced in winter | Pet-safe |
| Miniature Sugar Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in summer; every 14 days in winter | Pet-safe |
| Miss Grace Dawn Redwood | Direct sun (at least 4-6 hours) | Weekly or more in dry periods; tolerates wet soils | Pet-safe |
| Mister Lincoln Rose | Direct sun (at least 4-6 hours) | Deeply 1-2 times per week, more in heat | Pet-safe |
| Mistletoe cactus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days in growth | Pet-safe |
| Modoc Cypress | Direct sun (at least 4-6 hours) | Minimal once established; drought-tolerant | Pet-safe |
| Momi Fir | Direct sun (at least 4-6 hours) | Moderate; water regularly during establishment | Pet-safe |
| Monarch Birch | Direct sun (at least 4-6 hours) | Regular watering for first 2–3 years; moderate once established | Pet-safe |
| Money tree | Bright indirect light (just back from a sunny window) | When the top 3 cm of soil is dry, every 7-14 days | Pet-safe |
| Mongolian Linden | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 2 weeks in dry summers | Pet-safe |
| Monkey 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 |
| Monstrose Apple Cactus | Direct sun (at least 4-6 hours) | When the mix is dry, roughly every 10-14 days in summer; minimal in winter | 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 |
| Moonstones | Bright indirect light (just back from a sunny window) | Every 2 to 3 weeks in active growth; roughly monthly or less in winter | Pet-safe |
| Morning Light Maiden Grass | Direct sun (at least 4-6 hours) | Weekly for the first growing season; every 2–3 weeks once established | 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 |
| Mountain Hemlock | Direct sun (at least 4-6 hours) | Weekly during establishment; relies on rainfall and snowmelt once established | 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 |
| Munstead Wood Rose | Direct sun (at least 4-6 hours) | Deeply 1-2 times per week, more in heat | Pet-safe |
| Mysore trumpetvine | Bright indirect light (just back from a sunny window) | Regularly during growth; reduced in winter | Pet-safe |
| 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 |
| Nance | Direct sun (at least 4-6 hours) | Every 14–21 days; highly drought-tolerant when established | Pet-safe |
| Nardoo | Direct sun (at least 4-6 hours) | Aquatic — grow permanently in shallow water 5–15 cm deep, or in waterlogged pond margin soil | Pet-safe |
| Narrow-Leaf Fountain Bamboo | Medium indirect light (a couple of metres from a window) | 2-3 times per week in warm months; weekly in cool weather | Pet-safe |
| Narrow-Leaved Ash | Direct sun (at least 4-6 hours) | Low to moderate; drought-tolerant once established | Pet-safe |
| Nasturtium | Direct sun (at least 4-6 hours) | Weekly watering | Pet-safe |
| 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 Plum Bonsai | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, roughly every 3-6 days in growth | 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 |
| Neanthe Bella Palm | Low light (north window or shaded room) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | 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 |
| 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 |
| New Dawn Rose | Direct sun (at least 4-6 hours) | Deeply once a week in the growing season; more during establishment or drought | Pet-safe |
| New England Aster | Direct sun (at least 4-6 hours) | Keep soil evenly moist; water weekly, more in heat | Pet-safe |
| New Zealand Tree Fern | Bright indirect light (just back from a sunny window) | Consistently moist — water 2-3 times per week during dry spells in the growing season | Pet-safe |
| New Zealand Tree Fuchsia | Bright indirect light (just back from a sunny window) | Regular — consistent moisture | Pet-safe |
| Nihoa Palm | Direct sun (at least 4-6 hours) | When the top 5-7 cm of soil is dry, roughly every 10-21 days | Pet-safe |
| Nikko Fir | Direct sun (at least 4-6 hours) | Weekly when establishing; reduced once established | Pet-safe |
| Nipa Palm | Direct sun (at least 4-6 hours) | Keep constantly moist to wet; does not tolerate drying out | Pet-safe |
| Nodding Sage | Direct sun (at least 4-6 hours) | Low to moderate; allow soil to dry between waterings | Pet-safe |
| 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 Tree Fern | Bright indirect light (just back from a sunny window) | 2-3 times per week; increase in summer and wind | Pet-safe |
| Northern Japanese Hemlock | Bright indirect light (just back from a sunny window) | Weekly during growing season; less in winter | Pet-safe |
| Northwind Switchgrass | Direct sun (at least 4-6 hours) | Weekly during establishment; every 2–3 weeks when mature | Pet-safe |
| Nude Sheath Bamboo | Direct sun (at least 4-6 hours) | Weekly during the growing season; every 2–3 weeks when dormant | Pet-safe |
| 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 |
| Obscura Wax Plant | Bright indirect light (just back from a sunny window) | Every 10-14 days in growth; every 2-3 weeks in winter | Pet-safe |
| Ohio Goldenrod | Direct sun (at least 4-6 hours) | Moderate to high — keep soil consistently moist | Pet-safe |
| Old Lady Cactus | Direct sun (at least 4-6 hours) | Roughly weekly in spring-summer growth; keep nearly dry in winter | Pet-safe |
| Old Man Palm | Direct sun (at least 4-6 hours) | When the top 4-5 cm of soil is dry, roughly every 10-14 days | Pet-safe |
| Old World Climbing Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| old-fashioned weigela | Direct sun (at least 4-6 hours) | Weekly during the first growing season; once or twice per month during dry spells when established | Pet-safe |
| Oliver's impatiens | Medium indirect light (a couple of metres from a window) | Every 4–7 days; moderate and consistent | Pet-safe |
| Olivia Rose Austin | Direct sun (at least 4-6 hours) | Deeply 1-2 times per week, more in heat | Pet-safe |
| Olympiad Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly during growth | Pet-safe |
| Oncidium sphacelatum | Bright indirect light (just back from a sunny window) | Every 4-7 days in growth, when the mix approaches dryness | Pet-safe |
| Orange Clock Vine | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, roughly every 6-8 days in summer | 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 |
| Oriental Chain Fern | Medium indirect light (a couple of metres from a window) | Regularly — keep soil consistently moist | Pet-safe |
| Oriental Hornbeam | Direct sun (at least 4-6 hours) | Low once established; water during first 2 seasons only | 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 |
| 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 |
| Overdam Feather Reed Grass | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 2 weeks once established | Pet-safe |
| Overdam Variegated Feather Reed Grass | Direct sun (at least 4-6 hours) | When the top few centimetres of soil dry, about weekly; tolerates occasionally damp soil | Pet-safe |
| 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 Fan Palm | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 7-10 days | 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 |
| Pagoda Dogwood | Medium indirect light (a couple of metres from a window) | Keep soil evenly moist; water deeply weekly in the first two seasons and during droughts | Pet-safe |
| Pale Vygie | Direct sun (at least 4-6 hours) | Every 3–4 weeks established; more frequent in first season | Pet-safe |
| Pale-Leaved Sunflower | Direct sun (at least 4-6 hours) | Weekly until established, then every 1-2 weeks | Pet-safe |
| Pampas Grass | Direct sun (at least 4-6 hours) | Weekly while establishing; thereafter only in prolonged drought | Pet-safe |
| Panama Queen | Bright indirect light (just back from a sunny window) | Every 5–7 days during the growing season; reduce in winter | Pet-safe |
| Panicle Fuchsia | Bright indirect light (just back from a sunny window) | Regular — keep just moist | Pet-safe |
| Paper Birch | Direct sun (at least 4-6 hours) | Weekly in the first 3 years; every 10–14 days once established, more in summer heat | Pet-safe |
| Parlor palm | Medium indirect light (a couple of metres from a window) | When the top 2 cm of soil is dry, every 7-10 days | Pet-safe |
| Parlour Palm | Medium indirect light (a couple of metres from a window) | Every 7–10 days in spring and summer; every 14–21 days in winter | Pet-safe |
| Paul's Himalayan Musk Rose | Direct sun (at least 4-6 hours) | Deep soak weekly through the first two growing seasons; established plants rarely need watering | Pet-safe |
| 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 Rose | Direct sun (at least 4-6 hours) | Deeply 1-2 times per week, more in heat | 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 |
| Pelotazo Mallow | Direct sun (at least 4-6 hours) | Every 10–21 days in summer; monthly or less 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 |
| Penelope Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly through the growing season, more in heat | Pet-safe |
| Peruvian Apple Cactus | Direct sun (at least 4-6 hours) | Every 2-3 weeks in spring/summer; roughly monthly or less in winter | Pet-safe |
| Peruvian Canna | Direct sun (at least 4-6 hours) | Keep soil consistently moist; water every 4-6 days in summer | Pet-safe |
| Peruvian Old Man Cactus | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 14-21 days in summer and once every 4-6 weeks in winter | Pet-safe |
| Petunia 'Supertunia Vista Bubblegum' | Direct sun (at least 4-6 hours) | When the top 2-3cm of soil is dry, often daily for containers in summer heat | Pet-safe |
| Petunia 'Tidal Wave Silver' | Direct sun (at least 4-6 hours) | When the top 2-3cm of soil is dry; containers may need daily watering in summer | Pet-safe |
| Petunia 'Wave Purple' | Direct sun (at least 4-6 hours) | When the top 2-3cm of soil is dry, often daily in summer for baskets and containers | Pet-safe |
| Pilalo Fuchsia | Bright indirect light (just back from a sunny window) | Freely in growth; reduce in winter | Pet-safe |
| Pinemat manzanita | Direct sun (at least 4-6 hours) | Low to moderate; allow soil to dry between waterings once established | Pet-safe |
| Pink Cascade Tamarisk | Direct sun (at least 4-6 hours) | Low to moderate; drought-tolerant once established | Pet-safe |
| Pink Deutzia | Direct sun (at least 4-6 hours) | Every 7-10 days during dry periods; drought-tolerant once established | Pet-safe |
| Pink Flowering Dogwood | Bright indirect light (just back from a sunny window) | Weekly deep watering; increase in summer heat | Pet-safe |
| Pink Knock Out Rose | Direct sun (at least 4-6 hours) | About 2.5 cm of water weekly, deep soak | Pet-safe |
| Pink Pampas Grass | Direct sun (at least 4-6 hours) | Weekly while establishing; afterwards only in prolonged drought | Pet-safe |
| Pink Velvet Banana | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Plastic Plant Orchid | Bright indirect light (just back from a sunny window) | Every 4–7 days in growth; every 10–14 days in winter | Pet-safe |
| 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 Soft Shield Fern | Medium indirect light (a couple of metres from a window) | Regular; keep moist but well-drained | Pet-safe |
| Pochutla Chamaedorea | Medium indirect light (a couple of metres from a window) | Every 7–14 days (allow top 2 in to dry between waterings) | Pet-safe |
| Point Reyes bearberry | Direct sun (at least 4-6 hours) | Low once established; water weekly for the first 1–2 seasons | Pet-safe |
| Pointed-Leaf Wax Plant | Bright indirect light (just back from a sunny window) | Every 10–14 days in summer; every 3–4 weeks in winter | Pet-safe |
| Pompona Vanilla | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of the growing medium feels dry, roughly every 7-10 days in summer | Pet-safe |
| 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 |
| Portuguese heath | Direct sun (at least 4-6 hours) | Weekly during establishment; every 2 weeks in the first summer; drought-tolerant once established | Pet-safe |
| 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 |
| Prairie Blazing Star | Direct sun (at least 4-6 hours) | Moderate; weekly during establishment; drought-tolerant once established | Pet-safe |
| Prairie Dock | Direct sun (at least 4-6 hours) | Every 2-4 weeks once established | Pet-safe |
| Prairie Heart-Leaved Aster | Direct sun (at least 4-6 hours) | Low to moderate — drought tolerant | Pet-safe |
| Prairie Sky Switchgrass | Direct sun (at least 4-6 hours) | Weekly during first season; every 2–3 weeks once established | 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 |
| Pride of Rochester Deutzia | Direct sun (at least 4-6 hours) | Every 7-10 days during dry spells; drought-tolerant once established | Pet-safe |
| Princess Alexandra of Kent Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly in growth; more in heat or containers | Pet-safe |
| Prosperity Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly in the growing season, more in heat | Pet-safe |
| Pumila Dwarf Pampas Grass | Direct sun (at least 4-6 hours) | Weekly during establishment; afterwards only in drought | Pet-safe |
| Pumila Norway Spruce | Direct sun (at least 4-6 hours) | Every 7-10 days while establishing; deep soak when the top 5 cm of soil dries | Pet-safe |
| 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 Fountain Grass | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil dries, roughly weekly in the ground and more often in containers | Pet-safe |
| Purple Royal Fern | Medium indirect light (a couple of metres from a window) | Keep soil consistently moist to wet; may need watering every 2-3 days in summer heat | Pet-safe |
| Purple-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 |
| Pygmy Date Palm | Bright indirect light (just back from a sunny window) | Keep evenly moist in growth; reduce in winter | Pet-safe |
| Pygmy Date Palm 'Trifurcata' | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in growth | Pet-safe |
| Queen Elizabeth Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly, when the top few centimetres of soil are dry | 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 the Night | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days in summer; every 3-4 weeks in winter | Pet-safe |
| Queen of the Night Cereus | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 10-14 days in summer and every 4-6 weeks in winter | 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 |
| 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 |
| 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 |
| Rat Tail Cactus | Bright indirect light (just back from a sunny window) | Every 1–2 weeks in spring and summer; every 3–4 weeks in winter | Pet-safe |
| Rattlesnake Plant | Bright indirect light (just back from a sunny window) | Every 5-7 days in spring/summer; less in winter | Pet-safe |
| Ravenea Glauca | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| 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 Fir | Direct sun (at least 4-6 hours) | Regular moisture; does not tolerate summer drought well | 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 Inca Passionflower | Direct sun (at least 4-6 hours) | Every 3–5 days; keep consistently moist but not waterlogged | Pet-safe |
| Red Latan Palm | Direct sun (at least 4-6 hours) | Every 7–14 days; allow soil to partially dry between waterings | Pet-safe |
| Red Latan Palm | Direct sun (at least 4-6 hours) | When the top 5-8 cm of soil is dry, roughly every 10-14 days in summer; every 3-4 weeks in winter | Pet-safe |
| Red Margin Bamboo | Direct sun (at least 4-6 hours) | 2-3 times per week during establishment; weekly once mature | Pet-safe |
| Red Mombin | Direct sun (at least 4-6 hours) | Every 10–21 days; drought-tolerant when established | Pet-safe |
| Red Osier Dogwood | Bright indirect light (just back from a sunny window) | Regularly; keep soil consistently moist | Pet-safe |
| Red Spruce | Direct sun (at least 4-6 hours) | Weekly in dry periods; naturally receives adequate moisture in humid northeastern climates | Pet-safe |
| Red Twig Dogwood 'Arctic Fire' | Direct sun (at least 4-6 hours) | Keep consistently moist; tolerates wet soil | Pet-safe |
| Red-Fleshed Dragon Fruit | Bright indirect light (just back from a sunny window) | Water when the top 3-5 cm of soil is dry, roughly every 7-10 days in growth; reduce in winter | Pet-safe |
| Red-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 |
| 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 Elkhorn Fern | Bright indirect light (just back from a sunny window) | Soak when the root mass nears dry, roughly every 7-14 days | Pet-safe |
| Regal Staghorn Fern | Bright indirect light (just back from a sunny window) | When the shield fronds feel dry to the touch or the mounted board is very light, soak every 7-14 days | Pet-safe |
| Related Columnea | Medium indirect light (a couple of metres from a window) | When top 2–3 cm of mix dries | Pet-safe |
| Rhapis Multifida | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Rhapis Subtilis | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| 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 |
| 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 |
| 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 |
| 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 |
| Rigid Goldenrod | Direct sun (at least 4-6 hours) | Low — drought tolerant once established | Pet-safe |
| Robert Young Bamboo | Direct sun (at least 4-6 hours) | 2-3 times per week when establishing; weekly once established | Pet-safe |
| Robin Hill serviceberry | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 2–3 weeks once established | Pet-safe |
| Rock Palm | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days in summer; every 2-3 weeks in winter | Pet-safe |
| Rocky Mountain Douglas Fir | Direct sun (at least 4-6 hours) | Moderate during establishment; drought-tolerant once established | Pet-safe |
| Rose | Direct sun (at least 4-6 hours) | Deep watering once a week, more in heat | Pet-safe |
| Rose of Sharon 'Blue Bird' | Direct sun (at least 4-6 hours) | Weekly while establishing, then during dry or hot spells | Pet-safe |
| Rose of Sharon 'Diana' | Direct sun (at least 4-6 hours) | Weekly to establish, then during dry and hot periods | Pet-safe |
| Rosebay Willowherb | Direct sun (at least 4-6 hours) | Minimal once established; tolerates both dry and wet soils | Pet-safe |
| Roseraie de l'Hay Rose | Direct sun (at least 4-6 hours) | Weekly during establishment; drought-tolerant once settled | Pet-safe |
| Rosinweed | Direct sun (at least 4-6 hours) | Every 2-3 weeks once established | Pet-safe |
| Rough Bamboo | Direct sun (at least 4-6 hours) | Frequently; keep moist, especially when establishing | Pet-safe |
| Rough Blazing Star | Direct sun (at least 4-6 hours) | Water to establish, then only during extended drought | Pet-safe |
| Rough Coneflower | Direct sun (at least 4-6 hours) | Every 2-3 weeks once established | Pet-safe |
| Rough Tree Fern | Bright indirect light (just back from a sunny window) | Keep consistently moist; water every 3-5 days in the growing season, every 7-10 days in cooler months | Pet-safe |
| Round-leaved Sage | Bright indirect light (just back from a sunny window) | Every 5–7 days during active growth | Pet-safe |
| Royal Star Magnolia | Direct sun (at least 4-6 hours) | Weekly while young; in summer droughts for established shrubs | Pet-safe |
| Rufa Fountain Bamboo | Bright indirect light (just back from a sunny window) | Regularly during the growing season, approximately every 5–7 days; keep soil consistently moist but not waterlogged | Pet-safe |
| Rugosa Rose | Direct sun (at least 4-6 hours) | weekly when establishing, monthly once established | Pet-safe |
| Russian Olive | Direct sun (at least 4-6 hours) | Low; highly drought-tolerant | Pet-safe |
| Rustica Rubra magnolia | Direct sun (at least 4-6 hours) | Regularly when young; moderate once established | Pet-safe |
| Sabal Bermudana | Direct sun (at least 4-6 hours) | When the top 4-5 cm of soil is dry, roughly every 10-14 days once established | Pet-safe |
| Sabal Mexicana | Direct sun (at least 4-6 hours) | When the top 4-5 cm of soil is dry, roughly every 10-14 days once established | Pet-safe |
| Sakhalin Fir | Direct sun (at least 4-6 hours) | Moderate; water regularly during establishment | Pet-safe |
| Salal | Low light (north window or shaded room) | Moderate; established plants are drought-tolerant but prefer moist conditions | Pet-safe |
| Sally Holmes Rose | Direct sun (at least 4-6 hours) | Deep watering once or twice weekly | Pet-safe |
| Samaipatensis Cactus | Direct sun (at least 4-6 hours) | When the soil is dry, about every 10-14 days in summer; sparing in winter | Pet-safe |
| San Jose Hesper Palm | Direct sun (at least 4-6 hours) | Every 2–3 weeks during growth; monthly or less when established | Pet-safe |
| San Jose Hesper Palm | Direct sun (at least 4-6 hours) | When the top 5-7 cm of soil is dry, roughly every 10-14 days in the growing season; every 3-4 weeks in winter | Pet-safe |
| Sand Bluestem | Direct sun (at least 4-6 hours) | Minimal — seasonal rainfall only in most settings | Pet-safe |
| Sand Sedge | Direct sun (at least 4-6 hours) | Very infrequent — drought-adapted | Pet-safe |
| Sanguine Coneflower | Direct sun (at least 4-6 hours) | Weekly during first season; every 3–4 weeks once established | Pet-safe |
| Sanguisorba officinalis | Direct sun (at least 4-6 hours) | Keep soil moist; water every 4-7 days in dry spells | Pet-safe |
| Santa Rita Prickly Pear | Direct sun (at least 4-6 hours) | Sparingly when soil is fully dry, about every 3-4 weeks in summer; nearly none in winter | Pet-safe |
| Sapphire Tower | Direct sun (at least 4-6 hours) | every 7–10 days in the growing season, every 21–28 days in winter | Pet-safe |
| Sasanqua Camellia | Bright indirect light (just back from a sunny window) | Keep soil evenly moist; water deeply once or twice weekly in the growing season, more in heat | Pet-safe |
| Sasanqua Camellia 'Yuletide' | Bright indirect light (just back from a sunny window) | About weekly, more in summer heat; water when the top 3-5 cm of soil is dry | Pet-safe |
| Saucer Magnolia | Direct sun (at least 4-6 hours) | Weekly while establishing, then during dry spells | Pet-safe |
| Saucer Magnolia | Bright indirect light (just back from a sunny window) | Weekly during establishment; every 10–14 days once mature in dry spells | Pet-safe |
| Sawtooth Sunflower | Direct sun (at least 4-6 hours) | Weekly when young; every 1-2 weeks when established | Pet-safe |
| Scabrosa Rugosa Rose | Direct sun (at least 4-6 hours) | Weekly while establishing; drought-tolerant afterwards | Pet-safe |
| Scaly Blazing Star | Direct sun (at least 4-6 hours) | Water to establish, then only in prolonged drought | Pet-safe |
| Scarlet Banana | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Scepter'd Isle Rose | Direct sun (at least 4-6 hours) | Deeply once or twice a week in the growing season; more in heat, sandy soil or containers | Pet-safe |
| Scrub Palmetto | Direct sun (at least 4-6 hours) | Rarely after establishment — every 3–6 weeks in extended dry spells | Pet-safe |
| Selenicereus anthonyanus | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days in summer | Pet-safe |
| Selenicereus pteranthus | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-14 days in summer | Pet-safe |
| Senegal Date Palm | Direct sun (at least 4-6 hours) | When the top few centimetres of soil dry, roughly every 5-10 days | Pet-safe |
| Senegal Date Palm | Direct sun (at least 4-6 hours) | Water deeply every 7-14 days in active growth; more drought-tolerant once established | Pet-safe |
| Senita Cactus | Direct sun (at least 4-6 hours) | Every 2–3 weeks in summer; once a month or less in winter | Pet-safe |
| Shagbark manzanita | Direct sun (at least 4-6 hours) | Every 3–4 weeks once established; more frequent during the first 2 years | 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 |
| Sharp-fruited Abutilon | Direct sun (at least 4-6 hours) | Every 7–10 days when young; fortnightly once established | 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 |
| Shenandoah Switchgrass | Direct sun (at least 4-6 hours) | Weekly during establishment (first season); monthly or as needed once established | Pet-safe |
| Sheridan Spire Dawn Redwood | Direct sun (at least 4-6 hours) | Regularly — maintain consistently moist soil | Pet-safe |
| 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 Fuchsia | Bright indirect light (just back from a sunny window) | Moderate during growth; minimal in winter | 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 Border Forsythia | Direct sun (at least 4-6 hours) | Every 7-14 days during dry spells; very drought-tolerant once established | Pet-safe |
| Showy Goldenrod | Direct sun (at least 4-6 hours) | Drought-tolerant once established; water in extended dry spells only | Pet-safe |
| Showy Tick Trefoil | Direct sun (at least 4-6 hours) | Water weekly to every 10 days during dry spells in the first season; once established, tolerates moderate drought but prefers consistently moist soil | Pet-safe |
| Shrimp Plant | Bright indirect light (just back from a sunny window) | When the top 2–3 cm (1 in) of compost dries out | Pet-safe |
| Shrubby Indian Mallow | Direct sun (at least 4-6 hours) | Every 10–14 days in summer; monthly or as needed in winter | Pet-safe |
| Siberian Fir | Direct sun (at least 4-6 hours) | Moderate; relies on snowmelt and seasonal rain | Pet-safe |
| Siberian Larch | Direct sun (at least 4-6 hours) | Weekly during establishment; low once established | Pet-safe |
| Siebold's Magnolia | Bright indirect light (just back from a sunny window) | Weekly throughout the growing season; reduce in winter | Pet-safe |
| Sikkim Banana | Bright indirect light (just back from a sunny window) | When the top 3-5 cm of soil is dry, roughly every 7-10 days during active growth | Pet-safe |
| Sikkim Larch | Direct sun (at least 4-6 hours) | Weekly during establishment, less once established | Pet-safe |
| Silver Date Palm | Direct sun (at least 4-6 hours) | Every 7–14 days in summer; every 3–4 weeks in winter | Pet-safe |
| Silver Date Palm | Direct sun (at least 4-6 hours) | Water deeply every 10-14 days in dry periods; largely self-sufficient once established in the ground | Pet-safe |
| Silver European Fan Palm | Direct sun (at least 4-6 hours) | Water every 14-21 days in dry periods; very drought-tolerant once established in the ground | Pet-safe |
| Silver Fir | Direct sun (at least 4-6 hours) | Weekly during establishment; rainfall-dependent once established | Pet-safe |
| Silver Mediterranean Fan Palm | Direct sun (at least 4-6 hours) | Moderate; allow top 3–5 cm to dry between waterings | Pet-safe |
| Silver Torch Cactus | Direct sun (at least 4-6 hours) | When the soil is dry, about every 10-14 days in summer; keep dry in winter | Pet-safe |
| Silver Tree Fern | Bright indirect light (just back from a sunny window) | Keep consistently moist; water every 3-5 days in summer, reducing to every 7-10 days in cooler months | Pet-safe |
| Silverberry | Direct sun (at least 4-6 hours) | Low; drought-tolerant once established | 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 |
| sioux blue indian grass | Direct sun (at least 4-6 hours) | Regularly during first season; once established, water only during prolonged summer drought | Pet-safe |
| Sky Flower Vine | Direct sun (at least 4-6 hours) | When the top 3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Slender Ginger Lily | Bright indirect light (just back from a sunny window) | Consistently moist in the growing season; reduce sharply in winter | Pet-safe |
| Slender Lady Palm | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Pet-safe |
| Small-Fruited Ptychosperma | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Small-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 |
| Smooth Blue Aster | Direct sun (at least 4-6 hours) | Water weekly until established, then sparingly | Pet-safe |
| Smooth Cayenne Pineapple | Direct sun (at least 4-6 hours) | Water when the top 3-5 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Smooth Coneflower | Direct sun (at least 4-6 hours) | Weekly during establishment; every 2–3 weeks once established | Pet-safe |
| Smooth Oxeye | Direct sun (at least 4-6 hours) | Every 1-2 weeks | Pet-safe |
| Snake Cactus | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days in summer; every 3-4 weeks in winter | Pet-safe |
| Snake-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 |
| Snapdragon vine | Bright indirect light (just back from a sunny window) | Water when the top 2–3 cm of soil dries out, roughly every 5–7 days | Pet-safe |
| Snow Banana | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil begins to dry, roughly every 5-7 days in summer | Pet-safe |
| 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 |
| 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 |
| 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 |
| Sonoran Palmetto | Direct sun (at least 4-6 hours) | When the top 5-6 cm of soil is dry, roughly every 14-21 days in summer | Pet-safe |
| Sophy's Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly in growth; container plants checked more often | Pet-safe |
| Southern Canna | Direct sun (at least 4-6 hours) | Keep consistently moist to wet; suitable for bog or marginal planting | Pet-safe |
| Southern Cattail | Direct sun (at least 4-6 hours) | Continuously moist to submerged | Pet-safe |
| Southern Heath | Direct sun (at least 4-6 hours) | Water regularly but allow the soil surface to dry slightly between waterings | 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 Magnolia | Direct sun (at least 4-6 hours) | Deeply once a week for the first two seasons; established trees need water only in drought | Pet-safe |
| Southern Magnolia 'Little Gem' | Direct sun (at least 4-6 hours) | Weekly deep watering while establishing, then every 1-2 weeks in dry weather | Pet-safe |
| Souvenir de la Malmaison Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly while establishing; mature plants when the top 5 cm of soil is dry | Pet-safe |
| Spanish Fir | Direct sun (at least 4-6 hours) | Every 1–2 weeks during establishment; minimal once mature | Pet-safe |
| Spanish heath | Direct sun (at least 4-6 hours) | Weekly during establishment; fortnightly in summer once established | 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 |
| Spiny Club Cactus | Direct sun (at least 4-6 hours) | When soil is dry, about every 10-14 days in summer; little to none in winter | Pet-safe |
| Spiny Fuchsia | Direct sun (at least 4-6 hours) | Infrequent — allow soil to dry between waterings | Pet-safe |
| Spiny Palm | Bright indirect light (just back from a sunny window) | Keep the top 2-3 cm consistently moist, roughly every 5-7 days | Pet-safe |
| Spiny Tree Fern | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-8 days | Pet-safe |
| Splendid Fuchsia | Bright indirect light (just back from a sunny window) | Regular during growth; reduce in winter | Pet-safe |
| Spotted Joe Pye Weed | Direct sun (at least 4-6 hours) | Keep soil consistently moist; water weekly or more in dry spells | 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 |
| Star Jasmine | Bright indirect light (just back from a sunny window) | Water regularly to establish; once mature, water during dry spells when the top few cm of soil dries | Pet-safe |
| Star Magnolia | Direct sun (at least 4-6 hours) | Keep moist while establishing; water deeply weekly in dry spells for the first few years | Pet-safe |
| Star Magnolia 'Royal Star' | Direct sun (at least 4-6 hours) | Weekly while young, then in dry periods | Pet-safe |
| 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 |
| Sterling Silver Linden | Direct sun (at least 4-6 hours) | Weekly during the first 2 years; monthly deep watering once established | Pet-safe |
| Stewartia monadelpha | Bright indirect light (just back from a sunny window) | Weekly; keep soil consistently moist but well-drained | Pet-safe |
| Stewartia pseudocamellia | Bright indirect light (just back from a sunny window) | Weekly; keep soil consistently moist but never waterlogged | Pet-safe |
| Stiff Goldenrod | Direct sun (at least 4-6 hours) | Highly drought-tolerant; water only in prolonged drought | Pet-safe |
| Stiff Sunflower | Direct sun (at least 4-6 hours) | Every 2-3 weeks once established | Pet-safe |
| Stilt Palm | Bright indirect light (just back from a sunny window) | Keep consistently moist; water every 3-5 days in the growing season | Pet-safe |
| Stone Gate Palm | Direct sun (at least 4-6 hours) | Weekly in summer, fortnightly in winter | Pet-safe |
| String of hearts | Bright indirect light (just back from a sunny window) | When soil is dry, every 10-14 days | Pet-safe |
| String of Hearts 'Silver Glory' | Bright indirect light (just back from a sunny window) | When the top half of the soil is fully dry, roughly every 10-14 days in growth | Pet-safe |
| String of Spades | Bright indirect light (just back from a sunny window) | When the soil is nearly dry, roughly every 10-14 days | Pet-safe |
| 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 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 |
| Subalpine Fir | Direct sun (at least 4-6 hours) | Regular watering during establishment; naturally sustained by snowmelt and high-altitude precipitation | Pet-safe |
| Subalpine Larch | Direct sun (at least 4-6 hours) | Moderate; supplemental irrigation during dry summers | Pet-safe |
| Sugarloaf Pineapple | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 7-10 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 |
| Sumatra Banana | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 5-7 days in warm months | Pet-safe |
| Sunflower | Direct sun (at least 4-6 hours) | Deep watering once a week | Pet-safe |
| Sunningdale Silver Pampas Grass | Direct sun (at least 4-6 hours) | Weekly while establishing; thereafter only in extended drought | Pet-safe |
| Super King Ixora Red | Direct sun (at least 4-6 hours) | Every 5–7 days; maintain consistent moisture without waterlogging | Pet-safe |
| Swamp Rose Mallow | Direct sun (at least 4-6 hours) | Keep soil consistently moist; water every 3-5 days in summer or more frequently in containers | Pet-safe |
| Swamp Sunflower | Direct sun (at least 4-6 hours) | Consistently moist; water weekly or more in dry periods | Pet-safe |
| Sweet Birch | Direct sun (at least 4-6 hours) | Moderate; water deeply during drought; established trees on suitable sites are largely self-sufficient | Pet-safe |
| Sweetbay Magnolia | Direct sun (at least 4-6 hours) | Keep soil consistently moist; weekly deep watering when young and during dry spells | Pet-safe |
| Sweetbriar Rose | Direct sun (at least 4-6 hours) | Weekly while establishing, then minimal | Pet-safe |
| Sweetheart plant | Bright indirect light (just back from a sunny window) | When soil is dry, every 14-21 days | Pet-safe |
| Syagrus Romanzoffiana | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 5-10 days in heat | Pet-safe |
| Sylvester Date Palm | Direct sun (at least 4-6 hours) | Deeply every 7-14 days while establishing, then drought-tolerant | Pet-safe |
| Symphyotrichum laeve 'Bluebird' | Direct sun (at least 4-6 hours) | Water to establish, then only in prolonged dry spells once settled | Pet-safe |
| Symphyotrichum novae-angliae 'Andenken an Alma Pötschke' | Direct sun (at least 4-6 hours) | Keep soil consistently moist; water deeply in dry spells, roughly weekly | Pet-safe |
| Symphyotrichum novi-belgii 'Fellowship' | Direct sun (at least 4-6 hours) | Keep soil reliably moist; water deeply, around weekly, never letting roots dry | Pet-safe |
| Tall Coreopsis | Direct sun (at least 4-6 hours) | Low once established; water weekly during the first growing season | Pet-safe |
| Tall Goldenrod | Direct sun (at least 4-6 hours) | Drought-tolerant once established; water only in extended dry spells | Pet-safe |
| tall purple moor grass | Bright indirect light (just back from a sunny window) | Regularly during establishment; once established, water only in prolonged dry spells | Pet-safe |
| Tamarack | Direct sun (at least 4-6 hours) | Regular; tolerates seasonally wet or boggy conditions | Pet-safe |
| Taraw Palm | Direct sun (at least 4-6 hours) | Regularly during establishment; moderately once mature | Pet-safe |
| Tasmanian Tree Fern | Bright indirect light (just back from a sunny window) | Keep consistently moist — water when the top 3-4 cm of soil or fibrous trunk surface feels dry, typically every 3-7 days | Pet-safe |
| Teasing Georgia Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly in the growing season; more in heat | Pet-safe |
| 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 |
| Teddy Bear Palm | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil dries out, roughly every 7-14 days depending on conditions | Pet-safe |
| Teddy Bear sunflower | Direct sun (at least 4-6 hours) | Weekly, or every 5–7 days during dry spells | Pet-safe |
| 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 Bride pearlbush | Direct sun (at least 4-6 hours) | Weekly during establishment; once established, every 2–3 weeks or during dry spells | Pet-safe |
| The Dark Lady Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly through the growing season, more in heat | Pet-safe |
| The Fairy Rose | Direct sun (at least 4-6 hours) | Deeply once a week in the growing season, more during heatwaves | Pet-safe |
| The Generous Gardener Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly in growth; more during establishment and in heat | Pet-safe |
| The Pilgrim Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly in growth; more in heat | Pet-safe |
| Therese Bugnet Rose | Direct sun (at least 4-6 hours) | Weekly while establishing; drought-tolerant thereafter | Pet-safe |
| Thin-Leaved Sunflower | Medium indirect light (a couple of metres from a window) | Every 1–2 weeks; keep moderately moist | 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 |
| Thunberg Spirea | Direct sun (at least 4-6 hours) | Weekly until established; occasional deep watering thereafter | Pet-safe |
| Tilia cordata | Direct sun (at least 4-6 hours) | Water young trees deeply every 7-14 days in dry spells for the first two seasons; established trees are largely self-sufficient | Pet-safe |
| Tilia tomentosa 'Petiolaris' | Direct sun (at least 4-6 hours) | Deep watering every 7-14 days during dry weather for the first two or three seasons; established trees seldom need it | Pet-safe |
| Toe toe | Direct sun (at least 4-6 hours) | Once or twice a week during establishment; monthly once established | Pet-safe |
| Tompa Norway Spruce | Direct sun (at least 4-6 hours) | Every 7-10 days when establishing; deep watering as the top few cm of soil dry | 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 Fuchsia | Bright indirect light (just back from a sunny window) | Regular — keep evenly moist | Pet-safe |
| Touch of Class Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly during growth | Pet-safe |
| Trachelospermum asiaticum | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days while establishing | Pet-safe |
| Trachelospermum jasminoides 'Variegatum' | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil is dry, roughly every 5-10 days in growth | Pet-safe |
| Trachycarpus Latisectus | Bright indirect light (just back from a sunny window) | Regularly through the growing season; keep evenly moist but never soggy | Pet-safe |
| Trachycarpus Takil | Direct sun (at least 4-6 hours) | Deeply once or twice weekly in summer; reduce sharply over winter | Pet-safe |
| Transparent Moor Grass | Direct sun (at least 4-6 hours) | Every 7-14 days; keep moderately moist | 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 heath | Direct sun (at least 4-6 hours) | Fortnightly during the first growing season; drought-tolerant once established | Pet-safe |
| Tree-Like Pilosocereus | Direct sun (at least 4-6 hours) | When soil is dry to mid-depth, roughly every 10-14 days in summer; monthly in winter | Pet-safe |
| Triangle palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Tropaeolum majus 'Jewel of Africa' | Direct sun (at least 4-6 hours) | When the top 2-3 cm of soil is dry, roughly every 4-7 days; containers more often in heat | 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 |
| 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 |
| Tuckers King Palm | Bright indirect light (just back from a sunny window) | When the top 3-4 cm of soil is dry, roughly every 7-10 days | Pet-safe |
| Tuerckheim Canna | Bright indirect light (just back from a sunny window) | Keep soil consistently moist; water every 4-6 days during warm months | Pet-safe |
| Turquoise Puya | Direct sun (at least 4-6 hours) | weekly in summer, monthly in winter | Pet-safe |
| Ukhrul Fan Palm | Bright indirect light (just back from a sunny window) | Weekly during the growing season, reduced in winter | Pet-safe |
| Umbrella Bamboo | Medium indirect light (a couple of metres from a window) | Twice weekly during establishment; every 5–7 days in summer once established | Pet-safe |
| Umbrella Magnolia | Medium indirect light (a couple of metres from a window) | Weekly during dry spells; keep soil evenly moist but not waterlogged | Pet-safe |
| Upright European Hornbeam | Direct sun (at least 4-6 hours) | Moderate; water regularly for first 2–3 seasons; rainfall-dependent once established | Pet-safe |
| 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 |
| Vanda 'Miss Joaquim' | Direct sun (at least 4-6 hours) | Daily in warm, bright conditions; every 2-3 days if cooler | Pet-safe |
| Vanilla Orchid | Bright indirect light (just back from a sunny window) | Water when the top 2-3 cm of medium is dry, roughly every 5-7 days in summer; every 10-14 days in winter | Pet-safe |
| Vanuatu Fan Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, roughly every 6-9 days | Pet-safe |
| Variegated Elephant Bush | Bright indirect light (just back from a sunny window) | When the top 3–4 cm of soil is dry, roughly every 10–14 days in summer and every 3–4 weeks in winter | Pet-safe |
| Variegated Lady Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Pet-safe |
| variegated silver grass | Direct sun (at least 4-6 hours) | Weekly during the growing season; reduce in autumn and winter | Pet-safe |
| Variegated String of Hearts | Bright indirect light (just back from a sunny window) | When the soil is nearly dry, roughly every 10-14 days | Pet-safe |
| Variegated Sweetheart Hoya | Bright indirect light (just back from a sunny window) | When the mix is almost fully dry, every 2-3 weeks | Pet-safe |
| Veilchenblau Rose | Bright indirect light (just back from a sunny window) | Deeply once or twice weekly while establishing; mature plants when the top few centimetres of soil dry, and they tolerate some drought | Pet-safe |
| 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 Ash | Direct sun (at least 4-6 hours) | Low once established; deep watering every 2–4 weeks in summer heat | Pet-safe |
| Velvet Calathea | Bright indirect light (just back from a sunny window) | When the top 2-3 cm (about 1 inch) of soil is dry, roughly every 5-7 days in the growing season | Pet-safe |
| Velvet Calathea | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil is dry, roughly every 5-7 days | Pet-safe |
| Velvet Calathea (Furry Feather) | Bright indirect light (just back from a sunny window) | When the top 2-3cm (1 inch) of soil is dry, roughly every 5-7 days in growth | Pet-safe |
| Velvet Calathea Jungle | Bright indirect light (just back from a sunny window) | Roughly weekly; when the top 2-3 cm of soil is just dry | Pet-safe |
| Velvet Queen sunflower | Direct sun (at least 4-6 hours) | Weekly, more often in hot dry spells | Pet-safe |
| Velvet Sage | Bright indirect light (just back from a sunny window) | Weekly | Pet-safe |
| Verticillata Wax Plant | Bright indirect light (just back from a sunny window) | Every 1-2 weeks; when the top 3cm of mix is dry | Pet-safe |
| Veterans' Honor Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly during growth | Pet-safe |
| Virginia Pine Bonsai | Direct sun (at least 4-6 hours) | When the top 2-3 cm is dry, frequently daily in summer and every few days in cooler months | Pet-safe |
| Wagner's Sage | Bright indirect light (just back from a sunny window) | Water regularly to maintain consistent moisture | Pet-safe |
| Wagners Windmill Palm | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 7-14 days depending on season | Pet-safe |
| Wallich's Wood Fern | Medium indirect light (a couple of metres from a window) | Regular in first season; moderate once established | Pet-safe |
| Wandae Staghorn Fern | Bright indirect light (just back from a sunny window) | Soak when the mount approaches dryness, roughly weekly in summer and every 1-2 weeks in winter | Pet-safe |
| Watermelon Peperomia | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of compost is dry, roughly every 7-14 days in summer and every 2-3 weeks in winter | Pet-safe |
| 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 |
| 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 European Larch | Direct sun (at least 4-6 hours) | Weekly during establishment; less once established | Pet-safe |
| Weeping Giant Sequoia | Direct sun (at least 4-6 hours) | Every 1–2 weeks when young; monthly once established in moist climates | Pet-safe |
| Weeping Nootka Cypress | Direct sun (at least 4-6 hours) | Regularly during establishment; moderate once mature | Pet-safe |
| Weigela 'My Monet' | Direct sun (at least 4-6 hours) | Water when the top 5 cm of soil dries, about weekly while establishing | Pet-safe |
| Weigela 'Wine & Roses' | Direct sun (at least 4-6 hours) | Water when the top 5 cm of soil is dry, about weekly while establishing | Pet-safe |
| West Indian Tree Fern | Medium indirect light (a couple of metres from a window) | When the top 2-3 cm of soil feels just dry, roughly every 5-7 days in warm weather | Pet-safe |
| Western Hemlock | Medium indirect light (a couple of metres from a window) | Weekly during establishment; regular moisture long-term | Pet-safe |
| Western Larch | Direct sun (at least 4-6 hours) | Weekly during establishment; thereafter relies on natural precipitation | 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 Spirea | Direct sun (at least 4-6 hours) | Every 5-7 days or as needed to keep soil consistently moist | Pet-safe |
| Wheki Tree Fern | Medium indirect light (a couple of metres from a window) | Consistently moist — water deeply 2-3 times per week in dry periods during the growing season | Pet-safe |
| White Fir | Direct sun (at least 4-6 hours) | Every 1–2 weeks during establishment; largely drought-tolerant once mature | Pet-safe |
| White Passionflower | Direct sun (at least 4-6 hours) | Once a week during dry spells; less in winter | 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-Powder Bamboo | Direct sun (at least 4-6 hours) | Weekly in the growing season; fortnightly when dormant | Pet-safe |
| Whorled Rosinweed | Bright indirect light (just back from a sunny window) | Every 1-2 weeks once established | Pet-safe |
| Wild Edric Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly in the growing season, more in heat or sandy soil | Pet-safe |
| Wild jasmine | Bright indirect light (just back from a sunny window) | Once or twice a week during active growth; reduce in winter | Pet-safe |
| Wild Rose | Direct sun (at least 4-6 hours) | Weekly while establishing, then rarely once mature | Pet-safe |
| Wildeve Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly while growing, increasing in heat and on free-draining soils | Pet-safe |
| William Shakespeare 2000 Rose | Direct sun (at least 4-6 hours) | Deeply once or twice weekly through the growing season, more in heat | Pet-safe |
| Wilson Spruce | Direct sun (at least 4-6 hours) | Weekly when young; established trees are drought-tolerant | Pet-safe |
| Wine-Colored Alcantarea | Direct sun (at least 4-6 hours) | Keep the central tank filled with fresh water; water the root zone when the top 3-4 cm is dry, roughly every 7-14 days | Pet-safe |
| Wisley 2008 Rose | Direct sun (at least 4-6 hours) | Deeply once or twice a week in the growing season; more in heat or sandy soil | Pet-safe |
| 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 |
| Woodland Sunflower | Medium indirect light (a couple of metres from a window) | Every 2–3 weeks; drought-tolerant once established | Pet-safe |
| Wrinkled Elatostema | Low light (north window or shaded room) | Every 3–5 days; soil should remain consistently moist | Pet-safe |
| 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 Dragon Fruit | Direct sun (at least 4-6 hours) | Every 10-14 days in growth; let the top half of the mix dry first | Pet-safe |
| Yellow Groove Bamboo | Direct sun (at least 4-6 hours) | Weekly in the growing season; every 2 weeks when dormant | Pet-safe |
| Yellow Latan Palm | Direct sun (at least 4-6 hours) | Every 7–10 days in summer; every 14–21 days in winter | Pet-safe |
| Yellow Latan Palm | Direct sun (at least 4-6 hours) | When the top 5-8 cm of soil is dry, roughly every 10-14 days in summer; every 3-4 weeks in winter | Pet-safe |
| Yellow Marliac Water Lily | Direct sun (at least 4-6 hours) | Permanently aquatic — crown submerged 15–75 cm (6–30 in) below water surface | Pet-safe |
| Yellow Mombin | Direct sun (at least 4-6 hours) | Every 7–14 days; highly drought-tolerant when established | Pet-safe |
| Yellow Pitaya | Direct sun (at least 4-6 hours) | When the top 3-5 cm of soil is dry, roughly every 7-10 days in summer; every 2-4 weeks in winter | Pet-safe |
| Yellow Water Lily | Direct sun (at least 4-6 hours) | Permanently aquatic — crown submerged 15–45 cm (6–18 in) below water surface | Pet-safe |
| Yellow-Twig Dogwood | Bright indirect light (just back from a sunny window) | Regularly; keep soil consistently moist | Pet-safe |
| Young's Weeping Birch | Bright indirect light (just back from a sunny window) | Weekly during establishment and dry spells; every 2 weeks once mature | Pet-safe |
| Yulan Magnolia | Direct sun (at least 4-6 hours) | Weekly when young; established trees need water during prolonged dry spells | Pet-safe |
| Yuletide Sasanqua Camellia | Bright indirect light (just back from a sunny window) | Every 5-7 days in summer; reduce in winter but do not let dry out | Pet-safe |
| Yunnan Cypress | Direct sun (at least 4-6 hours) | Regular during establishment; drought-tolerant once mature | Pet-safe |
| Yunnan Dwarf Palm | Bright indirect light (just back from a sunny window) | Every 7–10 days in summer, monthly in winter | Pet-safe |
| Za Baobab | Direct sun (at least 4-6 hours) | Twice weekly in summer; once a month or less in winter | Pet-safe |
| Zebra Grass | Direct sun (at least 4-6 hours) | Weekly for the first season; every 2–3 weeks once established | Pet-safe |
| Zebra Plant | Bright indirect light (just back from a sunny window) | Keep evenly moist; water little and often, roughly when the top third of the mix dries | Pet-safe |
| Zebra Plant (Calathea Zebrina) | Bright indirect light (just back from a sunny window) | Roughly weekly; keep soil evenly moist, never soggy or bone-dry | Pet-safe |
| Zebra Plant Calathea | Bright indirect light (just back from a sunny window) | Roughly weekly; when the top of the soil begins to dry | Pet-safe |
| Zephirine Drouhin Rose | Direct sun (at least 4-6 hours) | Deeply once a week in the growing season; more in heat or during establishment | Pet-safe |
| Zigzag Bamboo | Direct sun (at least 4-6 hours) | Weekly in the growing season; fortnightly in winter | Pet-safe |
| Zombie Palm | Direct sun (at least 4-6 hours) | Every 10–14 days in summer; every 21–28 days in winter | Pet-safe |
| Zuiko Nishiki Lady Palm | Bright indirect light (just back from a sunny window) | When the top 2-3 cm of soil is dry, about every 7-10 days | Pet-safe |