| 3D Spider Mix Osteospermum | Direct sun (at least 4-6 hours) | When the top 3 cm of soil is dry, roughly every 7-10 days | Mildly toxic to pets |
| Abelia 'Edward Goucher' | Direct sun (at least 4-6 hours) | Water weekly while establishing; mature plants are drought-tolerant and need water only in prolonged dry weather | Mildly toxic to pets |
| Abelia 'Kaleidoscope' | Direct sun (at least 4-6 hours) | Weekly during establishment, then only in extended drought | Mildly toxic to pets |
| Abelia 'Rose Creek' | Direct sun (at least 4-6 hours) | Weekly while establishing, then occasional deep watering in drought | Mildly toxic to pets |
| Abelia chinensis | Direct sun (at least 4-6 hours) | Weekly through the first season, then mainly during dry spells | Mildly toxic to pets |
| Abelia x grandiflora | Direct sun (at least 4-6 hours) | Weekly deep soak in the first season, then only during prolonged dry spells once established | Mildly toxic to pets |
| Abiu | Direct sun (at least 4-6 hours) | When the top few centimetres of soil dry out, around every 4-7 days in active growth | Mildly toxic to pets |
| Acer griseum | Direct sun (at least 4-6 hours) | Water deeply weekly while establishing; supplement in summer droughts | Pet-safe |
| Acer rubrum | Direct sun (at least 4-6 hours) | Deep soak weekly for the first two seasons; established trees rely on rainfall | Mildly toxic to pets |
| 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 |
| Acerola | Direct sun (at least 4-6 hours) | When the top 3-4 cm of soil is dry, roughly every 4-7 days in growth | Mildly toxic to pets |
| Achillea 'Terracotta' | Direct sun (at least 4-6 hours) | When the top 4-5 cm of soil is dry; roughly every 7-10 days while establishing, rarely once mature | Toxic to pets |
| Achillea millefolium 'Cerise Queen' | Direct sun (at least 4-6 hours) | When the top few centimeters of soil are dry, about every 7-14 days | Mildly toxic to pets |
| Achillea ptarmica 'The Pearl' | Direct sun (at least 4-6 hours) | When the top few cm of soil dry out; roughly weekly, more in heat | Toxic to pets |
| Adagio Maiden Grass | Direct sun (at least 4-6 hours) | Weekly in the first year, then mostly rainfall except in drought | Mildly toxic to pets |
| Aechmea blanchetiana | Direct sun (at least 4-6 hours) | Keep the central cup filled; refresh weekly and water mix when top few cm are dry | Pet-safe |
| Aesculus × carnea 'Briotii' | Direct sun (at least 4-6 hours) | Water young trees weekly to establish, then rely on rainfall | Toxic to pets |
| Aesculus flava | Direct sun (at least 4-6 hours) | Deep watering every 7-10 days through the first two or three growing seasons; established trees rarely need irrigation | Toxic to pets |
| Aesculus hippocastanum | Direct sun (at least 4-6 hours) | Water young trees weekly to establish, then rely on rainfall | Toxic to pets |
| Afghan Iris | Direct sun (at least 4-6 hours) | Moderate in late winter to late spring; bone dry from midsummer to early autumn | Toxic to pets |
| African Baobab | Direct sun (at least 4-6 hours) | Every 1–2 weeks in summer; once a month or less in winter | Pet-safe |
| African Cornflag | Direct sun (at least 4-6 hours) | Weekly during the winter-spring growing season; none in summer dormancy | Mildly toxic to pets |
| African feather grass | Direct sun (at least 4-6 hours) | Every 1–2 weeks once established; more frequently when newly planted | Pet-safe |