California Poppy care — light, water, toxicity and hardiness
California Poppy (Eschscholzia californica) wants full sun and a drink about every 10 days once established. It is grown as an annual, so hardiness zones do not gate it. It is safe to have around pets.
| scientific name | Eschscholzia californica |
|---|---|
| family | Papaveraceae |
| category | flower |
| plant type | annual |
| light | full sun |
| water cadence days | 10 |
| mature height cm | 30 |
| frost tolerant | false |
| toxic to pets | false |
| toxic to humans | false |
| edible | false |
How often should I water California Poppy?
Poor, dry soil; direct sow in fall or early spring.
Who eats it
Palatable to browsing animals such as deer: low. Palatable to grazing animals: low. Palatable to people: no.
What it needs
Its shade tolerance is medium. Its moisture use is low. Its drought tolerance is medium. It wants at least about 8 inches of rain a year. Above roughly 18 inches of annual rain it struggles. It tolerates soil down to pH 5.8. It tolerates soil up to pH 7.5. Its fertility requirement is low. Adapted to coarse, sandy soils: no. Adapted to medium, loamy soils: yes. Adapted to fine, clay soils: yes. Its tolerance of waterlogging is medium. It needs at least 120 frost-free days. Its tolerance of chalky soil is medium. Its fire tolerance is low. Fire resistant: no. It has been recorded down to 7°F. It suppresses neighbours chemically: no.
How it grows
It grows as a single crown form. Its growth rate is moderate. Its lifespan is short. It puts on most of its growth in spring, summer, fall. It spreads by seed at a moderate rate. It resprouts after damage: no. Coppices: no. At maturity it reaches about 1.2 feet. Its roots go down at least 10 inches. Its shape is erect. It holds its leaves through winter: no.
What it looks like
It blooms in late spring. The flowers are orange. Conspicuous in flower: yes. The foliage is green. The foliage texture is medium. In summer the canopy is porous in porosity. In winter it is porous in porosity. Fall colour: no. The fruit or seed is brown. Fruit begins in summer. Fruit finishes by summer. It fruits high. The fruit persists on the plant: no. The fruit is conspicuous: no.
Growing more of it
Propagated by seed: yes. Propagated by cuttings: no. Propagated by container: yes. Propagated by bare root: no. Propagated by bulb: no. Propagated by corm: no. Propagated by tubers: no. Cold stratification required: no. Seedling vigour is high. Commercial availability: routinely available.
Source: Drafted from US Cooperative Extension horticulture guidance; pending HUMAN-05 review (issue 280) · ASPCA Toxic and Non-Toxic Plant List · 2026-09-02