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Romneya coulteri
Also called Matilija Poppy, California Tree Poppy
Coulter's Matilija poppy is a large, shrub-like perennial from dry canyons of southern California and Baja California, grown for its huge white crinkled flowers. It spreads by rhizomes, so give it room and full sun with excellent drainage.
Romneya coulteri, the Coulter's Matilija poppy or California tree poppy, is a perennial species of flowering plant in the poppy family (Papaveraceae). Native to southern California, USA, and Baja California, Mexico, it grows in dry canyons in chaparral and coastal sage scrub plant communities, sometimes in areas recently burned. It is a popular ornamental plant, kept for its large, showy flowers.
The specific epithet coulteri commemorates Thomas Coulter, an Irish botanist and explorer.
Text excerpted from the Wikipedia article Romneya coulteri by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
