Harford's tree poppy is a drought-tolerant shrub or small tree from the Channel Islands of California, grown for its bright yellow flowers. It needs full sun and very good drainage, and is best kept dry once established.
Family
Papaveraceae (Poppy family)
Grows as
Tree
Light
Full sun
Water
Water deeply but infrequently, letting the soil dry out fully between waterings; once established, little or no summer irrigation is needed.
Soil
Well-drained, sandy or gravelly soil; tolerates poor, lean soil.
Temperature
Mild coastal to Mediterranean climates; hardy to about -5 °C, protect from hard frost.
How easy
Easy
Native range
California (Channel Is.)
Climate
subtropical
About
Dendromecon harfordii, known by the common names Channel Islands tree poppy and Harford's tree poppy, is a species of flowering plant in the poppy family.
It was formerly treated as subspecies of the related species Dendromecon rigida, and had the botanical name Dendromecon rigida subsp. harfordii.
How to grow it
Dendromecon harfordii is cultivated as an ornamental plant, for planting in native plant, drought tolerant, and wildlife gardens, and in natural landscaping projects.
Where it grows
The plant is endemic to San Clemente Island, Santa Catalina Island, Santa Cruz Island, and Santa Rosa Island in the Channel Islands of California.
Text excerpted from the Wikipedia article Dendromecon harfordii 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.