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Coastal buckwheat

Eriogonum cinereum

Also called Ashy Buckwheat, Ashy Leaved Buckwheat, Ashyleaf Buckwheat, Coastal Wild Buckwheat

Coastal buckwheat
Photo: John Rusk from Berkeley, CA, United States of America, CC BY 2.0

Coastal buckwheat is a low, silvery-grey shrub native to the coast of Southern California, growing 2 to 4 feet tall and wide. Its key to success is excellent drainage and full sun, as it is adapted to sandy beaches and dry slopes.

Family
Polygonaceae (Buckwheat family)
Grows as
Shrub
Light
Full sun
Water
Water sparingly once established, and let the soil dry out fully between waterings.
Soil
Sandy or gritty, very well-drained soil; tolerates poor soil.
Temperature
Mild climates; tolerates coastal conditions, frost-tender in cold regions.
How easy
Easy
Native range
W. California (incl. Channel Is.)
Climate
subtropical

About

Eriogonum cinereum is a species of wild buckwheat known by the common names coastal buckwheat and ashyleaf buckwheat.

Where it grows

This shrub is endemic to the coast areas of Southern California, native in Los Angeles County, Ventura County, and Santa Barbara County and introduced to San Diego County.

Uses

This is the foodplant for Euphilotes bernardino, the Bernardino dotted blue butterfly. Buckwheats (Eriogonum sp.) are very important for various butterflies and native wasps.

Other Eriogonum plants

Abert's buckwheat · Santa Cruz Island buckwheat · Eastern Mojave buckwheat · St. Catherine's lace · Seaside buckwheat · Snow Mountain buckwheat · Naked buckwheat · Hoary buckwheat · Mt. Diablo buckwheat · Buckwheat

Text excerpted from the Wikipedia article Eriogonum cinereum 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.

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