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Dusky onion

Allium campanulatum

Also called Sierra Onion

Dusky onion
Photo: Susan Durham, Public domain

Dusky onion (Allium campanulatum), also called Sierra onion, is a native wild onion of western North America that grows from a small bulb and bears clusters of pink or purple flowers from May to August. It thrives in dry, well-drained sites such as foothills and chaparral and needs little water once established.

Family
Amaryllidaceae (Daffodil & onion family)
Grows as
Bulb
Light
Full sun
Water
Water sparingly during the growing season and keep the bulb dry while it is dormant in summer.
Soil
Free-draining, gritty or sandy soil.
Temperature
Hardy in cold winters; tolerates hot, dry summers.
How easy
Moderate
Edible
Yes, some parts
Native range
Oregon to California
Climate
temperate

About

Allium campanulatum is a species of wild onion known by the common name dusky onion or Sierra onion. This is a flowering plant native to the western United States from southeastern Washington and northern Oregon to southern California, and western Nevada. The dusky onion grows in foothills and mountains, especially in dry areas, such as chaparral habitats.

Other Allium plants

South Idaho onion · Abrams' allium · Allium aciphyllum · Tapertip onion · Allium aeginiense · Allium aflatunense · Allium agrigentinum · Allium alabasicum · Allium albotunicatum · Allium alibile · Altai Onion · Allium altissimum

Text excerpted from the Wikipedia article Allium campanulatum 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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