California Native Plant Society
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Allium crispum
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Crinkled Onion
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Allium crispum

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About Crinkled Onion (Allium crispum) Allium crispum is a species of wild onion known by the common name crinkled onion. It is endemic to California, USA, where it grows along the Central Coast, often in clays and serpentine soils. This onion grows from a bulb one to one and a half centimeters wide and sends up naked green stems topped with flower clusters of many flowers, each on a short pedicel. The flowers are magenta in color and have six triangular petals. The inner three petals are smaller and crinkled like cloth and may curl under.
Plant Description
Plant Type
Perennial herb

Flower Color

Flowering Season

Native Status

Natural Setting
Site Type
Clay slopes


Elevation ?
251' - 4455'

Annual Precip. ?
6.5" - 47.0"

Summer Precip. ?
0.14" - 0.95"

Coldest Month ?
40.8° F - 51.5° F

Hottest Month ?
65.9° F - 78.3° F

Humidity ?
0.73 vpd - 26.42 vpd


Sunset Zones ?
7, 14, 15, 16

Landscaping Information
Propagation ?
For propagating by seed: No treatment.

Common uses
Bee Gardens

Nursery Availability
Rarely Available


Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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