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Allium falcifolium

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About Scytheleaf Onion (Allium falcifolium) Allium falcifolium is a species of wild onion known by the common name scytheleaf onion. It is native to northern California and southern Oregon, where it grows in heavy, rocky soils, especially serpentine soils. The scytheleaf onion grows from a reddish-brown bulb one to two centimeters wide. The reddish or yellowish green stem is flattened such that it is thick in the center and thin along the edges. There are usually two leaves, which, as its common name suggests, are curved like the blade of a scythe The stem is short and topped with an flower cluster of 10 to 30 flowers, each of which is one to one and a half centimeters wide. Each flower has six pinkish, red-purple, or white-streaked purple petals.
Plant Description
Plant Type
Perennial herb

Flower Color
Pink, White, Purple, Red

Flowering Season
Spring, Summer

Native Status

Natural Setting
Site Type
places with heavy soils


Elevation ?
92' - 8877'

Annual Precip. ?
18.4" - 154.7"

Summer Precip. ?
0.19" - 5.98"

Coldest Month ?
29.4° F - 50.1° F

Hottest Month ?
47.2° F - 74.8° F

Humidity ?
0.42 vpd - 24.48 vpd


Sunset Zones ?
5, 7*, 8, 9, 14, 15, 16, 17

Landscaping Information
Water Requirement ?
Extremely Low
Very Low
Moderate - High

Common uses
Bee Gardens

Nursery Availability
Sometimes 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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