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Western Hawksbeard Back to Plant Page
Crepis occidentalis

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About Western Hawksbeard (Crepis occidentalis) Crepis occidentalis is a North American species of flowering plant in the daisy family known by the common names western hawksbeard,:119 or largeflower hawksbeard. It is native to western Canada (British Columbia, Alberta, Saskatchewan) and the western United States (from the Pacific to the western Great Plains). Crepis occidentalis grows in many types of habitat. It is a perennial herb growing a grayish woolly branching stem to about 40 centimeters (16 inches) in height from a deep taproot. The woolly, toothed leaves are up to 30 centimeters (12 inches) long at the base of the plant. The inflorescence produces several clusters of flower heads with hairy, often glandular phyllaries and many yellow ray florets but no disc florets. The fruit is a ribbed achene with a frilly pappus at the tip.
Plant Description
Plant Type
Perennial herb

Max. Height
0.9 - 1.3 ft (0.27 - 0.4 m)


Growth Rate

Flower Color

Flowering Season

Native Status

Natural Setting
Elevation ?
1877' - 11067'

Annual Precip. ?
7.6" - 151.1"

Summer Precip. ?
0.28" - 5.63"

Coldest Month ?
23.2° F - 48.8° F

Hottest Month ?
45.5° F - 70.6° F

Humidity ?
0.38 vpd - 22.61 vpd

Soil Description
Adaptable, tolerant of sand, loam and clay

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Largeflower Hawksbeard

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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