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Mojave Woodyaster
Xylorhiza tortifolia
About Mojave Woodyaster (Xylorhiza tortifolia) Nurseries Show All Photos Xylorhiza tortifolia is a species of flowering plant in the aster family known by the common names Mojave-aster and Mojave woodyaster. It is native to the deserts of the southwestern United States, where it grows in canyons and other habitat. It is a perennial herb or subshrub with branching, hairy, glandular stems that reach 60 to 80 centimeters in length. The leaves are linear, lance-shaped, or oval, with pointed or spiny tips and spiny edges. The leaf surfaces are hairy and glandular. The inflorescence is a solitary flower head borne on a long peduncle. The head has a base with long, narrow phyllaries which may be over 2 centimeters long. The head contains up to 60 or more lavender, pale blue, or white ray florets which may be over 3 centimeters long. The fruit is an achene which may be over a centimeter long, including its pappus of bristles.
Plant Description
Plant Type
Perennial herb

Max. Height
2 ft (0.6 m)

Native Status

Natural Setting
Site Type
Dry canyons


Elevation ?
-44' - 6547'

Annual Precip. ?
1.9" - 20.2"

Summer Precip. ?
0.17" - 2.89"

Coldest Month ?
33.7° F - 60.8° F

Hottest Month ?
62.9° F - 89.5° F

Humidity ?
2.28 vpd - 47.01 vpd


Landscaping Information
Ease of Care
Moderately Easy

Water Requirement ?
Extremely Low, Very Low
Extremely Low
Very Low
Moderate - High

Propagation ?
For propagating by seed: No treatment.

Common uses
Groundcovers, Butterfly Gardens, Bee Gardens

Nursery Availability
Rarely Available

Other Names
Common Names
Mojave Aster, Mojave-aster

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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