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Asclepias subulata
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Skeleton Milkweed
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Asclepias subulata

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About Skeleton Milkweed (Asclepias subulata) Asclepias subulata is a species of milkweed known commonly as the rush milkweed or ajamete. This is an erect perennial herb which loses its leaves early in the season and stands as a cluster of naked stalks. Atop the stems are flower clusters of distinctive flowers. Each cream-white flower has a reflexed corolla that reveals the inner parts, a network of five shiny columns, each topped with a tiny hook. The fruit is a pouchlike follicle that contains many flat, oval seeds with long, silky hairlike plumes. This milkweed is native to the desert southwest of the United States and northern Mexico.
Plant Description
Plant Type
Perennial herb

Flower Color
Cream, Yellow, White

Flowering Season
Spring, Summer, Fall, Winter

Native Status

Natural Setting
Site Type


Elevation ?
-227' - 3642'

Annual Precip. ?
2.7" - 16.6"

Summer Precip. ?
0.23" - 1.89"

Coldest Month ?
48.4° F - 62.1° F

Hottest Month ?
58.8° F - 88.9° F

Humidity ?
2.51 vpd - 42.79 vpd


Landscaping Information
Ease of Care
Moderately Easy

Water Requirement ?
Extremely Low
Very Low
Moderate - High

Common uses
Butterfly Gardens, Bird Gardens

Nursery Availability
Commonly Available

Other Names
Common Names
Rush Milkweed

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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