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Asclepias subverticillata (Horsetail milkweed) | NPIN

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Asclepias subverticillata

Asclepias subverticillata (A. Gray) Vail

Horsetail milkweed, Poison Milkweed

Asclepiadaceae (Milkweed Family)

Synonym(s): Asclepias galioides

USDA Symbol: ASSU2

USDA Native Status: L48 (N)

A plant forming feathery clumps or patches and bearing white, star-like flowers in round umbels and 3-5 very narrow leaves in whorls at nodes; sap milky.


From the Image Gallery

No images of this plant

Plant Characteristics

Duration: Perennial
Habit: Herb

Bloom Information

Bloom Time: May , Jun , Jul , Aug , Sep


USA: AZ , CO , ID , KS , MO , NE , NM , NV , OK , TX , UT , WY
Native Distribution: Idaho, Nevada, and Arizona east to Missouri and south to Texas and Mexico.
Native Habitat: Sandy or rocky plains and desert flats and slopes; common along roadsides.

Value to Beneficial Insects

Special Value to Native Bees
Special Value to Bumble Bees
Special Value to Honey Bees
Supports Conservation Biological Control

This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Sibley Nature Center - Midland, TX

Recommended Species Lists

Find native plant species by state. Each list contains commercially available species suitable for gardens and planned landscapes. Once you have selected a collection, you can browse the collection or search within it using the combination search.

View Recommended Species page

Additional resources

USDA: Find Asclepias subverticillata in USDA Plants
FNA: Find Asclepias subverticillata in the Flora of North America (if available)
Google: Search Google for Asclepias subverticillata


Record Modified: 2007-01-01
Research By: TWC Staff

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