Native Plants

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Cressler, Alan

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

84 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Fruit Type: Follicle

Bloom Information

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

Distribution

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

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

National Wetland Indicator Status

Region:	AGCP	AK	AW	CB	EMP	GP	HI	MW	NCNE	WMVE
Status:	FACU		FACU			FACU		FACU		UPL

This information is derived from: U.S. Army Corps of Engineers. (2023). 2022 National Wetland Plant List, version 3.6. U.S. Army Engineer Research and Development Center, Vicksburg, MS. https://wetland-plants.usace.army.mil/. Click here for map of regions.

From the National Organizations Directory

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

Native Plant Center at Westchester Community College, The - Valhalla, NY

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

Metadata

Record Modified: 0000-00-00
Research By: TWC Staff

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