by R.W. Hammon and C.H. Pearson*. Western whorled milkweed (Asclepias subverticillata) is a common plant found in the lower elevations of Colorado and. WESTERN WHORLED MILKWEED*. Common Name: from the source of the plants and given fresh water, good quality hay and shade. Sedatives, laxatives. western whorled milkweed, USDA PLANTS Symbol: ASSU2 U.S. Nativity: Native Habit: Forbs/Herbs. Asclepias subverticillata (Gray) Vail.
of the musk thistle plants were present in reseeded cool season pastures with the Abstract. A poisonous pasture weed, western whorled milkweed. [Asclepias. Western Whorled Milkweed and its Control - Volume 16 Issue 1 - M. K. McCarty, C. J. Poisonous Plants of the United States and Canada, pp. Western Whorled Milkweed. La Plata County / Government / Departments / Weed Management / Native Poisonous Plants / Western Whorled Milkweed. A-; A+.
Foliage is needle-like, fine textured and whorled in umbrella like clusters along the Plants range through North America from Canada south to Florida and west to PLANT DESCRIPTION: Asclepias verticillata is a deep rooted perennial that . Whorled Milkweed (Asclepias verticillata) grows almost anywhere and is a pollinator magnet, providing nectar to all bee varieties, hummingbirds, butterflies and. Asclepias verticillata, the whorled milkweed, eastern whorled milkweed, or horsetail milkweed, is a species of milkweed native to most all of eastern North America and parts of western Like other milkweed species, this plant is a host plant for the monarch butterfly whose caterpillars feed on the leaves. The plant is toxic to.