Plant types and subtypes: Perennials
Light Requirements: sun, part-sun
Water Use: low
Soil Moisture: dry, moist
Soil Description: average, poor, loam, clay, sand, gravel/rock
Bloom Time: June, July, August
Bloom Color: white
Leaf Color: green
Hardiness Zone: 3, 4, 5, 6, 7, 8, 9, 10
Additional Tags: attracts bees, attracts butterflies, clumping, colonizing, deer resistant, drought tolerant, naturalizing, ornamental foliage, poisonous, rock garden plant, showy fruit
Pricing & Availability
Asclepias verticillataAlso known as:
Rarely growing taller than 2', Asclepias verticillata is one of the shorter milkweeds. Its needle-like foliage is distinctive and gives the plant a delicate and airy appearance. The leaves are whorled - hence the common name - light green, and finely hairy. The whitish flower clusters develop along the leaf axils of the upper part of the plant's stem. In early fall, these give way to attractive seed pods that burst open when ripe, letting the wind disperse the seeds that are attached to white fluffy tufts of hair.
Asclepias verticillata is adapted to dry conditions and full sun. It is best grown in poor, sandy, or rocky soil, where it will not be in competition with other taller species. Whorled milkweed is ideal for use in rock gardens or dry, sunny borders. The root system is rhizomatous, which allows the plant to spread vegetatively and form large colonies. It enjoys a long bloom period, extending for up to 2 months in mid to late summer. Zones 3-10
Propagate by sowing freshly collected seeds in fall. Young plants growing on the lateral roots of mature plants can be separated and transplanted in spring.
As with other milkweeds, the stems and leaves produce a milky sap when damaged that should be considered toxic. This species is particularly toxic to browsing mammals, which makes it unpopular among livestock farmers, but also very deer resistant.
Native Range & Classification
Recorded County Distribution: USDA data
AL, AR, AZ, CT, DC, DE, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, MI, MN, MO, MS, MT, NC, ND, NE, NJ, NM, NY, OH, OK, PA, RI, SC, SD, TN, TX, VA, VT, WI, WV, WY
USDA Endangered Status:
- Special Concern: RI
- Threatened: MA
|Species||Asclepias verticillata||whorled milkweed|