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Home  /  Plants  /  Budburst Species  /  Asclepias verticillata
Phenology Observation Sheet for Wildflowers and Herbs

COMMON NAME

Whorled Milkweed

SCIENTIFIC NAME

Asclepias verticillata

Plant family

Dogbane (Apocynaceae)

Plant group

Wildflowers and Herbs

A grassland herb with many slender and small leaves, the stems reaching 1-3 feet.
26 reports
10+
OBSERVERS
26+
OBSERVATIONS
!

Identification hints

Whorled milkweed is single-stemmed and unbranching, occasionally can be sparingly branched halfway up the stem.
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The whorled milkweed is a later blooming milkweed that is also one of the most broadly distributed in the United States.
DISTRIBUTION IN TH U.S.
Alabama , Arkansas , Arizona , Connecticut , District of Columbia , Delaware , Florida , Georgia , Iowa , Illinois , Indiana , Kansas , Kentucky , Louisiana , Massachusetts , Maryland , Michigan , Minnesota , Missouri , Mississippi , Montana , North Carolina , North Dakota , Nebraska , New Jersey , New Mexico , New York , Ohio , Oklahoma , Pennsylvania , Rhode Island , South Carolina , South Dakota , Tennessee , Texas , Virginia , Vermont , Wisconsin , West Virginia , Wyoming
HABITAT
This milkweed can be found in sandy or rocky soils of prairies, badlands, flood plains, and open woods.
ATTRIBUTES
Leaves
Leaves are narrow (about 2-3" long and just 2-3 mm. across) and without leaf stalks (sessile), arranged in whorls of 4-6 along the stem.
Flowers
Flowers of the whorled milkweed are about ¾–1½" across and greenish-white, arranged in flat topped clusters. The flower clusters originate from the leaf axils on the upper part of the stem. The flowers have hoods and horns, and the petals are strongly bent downwards, covering the sepals.
Fruits
Fruit is a seedpod that opens along one side (follicle), about 2½-4½" long and rough textured. The flat oval-shaped seeds have a large white tuft of hair attached.
Bloom Time
Blooming from May to September

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