Asclepias verticillata, Whorled Milkweed
A pretty Milkweed that is adored by butterflies, Whorled Milkweed, Asclepias verticillata, 1-2′ stems are topped with fragrant white flowers in midsummer. Its beautifully textured long needle-like leaves turn a bright yellowish orange in fall. Plants are toxic to livestock and humans. A Missouri native perennial, it spreads by seed and rhizomes, but is not invasive.
Easily grown in sunny areas, plants prefer full sun, at least 6 hours a day, and well-drained soil. These tough plants tolerate drought, and high heat and humidity.