Horsetail Milkweed Asclepias subverticillata 20 Seeds

Asclepias subverticillata, commonly known as horsetail milkweed or western whorled milkweed, is a perennial herb in the dogbane family (Apocynaceae), native to the arid and semi-arid regions of western North America. It typically grows 1 to 3 feet tall, with slender, upright stems and narrow, linear leaves arranged in whorls along the stem, giving the plant a delicate, airy appearance. In summer, it produces clusters of small, white to greenish-white flowers that attract butterflies, bees, and other pollinators. Like other milkweeds, it exudes a milky sap containing toxic cardiac glycosides, which make it unpalatable and potentially harmful to livestock but provide chemical protection for monarch butterfly larvae that feed on its foliage. Asclepias subverticillata thrives in dry grasslands, open woodlands, and disturbed soils, tolerating drought and poor conditions. Its graceful form, ecological importance, and value to pollinators make it an interesting and resilient component of native plant landscapes in the American West.