Asclepias perennis (Aquatic Milkweed)

Asclepias perennis (Aquatic Milkweed) is an erect perennial boasting flat umbels packed with up to 20-50 white starry flowers, often pinkish along the undersides towards their tips. Blooming from late spring to fall for about 4-8 weeks, the mildly fragrant flowers are a great source of nectar for butterflies, bees, and other beneficial insects. The blooms occur on upright purplish-green stems clad with opposite, short and narrow, green leaves, 3-5 in. long (7-12 cm). They give way to smooth pendulous seed pods that split along a single suture to release the seeds. Unlike most Asclepias species which have fluffy seeds that are dispersed by the wind, Aquatic Milkweed has winged seeds that are designed to float on the surface of the water and are dispersed with flood events. Found in areas with soils that are continuously wet such as floodplains, waterway margins, marshes, cypress swamps, ditches, and wetlands, Aquatic Milkweed is a great choice for the bog garden.