Swamp Milkweed is native to most areas of the central and eastern United States. It is also known as Rose Milkweed. Plants are typically found along streams and ditches or in moist areas of meadows and prairies. Plants grow 4 to 5 feet tall and have clusters of pink to mauve flowers at the tops of branches. Plants make excellent hosts for monarch butterflies and provide nectar to honey bees, wild bees and other pollinators. Also recommended for rain gardens and bioswales. Seed can have high dormancy. Provide cold stratification for 30 days prior to seeding in spring, or plant in late fall.