Asclepias syriaca, are a favorite nectar source for butterflies and are host plants for caterpillars including Monarch butterfly. A stout plant with large leaves, large pink flower clusters and a strong fragrance reminiscent of Lilacs, this Milkweed is a wonderful horticultural plant for landscaping to attract butterflies. It is a good choice for sunny flower beds, very attractive and easily controlled, but becomes weedy in farmers fields. Other common names for asclepias syriaca include Virginia-silk, Algodoncillo, Silky Swallowwort, herbe à la ouate, Seidenpflanze, Common Milkweed, Banana Leaf Milkweed, Tall Milkweed. Grows in sandy, clayey, or rocky calcareous soils up to 5-7' ft Zone 4-9.