Asclepias Speciosa, or more commonly know as Showy Milkweed, is a forb/herb (a forb/herb is a non-woody plant that is not a grass) with green foliage and white flowers of the genus Asclepias. It has a moderate growth rate and a height of 6 feet at maturity. Its duration is perennial which means it will grow year after year. It's active growth period is spring and summer, blooms during early summer and is intolerant of shade. Asclepias Speciosa or Showy Milkweed's floral region is North America US Lower 48, specifically in the states of Arizona, California, Colorado, Iowa, Idaho, Illinois, Michigan, Minnesota, Montana, North Dakota, Nebraska, New Mexico, Nevada, Oklahoma, Oregon, South Dakota, Texas, Utah, Washington, Wisconsin and Wyoming.
Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming