This is Asclepias speciosa, also known as Greek Milkweed, and Showy Milkweed. This plant likes to live in the full sun where it attracts all sorts of bees, butterflies, and birds. This is a larval host plant of the Monarch butterfly. This perennial plant can get up to 6 feet high in good conditions, and sports gorgeous pink, rose and purple blossoms. This plant is less spreading and more manageable than most of the other milkweeds. Asclepias in general are documented nectar sources for the Monarch, Orange-edged Roadside-Skipper, Dina Yellow, Carus Skipper, Eastern Tiger Swallowtail, and Falcate Metalmark butterflies. It is also the nectar source for the Clarks sphinx, and Milkweed Tussock moths. USDA Hardiness Zones 3 to 9.