This is Asclepias Tuberosa Gay Butterflies. You will enjoy the dazzling display and so will the butterflies. The blossoms are bursting with color and the blooms are several inches across. This is a nectar sources for the Gray Cooper, Banded Hairstreak, and Phaon Crescent butterflies. 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 8.