Butterfly Milkweed (Asclepias tuberosa)

''Asclepias tuberosa'' is a species of milkweed native to eastern North America. It is a perennial plant growing to 0.3–1 metre tall, with clustered orange or yellow flowers from early summer to early fall. The leaves are spirally arranged, lanceolate, 5–12 cm long, and 2–3 cm broad.