Asclepias tuberosa is a species of milkweed native to eastern North America. It is a perennial plant growing to 0.3-1 m (1-3 feet) tall, with clustered orange or yellow flowers from early summer to early fall.

 This plant favours dry, sand or gravel soil, but has also been reported on stream margins. It requires full sun.

It is commonly known as Butterfly Weed because of the butterflies that are attracted to the plant by its colour and its copious production of nectar. It is also the larval food plant of the Monarch butterfly.