Asclepias tuberosa, native to most of North America, except for the northwest.

Asclepias cordifolia, native to the mountains of the west coast states of the United States.

Asclepias purpurascens, native to the central and midwestern United States. / Asclepias cordifolia, native to the west coast of the United States, the heartleaf milkweed.

A milkweed native to the Central and North American tropics, the bloodflower, Asclepias curassavica L.