Alternate Names: Purple Milkweed
Monarch Butterfly (Danaus plexippus)
Many other butterflies use this plant as a nectar source.
Heart-leaf milkweed is found growing in coniferous woodlands and dry rocky slopes. It is native to California, Nevada, and Oregon.
Native Americans used the fibers of this plant to make ropes and nets (Lady Bird Johnson Wildflower Center). The species names refers to the heart-shaped leaves.