Asclepias purpurascens
Asclepias purpurascens (also known as the purple milkweed) is a species of milkweed plant.  The species Asclepias cordifolia is also sometimes called purple milkweed.  It belongs in the subfamily Asclepiadoideae.  It is native to North America.  It blooms from June to July.  The flowers are a pink-purple color.  This species is found in savannas, prairies, and meadows.  Purple Milkweed likes to grow in clay or sandy soil and in sunny or partly shaded places.  It grows to a height of 0.6 to 1.2 meters (2–4 feet).