The milkweeds (Asclepias spp.) are an astonishing group of plants. The eighty-some species, varieties, and subspecies known to occur within the United States have flowers of nearly every color of the rainbow, ranging from magenta to red to pink to orange to yellow to green to white to cream. The genus is widespread, as at least one member of the genus is known from the flora of 49 of the 50 United States (there are no species of Asclepias in Alaska). The flower structure is quite unique, with horns and hoods in addition to petals and sepals. A few of our favorite milkweed photos from our collection are shown below.