showy milkweed (asclepias speciosa)

plant flower shrub produce leaf herb wildflower tree food evergreen blossom green branch garden fruit vegetable petal showy milkweed asclepias speciosa flowers bloom floral flora cluster stem stalk flowering perennial dogbane apocynaceae west north america united states colorado usa summer warm toxic hirsute pale pink umbellate cyms host butterfly larimer county nature purple leaves blooming beauty july