Asclepias Sullivantii Illinois. Here is information about seven species native to illinois. Prairie milkweed asclepias sullivantii somewhat resembles common milkweed asclepias syriaca in appearance but the former species has flowers that are slightly larger in size and its leaves are hairless on their undersides.
I m in urbana illinois and starting to grow incarnata 2 plants and sullivantii 2 plants which i obtained from a local group called grand prairie friends. Packet includes about 50 seeds. Asclepias sullivantii milkweed family asclepiadaceae click on an image for a higher resolution photograph.
Wrong site location or crowding may have caused the other milkweed plants to die out.
In 2019 only common milkweed remained. Of species in genus in illinois. Prairie milkweed asclepias sullivantii somewhat resembles common milkweed asclepias syriaca in appearance but the former species has flowers that are slightly larger in size and its leaves are hairless on their undersides. This rare native milkweed is similar to common milkweed but has larger showier deeper pink flowers.