This is a well-mannered plant. It forms a clump and does not spread. Some varieties of milkweeds do not stay put. Butterfly milkweed is a Kansas and Missouri native plant. I enjoy this plant the most when traveling through the Flint Hills in the late spring and early summer as the roadsides Butterfly got milkweed shirt and ditches are aglow with the fiery orange flowers. It grows best in well drained soils but will tolerate poor soil conditions. As a native it is extremely drought tolerant.