Butterfly weed provides nectar and food source for butterflies and butterfly larvae. Drought tolerant.
A personal favorite, Asclepias tuberosa produces bright orange-clustered flowers. This butterfly magnet does well in average, dry soil in full sun to part shade; superbly drought tolerant. Unlike other milkweeds, this species does not produce a milky-sap when bruised or broken.
For more information on this plant, visit the USDA PLANTS Database: http://plants.usda.gov/java/profile?symbol=ASTU