Perennial Plant Association Plant of The Year 2017. The glowing orange flowers of this native wildflower are irresistible to hummingbirds, butterflies, and people! This long-lived, tap-rooted plant needs a couple of growing seasons to establish its deep roots and reach mature size. Our uncommon strain of Asclepias is native to clay soils making it adaptable to a variety of clay and loam conditions; the most commonly available plants must be grown in sandy soils. Butterfly Weed is slow to wake up in the spring, but worth the wait! Asclepias tuberosa Native Range: AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, NE, NH, NJ, NM, NY, OH, OK, PA, RI, SC, SD, TN, TX, UT, VA, VT, WI, WV. (Seed propagated.) 15-18" tall x 15-18" wide.