Butterfly milkweed, Asclepias tuberosa
States grown: 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, NM, NJ, NY, OH, OK, PA, RI, SC, SD, TN, TX, UT, VA, VT, WI, WV
Butterfly weed is on of the most attractive flowers of not only the milkweed species but some would say its the most wonderful flower in all the garden.
Asclepias tuberosa appears in the September 1932 "Medicinal plant map of the United States of America" published by National Wholesale Druggists' Association. Zoom into Oklahoma for details.
View Butterfly milkweed observations on iNaturalist
View Butterfly milkweed plant information at Wildflower.org
View Butterfly milkweed plant information at Plants.USDA.gov