Asclepias viridis (Antelope-Horn Milkweed)

50 (80)cm, Antelope-Horn Milkweed is a herbaceous species with upright stems crowned with umbels of greenish-purple flowers above lanceolate to elliptic, alternate leaves. It is native of prairies and humus rich, open spots in woods in the USA (Nebraska, West Virginia, Florida and W Texas). For any humus rich, very well drained, slightly rocky soil in full sun. VII-VIII.
10 seeds per package.