Butterfly Milkweed Plant Tray-36 Plugs. Includes 36 plants of Butterfly Milkweed, Asclepias tuberosa to enhance your pollinator plot. Click on mix title to place and order. Ships every two weeks to MN, WI, IA, IL, MO, IN, MI, OH, WV, PA, ND, SD, NE, KS. Updated 2023.