I'm establishing my pollinator garden. Have my wintersown Anise Hyssop and Asclepias incarnate out. Species Echinacea will be out soon. Was doing some net surfing and found this article about Tropical Milkweed from a site called the Wild Seed Project whose goal is returning native species to Maine. The WSP said that even up in Maine Tropical Milkweed (Asclepias curassavica) can confused monarchs.

Tropical Milkweed not recommended for butterfly gardens

Wild Seed Project--Monarchs