Though milkweed has flower clusters like Joe Pye weed, they bear a Exclusive arrangement called umbel inflorescence. In May possibly or June, 4-leaved Milkweed blooms with one to three rounded clusters of pale pink or white flowers within the tip from the plant. The flowers could be upright or drooping. https://bookmarkingdepot.com/story18328898/is-swamp-milkweed-a-perennial-secrets