Butterfly Weed Care Plant butterfly weed in late spring after the soil warms. Do not expect it to bloom the main 12 months; flowering may well just take 3 yrs. Blooms past about two months, from late spring till late summer time. A. tuberosa Butterfly Weed Care Suggestions Butterfly weed https://socialaffluent.com/story3855916/little-known-facts-about-are-milkweeds-annuals-or-perennials