Butterfly Weed Treatment Plant butterfly weed in late spring once the soil warms. Do not expect it to bloom the very first year; flowering might consider 3 many years. Blooms very last about two months, from late spring until finally late summer months. A. tuberosa By clicking “Accept All Cookies”, https://andrenzjse.mybuzzblog.com/10540980/top-guidelines-of-is-milkweed-a-weed-or-a-flower