There is absolutely no harm in leaving the plant stalks in position, though this encourages rampant self-seeding, which is frequently not wanted. Never mulch above the root crowns, as this can endorse rot. How and When to Plant Butterfly Weed Butterfly weed is often a hardy perennial that could be https://what-is-a-milkweed-plant97530.pointblog.net/the-best-side-of-are-milkweed-plants-annual-or-perennial-73034798