It can be a challenge to grow but once established it will thrive for years to come and spread quickly. Perennial. Swamp Milkweed (Asclepias incarnata) is a showier variety of Common Milkweed.

Is Asclepias incarnata invasive?

Swamp Milkweed (Asclepias incarnata)

Asclepias incarnata is a perennial, hardy in zones 3-8 (some reports include zone 9). It is a wetland plant but will do fine in medium moist conditions once established. ... Swamp milkweed is not invasive as some other milkweeds are and is well behaved in the garden.

Does milkweed spread on its own?

It is native to North America and reproduces primarily from seed. Once it is established it can spread from its rhizomatous root system. Common milkweed stems are covered with opposite, oval shaped leaves. ... If you already have common milkweed in the garden, you can prevent further spread by removing immature seed pods.