Check your local garden center or purchase plants online from reputable retailers. If you prefer to start plants from seed, swamp milkweed seeds are available, too.

Butterfly milkweed (Asclepias tuberosa) is one of the tamer milkweeds with lots of ornamental appeal. This adaptable milkweed is hardy in zones 3-10 and was named the 2017 Perennial Plant of the Year.