# Swamp Milkweed

*Asclepias incarnata subsp. incarnata* L.

The common swamp milkweed, found through most of the range and the only one usually seen in Florida. Nearly every swamp milkweed cultivar on sale descends from this subspecies.

## How to tell it apart

Nearly hairless, or with a line of fine hairs down one side of the stem. Leaves are narrow and smooth, and the flowers are bright pink to white with a paler crown.

## Where it grows

Most common west of the Appalachians, with scattered populations in the Rocky Mountain and Intermountain states, notably along the Snake River in Idaho. Whether those western populations are relicts or introductions is an open question. It is rare in Arizona, Louisiana and Montana.

States: AL, AR, AZ, CO, CT, DC, FL, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, PA, SC, SD, TN, TX, UT, VA, VT, WI, WV, WY



Source: Flora of North America vol. 14 (2023).