Eastern Swamp Milkweed
Asclepias incarnata subsp. pulchra
Eastern swamp milkweed distinguishes itself from its close kin through broader, lusher leaves and a denser, bushier habit — a slightly more generous version of the classic swamp milkweed, chosen as North Carolina's Wildflower of the Year in 2005.
Asclepias incarnata subsp. pulchra occupies the same wet-margin territory as the straight species but presents it with more visual mass. Found in bogs, marshes, and wet sites along the coast, Piedmont, and mountains of North Carolina, it grows 2 to 4 feet tall with a bushier, more branched character than its parent. The flowers run to deeper pinks, though the plant is notably variable in color — some individuals approach red-purple, others are soft rose. The 5-inch seed pods persist well into winter, adding a sculptural note to the bare garden.
For practical purposes, this subspecies behaves much like Asclepias incarnata in cultivation: it tolerates clay soils, adapts to full sun or partial shade, and performs well in low-lying areas of the garden that retain moisture. It is pollinated by bees and serves as a host plant for monarch butterflies. The heat tolerance noted for this subspecies makes it particularly useful in gardens where summer temperatures push hard. Plant it at the edge of a pond or rain garden, or in any low spot that holds water after rain, and it will settle in with a naturalness that feels like it has always been there.
Eastern Swamp Milkweed
Asclepias incarnata subsp. pulchra