Asclepias incarnata is a perennial herb to 1.5 m tall, stems leafy, branched above, stems single or clumped, sap milky.
Leaves opposite, to 20 cm long, lance-shaped, tip pointed, base blunt to slightly lobed.
Flowers pink about 0.8 cm, in umbrella-shaped clusters insect pollinated, July- Aug.
Fruit dry pods, narrow, to 9 cm, long pointing upwards, finely hairy, splitting open length-wise to release flat, brown seeds with white plumb, wind dispersed through autumn. Plants occasionally fed upon by Chrysomelid beetles (Labidomera clivicollis) and larvae of monarch butterflies (Wilbur 1976; Bhowmik and Bandeen 1976; Dillon and Dillon, 1972).
Wetland status: OBL.
Frequency in NYC: Occasional.
Habitat Open, undisturbed wet areas, marshes, tolerate soil pH 5-8.