Home » Plants » Asclepias incarnata

Swamp Milkweed (Asclepias incarnata L.)

Page contents
Swamp Milkweed


A perennial of wet habitats, native to a wide range across North America.

Range - Expand

Native or Not Present

This tentative map is based on our own research. It may have limited data on Canada and/or Mexico, and there is some subjectivity in our assignment of plants as introduced vs. expanded. Read more in this blog post.


Prefers full to partial sun and moist to wet conditions, and rich soils that hold moisture, but tolerates a moderate range of condition. Tolerates temporary flooding and dry conditions, but cannot tolerate prolonged flooding or drought.

Found in swamps, open areas in floodplains, wet meadows and prairies, near seeps or in drainage ditches. Found both in intact wild areas and disturbed and human-altered habitats.

Swamp Milkweed | Fire Effects Information System (FEIS) (About This Site)

Asclepias incarnata (Swamp Milkweed) | Illinois Wildflowers (About This Site)

Asclepias incarnata (Swamp Milkweed) | USDA PLANTS Database (About This Site)

Asclepias incarnata | Go Botany (About This Site)

Asclepias incarnata (Swamp Milkweed) | Missouri Botanical Garden Plant Finder (About This Site)

Asclepias incarnata | Biota of North America Project (BONAP) (About This Site)

Photo gallery

Photo © stephen, CC BY 4.0.
Photo © Brad Grimm, CC BY 4.0.