Swamp Milkweed

Asclepias incarnata L.

Milkweed family

Plant Type
Forb/herb
Life Cycle
Perennial
Mature Height
4.9 feet
Spread
29 inches
Flower Color
Red
Bloom Time
Fall

Growing Conditions

Shade Tolerance Intolerant
Water Use High
Clay Soil Yes
Sandy Soil No
Drought Tolerance None
Flood Tolerance High
Fire Tolerance Low
Salt Tolerance None
pH Range 5.0 – 8.0

Ecosystem & Wildlife

Pollinators Native Bees; Bombus; Honey Bees; Beetles, Wasps, Flies; Moths; Butterflies; Monarchs; Nesting and Structure (Bees); Larval Host (Monarch); Larval Host (Butterfly); Larval Host (Moth); Hummingbirds
Larval Host Danaus gilippus, Danaus plexippus, Trichordestra legitima
Fall Color No
Evergreen No

Native Range

  • USA:  Alabama, Arkansas, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode I., South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, West Virginia, Wisconsin, Wyoming
  • CAN:  Manitoba, New Brunswick, Nova Scotia, Ontario, Prince Edward I., Québec
  • MEX:  Mexico Northeast

Regional Native Status: L48 (N), CAN (N)

State-level native status is based on data available through Plants of the World Online. Regional Native Status comes from the USDA Plants Database. For more detailed native status information, please refer to BONAP.

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