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Asclepias incarnata

Swamp Milkweed

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One of the most beautiful native perennials with clusters of upturned pink flowers on 4-5’ stems in June and July. The leaves of the red milkweed are a preferred food source of Monarch caterpillars. Preferring moist soils, this is a great plant for naturalizing and for use in rain gardens. No butterfly garden is complete without milkweed!

Benefits

Attracts butterflies and hummingbirds
Host and nectar plant for monarch butterflies
Lovely vanilla fragrance
Thrives in sun in average or moist soil
Deer resistant

Homeowner Growing and Maintenance Tips

Easily grown in medium to wet soils in full sun but is surprisingly tolerant of average, well-drained soils in cultivatio. Plants have deep taproots and are best left undisturbed once established. Have patience the leaves are slow to emerge in spring.


Height
3-4 Feet

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Spread
2-3 Feet

USDA Hardiness Zone 3-8

Native Range

Swamps and low meadows; Nova Scotia to Saskatoon, south to Utah, New Mexico and Florida.

Distribution Maps by State and County

Native Trivia

Plants in the milkweed family produce pods with fluffy seeds that are used by birds to build nests. Some birds, such as Baltimore orioles, also use the stem fibers for nesting material.


"Milkweeds provide loads of nectar and serve as a food source for monarch caterpillars."

Good Companions
Rose Mallow (Hibiscus moscheutos), Turtlehead (Chelone glabra), New England Aster (Aster novae-angliae), Dwarf Joe Pye Weed (Eupatorium dubium), Lyre-leaved Sage (Salvia lyrata)

Characteristics & Attributes

Plan Sub Group
Medium to Tall Perennials
Exposure
Filtered Shade
Sun
Soil
Well-drained
Wide soil tolerance
Soil Moisture Preference
Average
Moist
Moist but well-drained
Wet
Attracts Wildlife
Beneficial insects
Butterflies
Hummingbirds
Bloom Time
Late Summer
Summer
Critter Resistance
Deer Resistant
Habitat Collection
Butterfly
Wet Sun
Native Habitat
Riparian, wetland
Foliage Color
Green
Uses
Bog, water garden
Fragrant
Meadow
Naturalizes
Native to
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 Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Vermont
Virginia
West Virginia
Wisconsin
Wyoming