Common Name: Swamp Milkweed
Type: Herbaceous perennial
Zone: 3 to 6
Height: 4 to 5 feet
Spread: 2 to 3 feet
Bloom Time: July to August
Blooms: White, pink, mauve
Features: Will Naturalize. Tolerates Wet Soil. Rain Garden. Fragrant. Attracts Butterflies. Deer Resistant.
Asclepias incarnata, commonly called swamp milkweed, is an erect, clump-forming plant which is commonly found in swamps and wet meadows. Tight clusters (umbels) of small, fragrant, pink to mauve flowers appear in at the stem ends in summer. Narrow leaves are 3-6" long. Stems exude a toxic milky sap when cut. Flowers are followed by attractive seed pods which split open when ripe releasing silky-haired seeds easily carried by the wind. Flowers are very attractive to butterflies as a nectar source. In addition, swamp milkweed is an important food source for the larval stage of Monarch butterflies.
Sunny borders, stream/pond banks, butterfly gardens. A good plant for low spots or other moist areas in the landscape.
Sun: Full sun
Water: Medium to wet
Easily grown in medium to wet soils in full sun. Surprisingly tolerant of average well-drained soils in cultivation even though the species is native to swamps and wet meadows. Plants have deep taproots and are best left undisturbed once established. Foliage is slow to emerge in spring.
No serious insect or disease problems.
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