Swamp Milkweed is a native perennial wildflower known for its clusters of fragrant, pink to mauve flowers that bloom in mid to late summer. Unlike Common Milkweed (Asclepias syriaca), Swamp Milkweed has a more refined, upright growth habit and thrives in moist environments, making it an excellent choice for rain gardens, wetlands, and pollinator-friendly landscapes.

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Growth Habits & Characteristics:

• Height: 3–5 feet

• Spread: 2–3 feet

• Sun Requirements: Full sun to partial shade

• Soil Preferences: Moist to wet soils; tolerates clay, loam, and sandy soils

• Lifespan: Perennial

• Bloom Time: Mid to late summer (June–August)

• Water Needs: Moderate to high; thrives in wet conditions but can tolerate periodic dryness

• Growth Habit: Upright, clump-forming, with lance-shaped leaves and deep pink flowers

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Host Insect:

Serves as a host plant for Monarch butterfly caterpillars.

Pollinator Importance:

• Attracts a variety of native bees, including bumblebees and sweat bees.

• Visited by butterflies, moths, and hummingbirds seeking nectar.

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Companion Plants:

• Cardinal Flower

• Ironweed

• Buttonbush

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Ecological Importance:

• Monarch Butterfly Habitat: A critical larval host plant, helping sustain Monarch populations.

• Pollinator Magnet: Provides nectar for a diverse range of bees, butterflies, and hummingbirds.

• Erosion Control: Deep roots help stabilize soil in wetland and riparian areas.

• Water Filtration: Helps filter pollutants from runoff in wetland ecosystems.

• Biodiversity Support: Enhances the ecological health of wet meadows, streambanks, and rain gardens.