Swamp Milkweed (Asclepias incarnata) is a vital host plant for monarch butterfly caterpillars and a top nectar source for pollinators. This beautiful, long-blooming perennial produces clusters of rose-to-deep pink flowers on tall, branching stalks with narrow, lance-shaped leaves. As a wetland-loving species, swamp milkweed thrives in rain gardens, pond edges, and moist soils, making it an excellent addition to wildlife-friendly landscapes.
Key Features:
- Monarch Host Plant: Essential for monarch butterfly caterpillars, providing food for their life cycle.
- Pollinator Favorite: Abundant nectar attracts butterflies, moths, bees, and hummingbirds.
- Long-Lasting Blooms: Rosy-pink flowers bloom from mid-summer through early fall, adding vibrant color and texture.
- Fall & Winter Interest: Tan/brown seed pods develop in fall and persist into winter, supporting birds and beneficial insects.
- Moisture-Loving: Ideal for rain gardens, pond edges, and wet meadows, but also grows well in average garden soils.
- Low Maintenance: Once established, it requires minimal water and no chemicals.
- Deer Resistant: Naturally unappealing to deer, ensuring lasting blooms.
- Pollinator-Safe: Grown non-GMO and free of harmful neonicotinoids, promoting a healthy ecosystem for pollinators and wildlife.
Available in sets of three, six, or 12 plants to suit gardens of any size.
Why Choose Swamp Milkweed?
Swamp Milkweed is a must-have for monarch conservation and pollinator-friendly gardens. Its striking pink blooms, adaptability to wet soils, and role as a caterpillar host plant make it an essential choice for creating a thriving habitat. Whether used in wildflower meadows, butterfly gardens, or rain gardens, this native perennial adds both beauty and ecological value.
Planting Tips:
- Location: Prefers full sun to part shade with moist, well-drained soil; tolerates average garden conditions.
- Watering: Water regularly during the first growing season to establish roots; tolerates drier conditions once mature.
- Maintenance: Minimal care required. There's no need to deadhead the flowers, as allowing them to go to seed provides a valuable food source for birds. Leaving the stems standing in the fall offers overwintering sites for beneficial insects. If desired, cut back the stems in late spring after pollinators have emerged.
For more information on planting, view our How to Plant Your Native Plants guide and other planting tips in the Garden for Wildlife Learning Center.
Plant swamp milkweed and create a pollinator paradise while playing a crucial role in monarch butterfly conservation!