Asclepias incarnata subsp. incarnata
Asclepias incarnata subsp. incarnata
Swamp milkweed thrives in consistently moist to wet soils in full sun to part shade, making it ideal for rain gardens or pond edges. It is a critical host plant for monarch butterflies and attracts a wide range of pollinators. Once established it requires little attention beyond keeping the soil moist and cutting back dead stems in late fall.
Care Level
Low
Sun
Partial Shade
Water
Moderate
Growth Rate
Moderate
Mature Height
24″ – 48″
Soil
loam
Life Cycle
Perennial
Spacing
18″
Watering Schedule
Every 7-10 Days • Water Deeply To Keep Soil Consistently Moist But Not Waterlogged
Soil pH
5 – 8
Temperature
-30° – 90°F
Mature Spread
up to 36″
Root Depth
Deep
Foliage
Coarse
Native to
Attracts
Sources
Data: trefle, usda
No nurseries currently have this species in stock.