This milkweed grows in wet soil. Milkweed plants are the sole food source of the monarch butterfly larva.
Monarch caterpillars on swamp milkweed plant
photos Hester Burch
Flowering Period: May - June
Soil Moisture: moist to wet
Light: full sun to part shade
Soil pH: Prefers neutral to slightly acidic soil but will tolerate heavy clay soils.
Height: 4 to 6 feet