Asclepias incarnata (Swamp milkweed)

Cultivation

Grow in moist, fertile soil in full sun. Suitable for use near a pond or stream. Foliage is slow to emerge in spring. Best if left undisturbed once established. Flowers attract bees, butterflies, and hummingbirds.

Suggested uses

Beds and borders, Cottage/Informal, City, Low Maintenance, Wildflower, Wildlife, Waterside

UK hardiness

H4

USDA zones

Zone 3, Zone 4, Zone 5, Zone 6

Sunset zone

4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 1, 2, 3

WUCOLS

North-Central Coastal = Unknown
Central Valley = Moderate/Medium
South Coastal = Unknown
South Inland = Unknown
High and Intermediate Desert = Unknown
Low Desert = Unknown

Foliage

Deciduous

Habit

Upright, Clump-forming

Native to

Southeastern United States, Northeastern United States

Drought tolerant

No

Flood tolerant

Yes

Toxicity

Sap is toxic if ingested.