Swamp milkweed
Asclepias incarnata L.
Also called swamp milkweed.
Clump-forming milkweed for moist soil, with vanilla-scented pink flowers and narrow leaves. A tidy monarch host for rain gardens.
Size over time
Typical landscape size 0.9–1.5 m (3–5 ft) tall and 0.6–0.9 m (2–3 ft) wide; medium growth, about 3 years to maturity. Intermediate sizes use the planner’s growth curve (k = 0.25) from the #1 install size.
Bloom
Dusty pink flowers, Jul–Aug (northern-hemisphere months; timing shifts with region and season).
| Plant | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Swamp milkweed : Jul–Aug |
Design notes
- Unlike common milkweed it does not run.
- Tolerates average garden soil if not allowed to dry out.
Regions
Native range: Eastern and central North America.
Native to these OpenLandscape3D pilot regions:
Native status describes where the species occurs naturally. It is not a promise that it suits a particular garden; site conditions decide that.
Related plants
Plan with Swamp milkweed
Place it in a design, check it against your zone, light and moisture, and see it at year three and year ten.