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Data sources
Swamp Milkweed
Asclepias incarnata · Perennial
Swamp Milkweed is a moderate-growing perennial, hardy in USDA zones 3-6, that matures to about 3–4 ft × 2–3 ft. It does best in full sun with high water needs in well-drained, moist and occasionally-wet soil. Expect pink and white blooms in summer. It attracts butterflies, pollinators and beneficial insects, stands up well to deer and rabbits and wet soil.
- USDA zones
- 3-6
- Sun
- Full sun
- Water
- High
- Mature size
- 3–4 ft × 2–3 ft
- Growth rate
- Medium
- Maintenance
- Low
- Soil
- Well-drained, Moist, Occasionally-wet
- Bloom color
- Pink, White
- Bloom season
- Summer
- Attracts
- Butterflies, Pollinators, Beneficial insects
- Tough against
- Deer, Rabbits, Wet soil
- Toxic to
- People
- Native to
- Northeastern and southeastern United States
Will it survive your winters?
We score Swamp Milkweed’s freeze-trouble range against the real coldest nights your area has recorded.
Powered by ~35 years of daily lows from the nearest NOAA weather station. A risk read, not a guarantee — a sheltered spot or mature plant beats the odds.
More plants for your zone: Zone 3 · Zone 4 · Zone 5 · Zone 6
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