Apocynaceae
Asclepias incarnata subsp. incarnata
Asclepias incarnata subsp. incarnata
Also known as Asclepias incarnata f. rosea, Asclepias incarnata var. glabra, Asclepias incarnata f. albiflora, Asclepias verecunda
Flowering Plants · Native Plants · Milkweed · Monarch · Pollinator · Native · Wetland · Perennial · Butterfly · Wildflower · Prairie
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.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Water deeply to keep soil consistently moist but not waterlogged · Every 7-10 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 5–8
- Temperature
- -30°F to 90°F
- Cycle
- Perennial
Hardiness
USDA 4a-9b
Form & growth
Mature size and habit
- Mature height
- 2 ft – 4 ft
- Spread
- 3 ft
- Spacing
- 18 in apart
- Growth rate
- Moderate
- Root depth
- Deep
- Flowers
- Yes
- Foliage
- Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- Alabama, Arkansas, Colorado, Connecticut, Delaware, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Manitoba, Maryland, Masachusettes, Michigan, Minnesota
- Attracts
- Bees, Butterflies, Hummingbirds, Moths
Sources: trefle, usda
More Asclepias
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Pleurisy-root
Asclepias tuberosa
Full Sun · Moderate · Slow
Asclepias tuberosa subsp. rolfsii
Asclepias tuberosa subsp. rolfsii
Full Sun · Moderate · Slow
Asclepias tuberosa subsp. tuberosa
Asclepias tuberosa subsp. tuberosa
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Swamp milkweed
Asclepias incarnata
Full Sun · Moderate · Moderate
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