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Swamp Milkweed

Asclepias incarnata

Milkweeds are the only host plant for the Monarch butterflies, meaning caterpillars can only eat milkweed plants. Marsh Milkweed is a great choice for the garden as it is the among the easiest milkweeds to grow and is very well behaved. It grows in average or wet conditions and does not spread like common milkweed. It's one of the top milkweeds for attracting monarch caterpillars. Marsh milkweed is covered in deep pink flowers in midsummer that attract monarch, milkweed bugs, and many more pollinators.

Details

Height36” - 60”
Spread24"
Bloom SeasonJune – August
Soil Types
clayClay
loamLoam
sandSand
Soil Moisture
mediumMedium
moistMoist
wetWet
Sun Exposure
fullSunFull Sun

Range Map

Available
Not available

Ecological Benefits

Maintenance Tips

  • Towards the end of summer, milkweeds may get oleander aphids, small yellow insects which cover stems and flowers. They will not harm the plant and can be left alone or removed by hand.
  • Similarly, bright orange Large Milkweed Bugs (Oncopeltus fasciatus) may visit and feed on your plants. This will not harm the plant.
  • Milkweed seed pods can be easily collected, saved, and shared to propagate this powerful pollinator plant.

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