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Prairie Milkweed

Asclepias sullivantii

Prairie Milkweed, also called Sullivant's Milkweed, features a compact, clumping form, making it a more manageable option for smaller gardens or formal plantings compared to its more expansive cousin, Common Milkweed. It produces clusters of rich pink flowers in the summer, which are highly attractive to monarchs and other pollinators. The blooms are followed by smooth, green seed pods that add a decorative touch as they mature and open. This species is particularly noted for its glossy, thick leaves, which are less prone to drooping in hot, dry conditions.

Details

Height36” - 48”
Spread12"
Bloom SeasonJune – August
Soil Types
clayClay
loamLoam
Soil Moisture
mediumMedium
Sun Exposure
fullSunFull Sun

Range Map

Available
Not available

Ecological Benefits

Maintenance Tips

  • Prefers consistently moist soil; adequate water is crucial, especially in dry conditions.
  • Deadhead flowers to encourage additional blooming and prevent self-seeding if desired.
  • Thrives in moist, well-drained soils; tolerates heavier clay soils better than other milkweed species.
  • Divide clumps in early spring every few years to rejuvenate and propagate the plants.
  • Manage seedlings by allowing them to grow where they are wanted and removing where they are not.
  • Milkweed seed pods can be easily collected, saved, and shared to propagate this powerful pollinator plant.

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