Asclepias sullivantii
Asclepias sullivantii

Sullivant's Milkweed

Sullivant's Milkweed (Asclepias sullivantii), also known as Prairie Milkweed, is a long-lived perennial and very similar to Common Milkweed. However, Sullivant's Milkweed is less aggressive, has smooth succulent-like leaves and the flowers are typically a uniform pink.  It is one of the best milkweeds for attracting butterflies, especially Monarchs. It is a host plant for their larvae. It is also visited by hummingbirds and a variety of other pollinators, as well. 

  • Height: 85-120 cm (30-48 in)
  • Spread: 60 cm (24 in)
  • Cold Hardiness: Zone 3-7
  • Sun or Shade: Minimum 6 hours of direct sun
  • Bloom Time: June through August
  • Leaf Colour: green
  • Bloom Colour: pink
  • Critter Resistance: deer and rabbits
  • Nature Attraction: butterflies

Growing and Maintenance Tips

Prairie Milkweed makes a nice addition to any sunny medium to medium-moist butterfly garden. After a few years the taproot will extend very deep, protecting the plant in times of drought, but also making it difficult to move so choose your spot carefully.