Smooth Blue Aster

Symphyotrichum laeve

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  • Common name
    Smooth Blue Aster
  • Latin name
    Symphyotrichum laeve
  • Plant type
    perennial
  • Flower color
    Lavender-blue to violet with yellow centers
  • Bloom time
    Late summer to fall
  • Height
    24–48"
  • Chelsea chop
    Yes
  • Light requirements
    Full sun to part shade
  • Moisture
    Average to dry (very drought-tolerant once established). It is highly versatile and handles sand, loam, and heavy clay loam well, provided it has good drainage. It is extremely drought-tolerant.
  • Native to Ontario
    Yes
  • Locally native
    Yes
  • Deer resistant
    Yes
  • Ecological benefit
    Hosts many specialist and generalist species, including: Pearl Crescent butterfly, Silvery Checkerspot. Numerous moth species (asters are major larval hosts).
  • Notes
    Critical late-season nectar source for bees and butterflies. Supports migrating monarchs fueling up before departure. One of the most important genera (Symphyotrichum) for supporting insect biodiversity.
  • Picture
    Smooth Blue Aster