General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Biennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Partial or Dappled Shade
Water Preferences: Mesic
Dry Mesic
Dry
Minimum cold hardiness: Zone 3 -40 °C (-40 °F) to -37.2 °C (-35)
Flower Color: Lavender
White
Bloom Size: Under 1"
Flower Time: Summer
Late summer or early fall
Underground structures: Taproot
Wildlife Attractant: Bees
Resistances: Drought tolerant
Miscellaneous: Tolerates poor soil

Image
Common names
  • Diffuse Knapweed
  • Barnaby
  • White Knapweed
  • Sparse Knapweed
Botanical names
  • Accepted: Centaurea diffusa
  • Synonym: Acosta diffusa

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