Spotted Knapweed

Centaurea maculosa Lam.

  • A biennial to short-lived perennial weed that spreads by seed only
  • Grows one to three feet tall, sometimes taller
  • Produces small pink, white, or lavender flowers during summer months
  • Bracts below flower head have dark spots but are not spiny
  • Grows in disturbed soil, rangelands, pastures, meadows and roadsides
  • Cut or mow prior to seed set to reduce current year’s growth, or dig, removing the top 2-6 inches of root
  • Chemical controls are available