Spotted Knapweed
(Centaurea maculosa Lam.)

 (Use the menu to the left to return to the "Dirty Dozen" main page)


  • 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

Flower
(click for larger view)

Rosette
  • 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

    • rosette    		 Please click on any picture for a larger view.
    Plant


    Sue Donaldson
    University of Nevada Cooperative Extension
    5305 Mill St. Reno, NV 89502
    (775) 784-4848  Email: sue@washoeweeds.org

    Site Problems? Webmaster

    Site Design