Spotted Knapweed

Centaurea maculosa

Photo of Spotted Knapweed
Photo by Dr. John Meade, weed scientist emeritus
Rutgers NJAES Cooperative Extension

Spotted knapweed is a serious weed of rangelands in the far west but in New Jersey it is a roadside weed. It flowers late and furnishes local color in the summer time. It has been on the increase in recent years.

Additional Images


  1. Rutgers
  2. Executive Dean of Agriculture and Natural Resources
  3. School of Environmental and Biological Sciences