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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

• Large Image of Spotted Knapweed

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Original Photographs and Image Descriptions:

Dr. John Meade
Weed Scientist Emeritus
Dept. of Plant Biology & Pathology
Rutgers, The State Univ. of NJ
59 Dudley Road
New Brunswick, NJ 08901-8520