Johnson grass is a serious pest in many parts of the state. Normally thought of as a southern plant it is present as far north as Warren County. An actively moving plant by virtue of rhizomes it will keep moving through a field until controlled. It grows to a height of about 10 feet and has a large seedhead similar to sudan grass.
Photo by Dr. John Meade, weed scientist emeritus
Rutgers NJAES Cooperative Extension
Photo by Dr. John Meade, weed scientist emeritus
Rutgers NJAES Cooperative Extension
Photo by Dr. John Meade, weed scientist emeritus
Rutgers NJAES Cooperative Extension