Spiny Pigweed

Amaranthus spinosus

Photo of Spiny Pigweed
Photo by Dr. John Meade, weed scientist emeritus
Rutgers NJAES Cooperative Extension

There are many species of pigweed and they are weed pests in several cropping systems. Amaranthus spinosus, spiny amaranth, has sharp, strong spines on the stem. A. graecizans breaks off at the ground line and being round shaped is blown around by the wind.

Additional Images


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