Bull Thistle

Cirsium vulgare

Photo of Bull Thistle
Photo by Dr. John Meade, weed scientist emeritus
Rutgers NJAES Cooperative Extension

Bull thistle is a true biennial. It forms a rosette of leaves the first year and then sends up a flowering stalk the next year. Like other thistles it has sharp spines on stem and leaves. The flower is blue and quite large. Normally a weed of untilled fields.

Additional Images

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