Beggar Ticks

Bidens spp.

Photo of Beggar Ticks
Photo by Dr. John Meade, weed scientist emeritus
Rutgers Cooperative Extension

The awns of this plant have barbs which attach the seed to socks and trousers and irritate the skin. Found in wet areas. One species is known as Spanish Needle because the seed is long and thin.

Additional Images


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