The Evolution of the Burr

We’ve all experienced those annoying burrs that stick to our clothes and dogs, especially in the fall and early spring. Ever wonder what they look like before they become those brown prickly seed pods?

The burdock plant is an invasive weed on North America and other parts of the world. It appears in mid-summer, from July to September. The burr itself can hang on over the winter and into the next growing season.