George de Mestral arrived home with his dog from a hunting trip in the Swiss Alps. As he pulled burrs loose from his clothing and his dog's fur, he took the time to study a burr under his microscope. This was 1941. By 1955, with manufacturing perfected and patents in place, Velcro was introduced to the world.
I found Common Burdock, Arctium minus, growing in the same field as the Black-eyed Susans from Sunday's post.