Hailing from Eurasia, great burdock (Arctium lappa) is a stunning, biennial wildflower that regrettably moonlights as an invasive weed in the U.S. That's because its seeds remain viable for years ...

Learn about the three main weed classifications—annual, biennial, and perennial—and how they impact garden management.

Some seeds can stick. The idea for Velcro came from a burdock seed, which has little hooks that attach themselves to animal fur. Some seeds can even plant themselves, such as wild oats which drill ...