Browse our knotweed slide shows below to learn how to identify these invasive plants before they take over your yard, park or rock wall. They are destructive, breaking apart asphalt and entering homes through the foundation. Check out the Knotweed! app to learn more about all four species of knotweed, Japanese, giant, Bohemian (the hybrid of Japanese and giant) and Himalayan (uncommon).
Japanese knotweed is on the list of 100 top invasive species in the world. You can also learn how to manage these plants, what legal issues are common in the U.K. when dealing with Japanese knotweed and their impact on communities. Check out the app and tell us what you think!