I'm sure you get a lot of questions on this subject. How do I contain/eradicate it? This all began after Tropical Storm Irene. We live on the Rock River in Newfane.
Windham County Vermont
Hello: Here is a link to information on Japanese Knotweed - https://www.vtinvasives.org/invasive/knotweed-japanese It is tough to get rid of, but persistence is the key. Hope this helps!