It's easy to drive right by large incursions of Japanese knotweed and not realize what it is. The best primer on Japanese knotweed is the video from our June 5th walking tour, where Donna Ellis gave us the basics. Next time you drive down Welles St. or Naubuc Ave., see if you can spot it. Note how aggressive the growth is, the density of the incursion and how other plant growth is completely blocked out. Here are some hints to help you spot it, followed by a link to the walking tour video: