The stems are if not clean, vivid eco-friendly, and often covered with darker places or streaks. Parts in the stem bearing leaves seem to zigzag from node to node and form dense thickets. Japanese knotweed (Fallopia japonica) can be an invasive perennial and noxious weed in PA. This article will https://japaneseknotweedcontrol75308.bloguetechno.com/not-known-factual-statements-about-japanese-knotweed-control-73570380