Keep track of and Repeat Inspect the realm weekly, and clip off any new shoots that look. This is certainly A necessary move, as chopping tends to stimulate Japanese knotweed into new growth. So you shouldn't cut Japanese knotweed Unless of course you remain on top of the new shoots, https://tvsocialnews.com/story5913506/5-simple-techniques-for-japanese-knotweed-specialist-control