Treating large infestations of Japanese knotweed does take time. Using stem injections six months later can have some good initial effect, but still requires long term monitoring. (Yes for those keen eyes there is more Japanese knotweed in the background of the second photo! At this visit requested not to treat it, which is why monitoring is also so important to control the activity of the plant.)
An interesting listen – This article includes a discussion on the up-coming Williams vs Network Rail case (claim for compensation by a private property owner living adjacent to a railway embankment with a long-standing JKW infestation); how it has progressed so far and its implications for setting legal precedents for future (potential) claims.
An interesting news story from the BBC about Japanese knotweed. It shows just how important it is to have well informed and sustained control and management of the plant, which is what we offer here at Longfield Knotweed Solutions.