Sometimes treating Japanese knotweed can seem like forever, especially when mortgage companies require at least a five year management plan. If home owners have been treating it themselves or its been damaged often it will take a number of seasons to stop seeing any regrowth in the area.
Here is a mature stand of Japanese knotweed. It hasn’t had any prior treatment and readily took the chemicals in two visits last year. This year there wasn’t any trace of the plant. I LOVE JOBS LIKE THIS!