Comment by rimunroe

I believe cutting every day is counter-productive because it causes it to spread. I’m in Massachusetts. The strategy we’re using is cutting once in early summer. Then we let it grow (completely undisturbed) until right after it flowers in early fall. At that point we cut and inject concentrated glyphosate into the stumps. The idea is to inject the herbicide right as the plant is drawing stuff back into its root system for the winter.