Originally Posted by
Tommy
this weed killer does the most damage above the ground. plants with invasive rootsystems will survive. Best you can do in such a case, is remove most of above ground parts and spray what is left. It will slow it down a lot.
there is another option, but requires "Stamina"; a root system survives by getting sugars made by leaves above ground. if you keep on removing new leaves from the invasive plant, it will die eventually. A root system, spread to my whole garden, by a "ton peeb" (the cork tree) took 2 years to die off after removing the tree itself. I removed new sprouts at least twice a week.
also here: no dangerous chemicals for me