When I committed myself to this project, I had not envisioned combing every square inch of an acre and a half on my hands and knees, but that is what I have done to the tune of at least ten pick-up truckloads of non-native plants going to a recycler.  It is finally finished (nearly me, too), rid of ivy, vinca, blackberries, bamboo, holy, wild strawberry and anything else suspicious. The bamboo was especially challenging as I used loppers to cut down over one thousand of the poles.