Usually you use these going around the Bamboo surrounding the plant.. Well, a lady I'm doing a bid for has a neighbor who had planted Bamboo on the edge of their property. The lady I'm doing the bid for wants me to put a barrier right on the property line so the roots won't encroach on her property. She wants just 5-6linear ft of barrier preventing encroachment. is that enough? Would it be smarter to run a barrier the length of the property line (40-50ft)? Local nusery tells me Bamboo roots can get outta hand.