My 18' x 30' back yard is attached to other similar yards of neighbors. I noticed a few years ago an ivy, which identified as B I. was creeping along each year over each gardens 4' metal link fences and now invading our local shrubs. B. I are lovely in its right place...New England colleges and etc. particularly during the Fall when they turn Red. But like I said its welcomed in those areas. Now, we don't know where it originated, but cutting them does not seem to get rid of them. My Burning bush is completely been taking over by them and I expect glorious color this coming Fall, but....?