This used to be a forsythia. It got taken over by these wild roses. I look around the yard at the brook's edge and they are everywhere, blooming, blooming. I guess they're invasive, if roses can really be called invasive. I remember once, years ago, pruning some of it - before blooming began - and I threw it toward the brook in an area where we tended to throw clippings. When June came, they bloomed. They were just cut branches, and they bloomed! I tell the truth.
That would be scary if it was anything but roses.
And right now, the air is sweet with them. So, I pruned some up-sticking canes from this big weed-bush and now it's nice and neat. Bloom on!