lasts intact for about 5 months, no longer.  mine grew increasingly bedraggled,  and gradually  disintegrated until it was just a bunch of rags flapping in the wind by  7 months.  i nevertheless bought it again to take me through another six months.  its one advantage is that it's easy to put up.  and it looks acceptable for a few months as long as the weather holds.   i am waiting for a hedge to grow in...........