I am beginning to believe it is actually a matter of personal preference. I believe as Doris had mentioned that the only real benefit to cutting opposed to die back is to help elimanate soil borne disease and cut back on insects wintering over in foliage. I like to have a clean garden come spring so I can get right on weed control so by cutting in the fall this will give me more time in the spring to work on weeding.I hate weeds but the always seem to get away from me by late July/early August.
