Certified GKH Gardening Expert
Have you had it long? Unless you have an extra acreage of land for it to ramble, I would get rid of it, and soon. It is on my list of garden thugs.
Autumn clematis is pretty and fragrant when it blooms but if you don't cut the seedheads off before they mature, you are asking for trouble. They come up everywhere, in the lawn, in your garden beds, and they manage to find all your shrubs and climb up those, too.