I am looking for something to add height to the side of my house that gets no direct sunlight at all. I would like a flowering vine if possible, and would like something that won't get over 10-15 feet tall at the most. It seems like every vine I read about gets to 20-50 feet. I don't want something that will take over the entire side of the house. I'm in the Atlanta area, zone 8. It is a well drained area, but does have clay soil. Thanks for any suggestions.