This fall when my kids are done with playign outside I want to rip up their ivy covered teepees and start over with something less rambunctious. I had kept the ivy undercontrol with a carefully placed ring or plastic and river rock but who knows how long that will last.... To prevent the ivy from taking over my woodland I want to replace the ivy with a fast growing but polite perenial vine - preferably evergreen, that can tolerate shade (dappled shade now but in a few years the trees will be big enough that it will be deep shade....) Flowering is not necessary, the teepees are 6 feet tall.