We have a passionflower here, Quimper in Finistere. It grows like a weed covering the entrance to the garage. It does die back a bit in winter. I hack it back a lot in the autumn, (it is trying to cover the rhododendron next to it), and from time to time in the summer. If it wants to it grows very rapidly. It does have fruit which are edible but don't really taste of much. It layers and also self seeds itself. I don't mind the flowers are terrific. It can behave like a trifid though.