It is called Climbing Fuchsia, but, while it does need support, it doesn't twine or climb by tendrils, but rather insinuates itself among the branches of its neighbors. It can get quite large. Flowers are also large for a species Fuchsia, but not so large as many hybrids. They are long and narrow, and have red sepals and purple corollas. Not suitable for hanging baskets because it will become leggy in search of places to cling. But it does exceedingly well as a hardy garden plant trained to a fence or trellis.
Similar plants: