If you're looking for the best fast-growing climbing plants, then you should turn your attention to annual climbers. It is simply extraordinary what a humble seed can grow to in the course of a year.
You come to expect the reliably exponential growth from perennials, which have years, sometimes decades in the ground to establish themselves and improve their performance year on year. But climbing annuals simply get one shot, and so they don't save anything till later, throwing out all of their best performances in one season.
