One of the most prolific climbers in the garden is
the lovely Eccremocarpus scaber. It is not desperately hardy, and needs a sheltered position. I have mine growing up a north-facing wall, also a south facing
fence, so it doesn't seem too troubled by the aspect. In very cold winters, it can appear to be killed off, leaving brown, dry stems, but come spring, it
bursts forth into life again and begins to merrily climb for all it's worth! It begins to flower around April or May, and remains in flower more or less
until a decent frost stops it! That means it can potentially be in flower for most of the year. It's very easy from seed, and mine seeds itself all over
the place, especially in gravel!