Not all varieties of clematis are evergreen but some – such ... as they add form without taking up too much space,' says Steven Bell of Paving Shopper. Still, do your research first, as this ...

Clematis are fabulous plants for providing vertical colour on walls, fences, ornamental obelisks and through the branches of trees and shrubs. For the best display you'll need to know when to prune.

For instance, vigorous varieties that would quickly get out of hand in a container or engulf a slow-growing shrub are ideal for the walls of a house. And if you want to grow a clematis up a tree ...