Clematis

Raised by Jackmans back in 1875, 'Belle of Woking' has attractive double flowers that are silvery mauve when they open, fading to silvery grey. They appear throughout the summer and remain fully double. To prune, remove any dead or weak stems in late winter or early spring and cut remaining stems back to the highest pair of strong-growing buds. To encourage blooms to cover the whole plant, train the stems so that they are evenly spaced on their support. As new growth appears in mid-spring, train this to fill any gaps. Plant in a sheltered position that is not north-facing.