Clematis 'Blue Ravine' is an early-flowered clematis, producing large mauve-blue flowers with dark central stamens in late spring and early summer, with a second flush of flowers in early autumn. Pruning lightly after the first flowering is over will encourage this second flush. 'Blue Ravine' can reach a height of 3m, but can still be grown in a large container. It also looks lovely trained over an arch, or allowed to scramble through shrubs. Flowers May-August. Supplied in a 3-4 litre pot.