How to Prune clematis 'John Warren'?
Clematis pruning: group two

clematis 'John Warren' · Clematis 'John Warren'
Plant in a moisture-retentive, well-drained soil; the flower colour is strongest in sun; keep the base of the plant and the roots cool and shaded by other plants or a layer of pebbles or flat stones at the base See clematis cultivation for more advice
Clematis pruning: group two