TIPS ON CLEMATIS PRUNING
Clematis are classified into pruning groups based on their flowering times. As a guide, remember: if it flowers before June, do not prune; if it flowers from June onwards, prune in February.
GROUP 1 Early flowering clematis (eg Montana) that bloom on the previous year’s growth need no pruning but may be trimmed after flowering. If they become too wild, cut back stems to one metre from the ground, then mulch, feed and water.
GROUP 2 Bloom in early summer on stems produced in the previous year (eg large-flowered hybrids). Lightly prune in winter; after flowering, deadhead and feed to encourage a second flush.
GROUP 3 Bloom in mid-to-late summer on the current year’s growth (eg viticella). Prune hard in February to the lowest pair of buds.