“Regular pruning of clematis encourages strong growth and flowering and keeps the growth in check,” it said.
“If left unpruned, clematis can turn into a mass of tangled stems with bare base and flowers well above eye level.
“The main pruning season is late winter to early spring, but some can also be pruned in early summer after their first flush of flowers.
“If you are unsure or forget which group your clematis fall into, observe the flowering time on your plant and use the following simple guide; Flowering before early summer (June), do not prune. Flowering from late June onwards, prune in late winter (February).”