Pruning varies according to which group the clematis belongs to. Pruning
groups for each clematis we sell are listed with in the online catalog.
Group 1 - Early flowering cultivars. These cultivars flower in the
spring, only on growth produced the previous season. They generally do not need to be
pruned at all but can be trimmed up to keep the vine within its bounds.
Group 2 - Early to midseason flowering cultivars and rebloomers. These
plants begin to flower in early summer with the first flush of flowers appearing on the
previous years growth (old growth) followed by a second flush appearing on new growth.
Prune this group in late winter or very early spring. Remove all dead and weak
stems. When trimming back the healthy stems locate well developed buds and make your cut 6
- 9 inches above the buds.
Group 3 - Late flowering cultivars. This variety blooms first on new
growth beginning in midsummer followed by a second flowering period on new shoots in early
fall. The growth habit of this group makes them difficult to prune though it can be done
in late winter or early spring. All shoots can be cut back or hard pruned to the previous
years wood, just above the base of the plant to control size. When this type of pruning is
done the clematis will skip the midsummer flowering period but will bloom in the fall.
If you need to control the size of clematis vines in this group it is better to do
so with selective pruning carried out over a three year period. Each year cut back
one third of the stems - 6 - 9 inches above well formed buds.
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