We have been caring for Wisteria and other climbing plants in the area for over 30 years, which means that we have extensive knowledge and experience in the pruning, training, and planting of wisteria.
Stephen Charles Landscapes can help your wisteria become vigorous, healthy and above all, to flower.
Wisterias are notoriously difficult to make flower and it will be 7 to 15 years before they do flower. There are two to three times of year when wisterias need pruning and attaching to their supports. But it is not as simple as choosing a month, as the ideal time to prune wisteria also depends on the climate.
It's during the summer months (July or August) that pruning should be undertaken.
This is the time that you should cut back the whippy green shoots of the current year's growth to five or six leaves after flowering in July or August. This controls the size of the wisteria, preventing it getting into guttering and windows and encourages it to form flower buds rather than green growth.
During the winter months of December, January or February (when the plant is dormant and leafless), further pruning is needed. A further cut back of the growth is required, taking it down to 2 or 3 buds on each lateral branch. This tidies it up before the growing season starts and ensures the flowers will not be obscured by leaves.
With older plants, severe pruning may be needed to remove old, worn-out growths, or branches growing over windows or protruding outwards from the face of the building.
Likewise, hard pruning may be required where maintenance needs to be carried out on the structure supporting the plant. Drastically shortening back long branches, removing sections of older stems to just above a strong young branch or growth shoot lower down, or cutting completely back to a main branch, or even to ground level may be necessary.
A careful, unhurried approach is needed if larger, thicker branches are to be removed and where a branch is twining, it may be necessary to trace back and mark it at intervals with string before removing it. The end result should be a skeleton framework of reasonably well-spaced branches.
In the spring, apply fertilizer to the base of the plant. This helps your plant keep healthy.
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Tel: +44 (0)20 3897 8422
Written by Megan Randell-Charles
Date: 5th October 2018
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