Clematis and Climbers

When to prune Wisteria to get more flowers

Last updated on January 24th, 2022

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When to prune Wisteria and the importance of it

Wisteria is a beautiful climbing plant and there is no mistaking the masses of (usually) blue or white petulant, sweetly scented flowers that appear upon their twining stems. These usually appear from the late spring through to mid-summer. Pruning Wisteria can be daunting at first, but it doesn’t need to be. Regular pruning will reward you with more flowers and is worth the effort. Wisterias do not need to be pruned every year and can be left unattended if you have plenty of space, but pruning will control the growth and promote more flowering so it is often worth the effort.

when to prune wisteria climber
Wisteria arbour, Grove House (Mark Percy) / CC BY-SA 2.0

When to prune Wisteria?

First Prune – July-August

Wisterias are best when they are pruned twice a year. The first time should be around July-August, which is usually a couple of months after it has finished flowering. Prune the new growth back to around 5 or 6 leaves and this will encourage more flower buds.

Second Prune – January-February

In order to promote more flowers, you should prune Wisteria plants for a second time when the plant has gone dormant and had lost all of its leaves, this is usually around January-February. Cut the same growth back again to around 3 buds, this will ensure a more free-flowering plant in the spring.

Never prune later as you may be cutting off the new growth that produces the flowers and you may be disappointed with a poor display.

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