Pruning Wisteria sinensis - How and when to prune Wisterias
Pruning Wisteria is not essential where they have room to roam
and colonise a wall frame or sturdy trellis. Wisteria will
wander and flower in this situation without any pruning.
However, if the Wisteria is growing in a confined space, or at
least needs to be constrained, then pruning will be necessary as
set out below.
If you want the best flowers on your Wisteria, then it is important to
prune your Wisteria, and prune your wisteria at the right time. We show
you when to prune wisterias, and also how to prune wisterias.
Wisteria is a strong growing vine, and will soon become a tangled mess
if left to its own growing habits. As we tend to grow wisterias as
ornamental plants – climbers – then protocol decrees that they should be
kept under control!
To keep Wisteria under control they should be pruned twice each year.
Prune like this to ensure maximum flower and the pruning will also keep
your Wisteria within set limits!
When to Prune Wisterias
Autumn Pruning of Wisterias
Autumn or early winter pruning of wisterias simple brings the rapid
summer growth into some manner of tidiness, and will most certainly
allow for easier pruning in the early spring. Whilst pruning wisterias
in the manner set out below is best, the second best option is for
trimming wisterias with a good hedge clipper. That will at least allow
for easier access in later winter.
Prune wisteria in the autumn by pruning all of the current side-shoot
growths back to within 30-40cms of the main lateral branches. This
should leave 4-6 leaves or leaf buds on each side-shoot. Any side shoot
required to extend or train the framework should be left and trained as
required and not be pruned!
Winter – Early Spring - Pruning of Wisteria
In January-February, cut back Wisteria side shoots back even further
- 6-10cm long, leaving only 2 or 3 buds on the side-shoot. These will be
the flowering spurs on your wisteria. There is no need to prune the
wisteria to an outward facing bud.
These pruning operations should be carried out each year. The only
shoots to be left 'unscathed' are those which are required to extend the
size or direction of your wisteria.
Any lateral training of the new lateral framework needs to be done at
this time unless it was completed with the autumn trimming session
A wisteria side shoot - lateral, ready to be
cut back hard in late winter pruning (Jan/Feb).
The lateral -
having been cut back to 3 buds from the main
branch leader. The pruning cut is immediately
above a bud.
This will allow the flower buds -
which are on the older wood nearer the main stem - to receive the food
reserves which are surging up through the vine at this time. If these
shoots are left un-pruned, as well as developing into an untidy mess,
the 'goodness' will be allowed to creep up through the shoot and give
even more growth, both hiding the flowers, and depriving the flower buds
of the wisteria the food reserves.
A great specimen of
wisteria, that has been pruned correctly. learn about
Regular Pruning of this
wisteria is essential, for whilst it has the space to
roam unhindered, the pathway below would soon be
rendered unusable as the wisteria would soon take over
the whole arch.
How to Prune Wisterias. A
tidying-up operation in autumn, followed by hard pruning your wisteria
in the late winter
When to Prune Wisteria – October is the optimum time
for the autumn pruning of wisteria. Most of the foliage will have
dropped. February is the good time for winter pruning – but no later
than early March.
Back to A-Z of Pruning Shrubs :
Varieties and types of
wisteria | Wisteria
Care and Growing.
By David Hughes -