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Pruning Wisteria

I've been growing this wisteria on the side of my shed for over 5 years but its never flowered.  I've never pruned it as i was scared i would kill it but this year i've watched some videos on youtube on pruning so the beginning of July i pruned all the whippy growth 5 leaves. After just 2 months there is loads more  whippy growth, do i need to prune it again or leave it till spring. What do you guys think?


  • ObelixxObelixx Vendée, Western FrancePosts: 28,049
    edited September 2020
    The general rule is to cut those whippy stems back to 7 nodes in July and than agian to 2 in February but our wisterias haven't read the manual.

    I have two, a bit bigger and older than yours.  The larger of the two produces whippy bits from June to September and some wave about and ambush me as I walk past so I prune all the whippy bits as they appear, not just in July.

    I prune the other in July too but after that it tends to send whippy bits upwards, out of reach, so for those I wait till leaf fall when I can see what's what and get up a ladder to stop them diving under gutters and roof tiles.  It also gets cut back frequently where it grows around a doorway that is our main entrance with shopping and dogs.

    In February/March I check both to make sure they have no broken or dead bits and cut back any stem I can see is going to head in the wrong direction.   I don't do the cutting back to two buds cos there are just too many to do all that counting now.

    Mine flower abundantly in late April/early May and then have a second flush in late June/July and this year there's a wee burst of flowers again now so they seem happy. 

    "We don't stop playing because we grow old; we grow old because we stop playing." - George Bernard Shaw
  • Lizzie27Lizzie27 SomersetPosts: 9,637
    I do the same as Obelixx and just cut the whippy bits off whenever I see them get out of hand. In Jan/Feb, I prune more to shape as you can see better when the leaves have fallen.  
  • VoyagerxpVoyagerxp Posts: 622
    Hi back again and still no flowers, I  pruned the wisteria in August last year & then again in  February as shown on the RHS. I brought this plant over 10 years ago as a very small plant from Morrison's supermarket. Are there wisteria that don't flower. Ive seen Wisteria flowering at garden centers that are very young plants.

  • Wisteria like a lot of sun. So if that side of your shed doesn't get a lot of rays that could be the reason. On a north facing wall it will be unlikely to flower much if at all.
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