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Wisteria Worries

Hello,

I am an extremely new gardener and need some help.  We have an old wisteria tree in our back garden inherited from the previous owners.  However, we add to replace and heighten a brick wall the wisteria once perched on.  

We went to great lengths to insist the tree stayed.  However, it is currently now facing out, away from the wall and flopping all over the place.  It needs cut back for practical reasons because if we did force it onto the new wall, it would hang into a lane that is need for bin lorry access.

My research tells me to prune it in January.  However, pruning back to reasonably recent growth isn't going to help much. 

What are my options? Do I cut it right back to the thick trunks? Will it ever grow back? Or, is it a goner? 

I've attached some photographs that will hopefully help. 

Thank you in advance for any help.


Posts

  • fidgetbonesfidgetbones Posts: 17,618
    You can cut back everything that is less than an inch thick.  That should help.
  • ObelixxObelixx Posts: 30,090
    edited January 2021
    Cut back any and all stems pointing in the wrong direction away from the wall.  Do this as soon as possible before the sap starts rising or it will bleed sap and become weak.   Make sure you do it on a day when no frost is forecast so the wounds can heal well and make sure your loppers, pruning saw and secateurs are clean and sharp to reduce the chance of infection.

    Once you've done that identify which stems you want to grow on, develop and train along your wall and remove all the rest.  I would then give it a generous handful or 3 of pelleted chicken manure to encourage it and, when buds start to break, a feed of slow release rose or tomato feed to encourage flower bud formation.

    You may not get any flowers this year but you should get new growth.   In future, it will need pruning in July and January to encourage the formation of flower buds.  more info here - https://www.rhs.org.uk/advice/profile?pid=242  

    You may also want to think about attaching some vine eyes to that wall (screws with loops on the end instead of a flat or posidrive head) and then stretching some tensioned wires between them at 30cm to 45cm/12" to 18" horizontal intervals so you can train new stems along the wires just until they thicken up and become woody and self supporting.
    Vendée - 20kms from Atlantic coast.
    "The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
    Plato
  • Thank you for your help.

    All of it is facing away from the wall and the parts closest to the wall are over an inch thick.

    I’m in Scotland so still below zero most nights, I’ll have another look this weekend and try and develop a strategy, maybe even develop a rig to gradually bend the branches towards the wall?
  • ObelixxObelixx Posts: 30,090
    You could certainly train new shoots to grow along the wall so just cut off obvious ones that will be in the way.  If you can get a decent set of racheted bypass loppers they'll deal with branches up to 1?5" thick.   I have a lovely new, own brand, pair bought at a local garden and smallholders' supply shop.  Go see what your local DIY and garden stores have.   
    Vendée - 20kms from Atlantic coast.
    "The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
    Plato
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