cutting back large Leylandii - how far back

Discussion in 'Other Plants' started by ETAF, Jan 12, 2022.

  1. ETAF

    ETAF Apprentice Gardener

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    I have a large hedge Leylandii along the back of the house
    Around 8' high maybe 60-100ft along the back fence
    Its has over the years grown out into the garden a lot - used to be mother-in-laws property and she had it cut back every couple of years
    We have now purchased the property a few years back, and have cut the Leylandii back a few times, and paid to have it cut back.

    I'm now planning on getting a Stihl long reach hedge trimmer to keep it under control as I can not afford the £600 ish quotes , and would probably cut twice a year along with lots of other hedges
    I'll post a question about the hedge trimmer in a separate thread

    My Question re the Leylandii
    How far back can it be cut - must it still have green showing , i have been told to far back and it will die
     

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  2. shiney

    shiney President, Grumpy Old Men's Club Staff Member

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    You definitely don't want to cut back into any brown leaf areas as it will not regrow. The trees won't die but will only grow upwards and you will have permanently brown and bare sides. Cut back gradually until there is still some green leaf there. Then cut regularly - two or three times a year depending on how quickly they grow. You mustn't cut it during nesting season and it's always better to have a quick look through for nests before doing so. Some of our bird people will be able to tell you nesting times. May ask on the bird thread.

    The top you can cut down as much as you wish. With the height they are now you can cut down a few feet if you wish. Don't cut down just to the height you want it but cut to about 12" below and let fresh growth grow up to the height you wish. Then that upper area will be fresh growth and easy to cut.
     
  3. ETAF

    ETAF Apprentice Gardener

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    Thanks for that info, I will have a look at the top - I think the main trunk has been cut down and very thick, so not sure i can go much lower, its also about the same height as a fence we have which divides us from a park.
    Interesting you're suggestion to cut back 3 times a year, even more reason for the Hedge trimmer - separate subject. Strap / Harness for Long reach Stihl battery hedge trimmer
    any suggestions on times of year
    We check for nesting, before any work.
     
  4. shiney

    shiney President, Grumpy Old Men's Club Staff Member

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    If you wish you can cut the thick trunk back further and it won't harm the tree.
     
  5. ETAF

    ETAF Apprentice Gardener

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    Thanks,
    That would require a chainsaw , which i do have , and there are about 6 trees to do along the length

    What would be the advantage of fresh growth on the top ?
     
  6. shiney

    shiney President, Grumpy Old Men's Club Staff Member

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    Thinner new branches and easier to hedge trim :thumbsup:
     
  7. ETAF

    ETAF Apprentice Gardener

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    excellent thanks , may look at that as a bigger project
    But may help keep the top trim
    Thanks again for all the advice
     
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