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Please help with my leylandii hedge

Hi

we moved into our current house a year ago, along the side of the garden are around 50 leylandii at roughly 12 feet.

around 15 of these appear to be dead and privacy is now an issue, and the some of the ones which don’t appear dead have substantial gaps at the bottom.

I would rather keep the hedge, because if I replace with a fence I will then be overlooked by the houses over the road which I want to avoid, but at the same time I don’t want to remove the dead trees and have to wait several years before the new ones are big enough.

In one corner there’s around 10 which are completely dead, these are in close proximity to an apple tree which I am about to remove, my plan here is too cut away at the dead leylandii and plant 6 footers next to them, which will keep some form of privacy whilst the new ones grow,will this be ok or will I need to completely remove the dead ones?

The other issue I have is the gaps at the bottom, as it is currently we have a 3/4 foot wall on the other side of the hedge, our dog gets through the gaps and could escape so ideally I want to fill these gaps, would I simply be able to plant say,2 foot leylandiis in the gaps

Sorry if these are daft questions, as you can tell I am not a Gardener!

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Posts

  • JennyJJennyJ Posts: 10,576
    edited April 2021
    I think you'll have trouble establishing anything in the root zone of leylandii (even other leylandii). Also, it takes some doing to kill leylandii (unless they've been cut back to brown wood all over) so you might want to try and work out why they died before planting anything else that might go the same way.
    PS welcome to the forum, and I hope someone else has a good suggestion for you. Personally I would get rid of the lot of them and plant something nicer, but that doesn't help you with privacy or dog restraint.
    Doncaster, South Yorkshire. Soil type: sandy, well-drained
  • K67K67 Posts: 2,506
    Whether you would be able to replant unless you removed all the stumps and replenished the soil is debatable.
    Can't you put some wire netting at the bottom to keep the dog in?


  • benarnold111benarnold111 Posts: 7
    edited April 2021
    JennyJ said:
    I think you'll have trouble establishing anything in the root zone of leylandii (even other leylandii). Also, it takes some doing to kill leylandii (unless they've been cut back to brown wood all over) so you might want to try and work out why they died before planting anything else that might go the same way.
    PS welcome to the forum, and I hope someone else has a good suggestion for you. Personally I would get rid of the lot of them and plant something nicer, but that doesn't help you with privacy or dog restraint.

    The hedge was in the current state when we bought the house, so I’m unsure if the issue was down to cutting.

    as I said, in the worst hit corner is a big Apple tree around 3 foot away, I assumed this tree starved the leylandii of water.

    I will be removing the apple tree  for a number of reasons, but hopefully this would help new leylandii grow!

    and thank you 
  • K67 said:
    Whether you would be able to replant unless you removed all the stumps and replenished the soil is debatable.
    Can't you put some wire netting at the bottom to keep the dog in?


    Yes I was thinking of some wire netting, although this wouldn’t help with privacy as such


  • One of the dead ones on the other side has a lot of this around it, I’m unsure of what it is, and whether or not it had something to do with the death?
  • K67K67 Posts: 2,506
    More likely your leylandi starved the Apple tree.
    Why a privacy issue so low down and with a wall behind it?
    Do people walk past your garden on their knees?
    You could try growing ivy up the netting but it will need a lot of watering to get it established but bit might also grow into the dead trees but will takes a few years. 
  • K67 said:
    More likely your leylandi starved the Apple tree.
    Why a privacy issue so low down and with a wall behind it?
    Do people walk past your garden on their knees?
    You could try growing ivy up the netting but it will need a lot of watering to get it established but bit might also grow into the dead trees but will takes a few years. 

    The apple tree seems to be healthy enough and the leylandii dead so I just assumed that was the case

    the photo I used as an example was more the dog issue, in places the gaps are quite a bit higher and it does pose a  privacy issue, I was originally  thinking of raising the wall, or having a small fence built however the hedge protrudes the wall which throws both them ideas out 

    the ivy and netting is a good idea
  • K67K67 Posts: 2,506
    edited April 2021
    You have inherited a lot of closely planted trees and we have had really dry summers and springs.
    Conifers never look short of water until they turn brown maybe a year or so later  and then it's too late.
    They might have been cut back into old wood and then the tree will never regrow.
    It's the wrong time of year for planting a tree you wont be able to water enough.
    Leave it till the autumn and then you can evaluate your privacy issue, it might not be as bad as you think or you can perhaps build a pergola or erect a sail or put up large parasol 
  • JennyJJennyJ Posts: 10,576


    One of the dead ones on the other side has a lot of this around it, I’m unsure of what it is, and whether or not it had something to do with the death?

    It's hard to tell for sure but that looks like winter jasmine. I don't think it would have out-competed leylandii but it could have spread into them after they died or were already weak.
    Doncaster, South Yorkshire. Soil type: sandy, well-drained
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