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Issues with a Leylandii Conifer

I'm an amateur gardener and inherited a Conifer from my home's previous owner, in what I think may be a Castlewellan Gold, sitting in the front garden in Harrogate.

These trees have steadily become patchier and browner over the past five years, and areas that are brown suddenly begin sprouting new life again.
The previous owner had pruned this conifer fairly aggressively (in fact took the top off completely to create a square edge which exposed the trunk and branches).

I've since allowed the green to sculpt around the trees as much as possible, and have periodically put bonemeal down, but I was wondering if any forum members could suggest a strategy to encourage a yellow/greener healthier looking set of trees.

I've enclosed some images to show the extent of the browning, and I'm aware it could be a pest, but as I drive aorund Harrogate many other home owners with a similar variety also seem to have issues with it.

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Posts

  • LynLyn Posts: 23,190

    I will third thatimage

    Gardening on the wild, windy west side of Dartmoor. 

  • Hostafan1Hostafan1 Posts: 34,888

    ditto  Darren.
    Methinks  " flogging a dead horse"

    Devon.
  • it looks like its in a good state for a bonfire

  • ObelixxObelixx Posts: 30,080

    These things won't recover as they don't grow new shoots from brown wood which is why they always have to be pruned or trimmed leaving some green foliage.

    Get rid and plant something lighter and brighter - after lathering on generous amounts of well-rotted manure and garden compost to help replenish soil nutrients and condition.

    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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