Biggest, tallest, fastest growing evergreen trees

Discussion in 'Trees' started by martin123321, Aug 11, 2020.

  1. martin123321

    martin123321 Apprentice Gardener

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    Hi

    I am a total non gardener and my house backs onto a train line. Unfortunately in all the houses along the road we have the biggest gaps in what is currently there.

    Therefore I would like to know what are the tallest, fastest growing evergreens I can get please. Its 20 metres from the house so hopefully roots not a problem

    Also are there any tips or tricks to stop the newly planted trees from being overcome by the ivy thats currently killing whats already there

    Thanks
     
  2. NigelJ

    NigelJ Total Gardener

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    @martin123321
    Probably Leyland Cypress: unfortunately. You will probably need to improve the soil and they will need regular watering until established, consider some form of drip irrigation or a leaky hose type system, to save carting lots of water around.
    Yes remove as much Ivy as possible before planting and keep it under control.
    Ivy is unlikely to be killing healthy trees, but if the trees are already ailing it doesn't help them.
     
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    • martin123321

      martin123321 Apprentice Gardener

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      Thanks

      When you say improve the soil. What's best? Mix in a bag of manure?

      Also whats the best time of year to plant or when to avoid?

      Cheers
       
    • JR

      JR Chilled Gardener

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      Whilst most Gardeners wouldn't want leylandi, they sound a good choice for a railway screen. They are fast once the roots get established.
      As said.. Give plenty of water to the newly planted trees.
      They will also suppress a good amount of train noise.
      Bear in mind, that unchecked they can grow 40 odd feet high and also very large in diameter.
      So you either need acres of space, or be prepared to trim them as a tall hedge.
       
    • martin123321

      martin123321 Apprentice Gardener

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      Thanks

      When you say improve the soil. What's best? Mix in a bag of manure?

      Also whats the best time of year to plant or when to avoid?

      Cheers
       
    • NigelJ

      NigelJ Total Gardener

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      I would hold off planting until spring and prepare the site over the autumn/winter period. Dig the manure in and clear away as much of the ivy as possible. If you want to use irrigation for the young trees install that.
      How big is your bag of manure and how many trees are you thinking of?
      As Jymi said they can get big, there is a superb example at Kew. They can reach 100ft plus.
      When you do trim them remember that they do not regrow from old wood, so if you cut too far back they will remain bare and brown.
       
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