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This website supports the consultancy business based in North Wales and which operates throughout the United Kingdom providing a wide range of arboricultural services including: home buyers tree reports, tree condition reports, development site surveys and reports, woodland assessment and management plans and general advice relating to trees.

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Saturday, 23 February 2008

Ash Update

I saw an ash tree yesterday with an old branch tear wound that had begun to develop wound wood, therefore occluding or sealing the wound, that looked very similar to the ash puzzler posted previously. I am even more convinced that this is the explanation but will feedback comments from the forum when I have submitted the image.


  1. I find this interesting that a tree can grow this to cover a wound.
    I will certainly be regarding trees in a completely different light.

  2. There are different types of wound wood. At the collar of any branch are cells that develop rapidly following branch removal,
    growing wound wood to seal it over.

    If you remove a branch too close to the branch it grows from, you remove the area of tissue that develops these cells and the branch cannot seal in the same way. This results in wounds and leaves the tree open to infection by fungal spores and bacteria.

    However, bark can grow eventually at the edge of wounds and will try to seal it over. It may not always be possible and the bark at the edge of a wound must be functional.

    I do believe that this is the result of much wound wood growth and a very exposed site but it would have taken many years.

    I am guessing it was you who voted for Tree Biology in the poll. Excellent choice!

  3. I hope you have a nice day! Very good article, well written and very thought out. I am looking forward to reading more of your posts in the future.


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