Replanting opens the questions of what with and where from (and why)? Ash trees are one of the most freely regenerating of the trees that we have. Leave any area of ground near an ash tree alone and pretty soon you’ll have thousands of small ash seedlings competing for space. The most successful will survive but the vast majority will die. Ash die-back has been said to kill 90% of trees in some areas. However, in freely regenerating areas 99% of these small ash seedlings could easily be lost and there will still be more than enough potential new trees available. This will be far more vigorous, more successful and more genetically varied than a few replacement planted trees.

We often forget the power of natural regeneration.

http://www.sussexwildlifetrust.org.uk/blog/2012/11/ash-die-back-is-now-a-fact-of-life/

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