In Denmark, Ash is the third most common tree, and 90% of them are now dying. The disease is fungal, a pathogen known as “Ash die-back”, and it is now spreading across Europe. A comparable situation in our part of the southern Appalachians would be if all the hickories were dying. While this pathogen has become so virulent just now I don’t think is known, but certainly the ease with which plants are transported across vast distances by man in days that could not …

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