New tree disease Phytophthora lateralis found in Scotland

Phytophthora lateralis has been found for the first time in Britain on a Lawson's cypress tree at Balloch Castle Country Park on the banks of Loch Lomond.

Phytophthora lateralis found on 80 Lawson’s cypress trees in Balloch Castle Country Park, Scotland - image: Forestry Commission
Phytophthora lateralis found on 80 Lawson’s cypress trees in Balloch Castle Country Park, Scotland - image: Forestry Commission

Forestry Commission scientists identified the pathogen. They are testing samples from the other 80 Lawson’s cypress trees in the park showing similar symptoms and also investigating 27 dead and dying yew trees.

Forestry Commission Scotland director Dr Bob McIntosh said: "This is a very worrying development; P. lateralis is a particularly virulent pathogen, and very few trees survive an attack."


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