Pests and diseases affecting trees

The following information may be helpful in identifying diseases and other problems which may affect trees.

Ash Dieback is a new disease to Britain which is caused by a fungus, Chalara fraxinea.  Find out more about Ash Dieback including the implications of Ash Dieback on Planning issues.

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Phytophthora ramorum and Phytophthora kernoviae are two new diseases which have been discovered in Cornwall affecting trees and shrubs.  Find out more about these new diseases.

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Every year winter gales highlight the need to ensure that trees are in a sound condition. If you see fungi growing on or near the base of trees you should get it identified and the tree assessed by a tree expert.  Find out more about decay fungi on trees.

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Find out about the cause of Sycamore Leaf Spot and how to identify it.  You can also find out about Tar Spot.

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