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Tree Alert

Help us gather information about the health of the nation's trees, woodlands and forests by reporting signs of dangerous tree pests and diseases using our online Tree Alert form.

You can use Tree Alert to:

  • report a problem affecting the health of a tree or trees you have seen

  • report a sighting of a specific tree pest or disease

  • submit a request for a diagnosis of a pest or disease problem if you own or manage a woodland

Our Tree Alert app is no longer supported. Please use our online form instead.