Go to navigation
Trees - pests and diseases
The definition of a pest varies according to the environment and
the nature of the classification. For example, the definition of a
pest from a management perspective would be any species having an
adverse effect on its inhabited environment, whereas from the
natural environment perspective, pests will include exotic
The broadest definition of plant disease includes anything that
damages plant health. This definition can include factors such as
air pollution, insufficient nitrogen and pathogens.
The links at the top of this page and the Forestry
Commission website provide information on pests and diseases
found on trees and imported timber.
a diseased tree