Pests and Diseases


Do I need to know this?

The best way to protect our trees and plants from pest and disease outbreaks is with ongoing monitoring of health. As with our own health, trees and plants are more susceptible threats from pests and diseases if they are under stress from other factors such as extremes of heat, drought or poor management practices.

It is helpful to be familiar with the pests and diseases that may affect specific hosts you are looking after, so you are able to detect signs and symptoms as early as possible and take appropriate action.

Diagnosis

With time, knowledge and experience, you may be able identify a number of different pests and disease yourself. However, there’s no shame in not knowing what something is! There are a number of plant clinics around the country with specialist diagnosticians for mycology, bacteriology, virology, entomology and nematology who’s job it is to test and diagnose pathogens and its not always straight forward. If in doubt please do get in the professionals.

Notifiable P&D

Some pests and diseases are notifiable, which means that, in England, they must be reported to the Forestry Commission or the Animal and Plant Health Agency (APHA).

Notifiable pests and diseases are the ones that have the potential to cause the greatest damage to our trees, woods and forests. If an outbreak of a notifiable pest or disease is confirmed, action will be taken to try and eradicate it.


Tree P&D Matrix - Forestry Commission

Table of notifiable tree P&D and quick guide to how each pest and disease is spread.

Notifiable pests - Defra

Defra factsheets on key notifiable pests.

Guide to leaf damage - IPSN

Useful guide to classification of damage by leaf-feeding (phyllophagous) arthropods.

Plant health checker - IPSN

Tool to document plant health observations.

Identifying a Tree Pest or Disease - Forestry Commission

List of pests and diseases by host.

Notifiable diseases - Defra

Defra factsheets on key notifiable diseases.

Taking photographs for diagnostic purposes - BCGI

Useful presentation on what is needed in the lab.

Disposing of trees and plant affected by disease or pests - Environment Agency

Guidance on disposing of plants effected by disease or pests.

Pest and disease profiles - Forest Research

Alphabetical list of tree pests and diseases with links to fact files about each.

Field identification guides - Observatree

Handy booklets full of facts and images.

UK Plant Health Risk Register - Defra

Searchable database of plant pests and diseases and their associated risk ratings - mitigated and unmitigated.

Pest and disease alerts - Defra

Alerts on key notifiable pests and diseases.

Guide to bleeding trees - IPSN

Useful guide by Charles Lane, Fera.

Contingency planning - Defra

Generic and specific response plans for outbreaks of plant pests.