General tree health

Observatree Sampling Guide

An introduction to Observatree’s priority pests and diseases (training video)

DEFRA’s tree health page

The Government’s 2014 Tree Health Management Plan

Tree Health and Plant Biosecurity Progress Report Research 2013

Guide to trees and their pests and diseases

Tree identification

Policy

Biosecurity policy

Sustaining and enhancing trees, forests and woodland

Plant health controls

Plant passport

Plant import

Plant export