Protecting trees from pests and diseases

A Horse chestnut leaf with considerable damage made to the leaf by a leaf miner causing the leaf to turn brown with spots.

Simple actions to keep our forests healthy

The nation's forests are special places full of wildlife, adventure and treasured moments spent together. But tree pests and diseases are spreading faster than ever, and they can cause real harm to the forests we all enjoy.

The good news is that small, simple actions from all of us can help slow the spread and keep our forests and woodlands thriving for generations to come.

Pests and diseases travel travel easily

Tree pests and diseases can hide in mud, water and leaf litter. They can hitch a ride on boots, wheels, paws and vehicles as people move between places, allowing them to reach new areas where they can damage or weaken more trees. 

While they can spread naturally through wind and waterways, human movement often helps them travel further and faster.

Three simple ways you can help

1. Park smart

Parking on tarmac or gravel, rather than grass or mud, helps keep contaminated soil from spreading.

2. Leave plants abroad

Imported plant material is one of the biggest ways that new pests and diseases are introduced. Please do not bring back seeds, plants or saplings from trips overseas.

3. Keep it clean

Brush or wash mud off your boots, bikes, paws and other personal items between visits to green spaces such as forests, woodlands, gardens and parks. This helps stop pests and diseases travelling between places.

What to learn more?

Visit our blog about protecting tree health in England to learn more about what tree pests and diseases are, how they spread and why prevention matters.

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