If you have a smartphone, download the app which will allow you to send a picture of affected leaves remotely to plant pathologists. Developed by the University of East Anglia, it will help map the spread of the disease. For more information, visit www.ashtag.org.

Carry water to wash clothing and clean boots, tyres and wheels of soil, mud and leaves worn in woodlands where ash trees are present.

If this last point isn’t practical, ensure you clean these items before visiting other countryside sites including parks, nurseries

Wash dogs’ paws and coats as soon as you return from a woodland walk.

Don’t collect ash leaves, firewood, sticks or cuttings to take home.