For foresters like Anders Grube, the disease is a management nightmare. Many of his ash trees have already been cut down – the timber worth a fraction of the price he was getting before the fungus arrived.

“It is a disaster. I am losing lots of trees and lots of money. In this forest I have lost about a million pounds,” he says.

“Before this disease we were getting double the money for ash we are getting now. I am lucky I can sell to China, but I am only getting half the price.”

Ash dieback also causes big problems for those who rely on a steady supply of ash wood.