THE Peak District National Park Authority is trying to find people who have planted ash trees in the last six years.
It is also urging people to choose alternatives to ash for future tree-planting schemes.
The appeal is part of a national alert over ash dieback disease, caused by the fungus chalara fraxinea.
Jane Chapman, head of environment and economy for the Peak District National Park Authority, said: “The Peak District National Park is open for business and people should continue to enjoy the area as normal.
“This is a serious disease and if it took hold in our woodlands it would change some of our most iconic landscapes irreversibly.
“No cases have been found in the Peak District, but if we are going to get an outbreak, new trees are the most likely source of infection.”