Oak Wilt Disease

Caused by a fungus (Ceratocystis fagacearum), oak wilt was first discovered in Wisconsin in the 1940’s and has since caused significant oak death in the Midwest, including South Eastern Minnesota.

No Cure

This pathogen affects all oak species and, at present, there is no known cure. However, by simply pruning oaks at the proper times (Only in the fall and winter - Never in the spring and summer) the spread of this deadly fungus can be curbed.

White Oak Tree