Wildwood Visitors may encounter trail detours through March as crews remove oak trees that died from oak wilt.

Oak wilt, caused by an invasive fungus, is fatal to oaks, which are the predominant tree species at Oak Openings and Wildwood. Areas infected with the disease are identified by their discolored canopies during aerial surveys in the summer.

Since 2016, Metroparks has been battling the disease by trenching around affected trees to prevent the spread through the root system.

Photo: 2014 aerial view of dead oak trees at Wildwood