The City of Windsor's forestry department is keeping a close eye on the area's oak trees after an invasive fungus was discovered in other parts of Ontario.
The Nature Conservancy of Canada warns Oak wilt has been discovered in Niagara Falls and Simcoe County.
"Windsor, being one of the cities that is closest to the U.S., which basically marks Windsor as a potential entry point we are part of a group that meets, recently about every two weeks to discuss how oak wilt issues are emerging in Canada," said Yemi Adeyeye, city forester.
Adeyeye said the disease has not been officially discovered in the city but they are actively watching some trees.
"We've not confirmed any case in Windsor yet. We have some situations that we are watching actively, we are trying to make sure that we get ahead of it," said Adeyeye
According to the Nature Conservancy of Canada Oak wilt has been reported throughout the northwestern United States, along the Great Lakes region and southwest as far as Texas.
Residents are encouraged to look for signs of Oak wilt including cracks in the tree trunk along with green leaves that start wilting and turning brown at the outer edges. Anyone who thinks their tree may be infected is encouraged to call 311.
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To prevent the fungus from infecting local trees residents are encouraged to avoid trimming their trees between April and October. They should also avoid bringing firewood from other regions into the community.
Once a tree is infected it can die within two to six weeks. Red oak trees are most susceptible to the disease. While the fungus can kill a single tree quickly, the fungus is not known to spread quickly.
"It doesn't cascade that quickly," said Adeyeye. "If you identify an infection somewhere and it's quickly quarantined and dealt with you can still stop a lot of things from happening."
Oaks account for around 10 per cent of the city's tree cover.