Oak wilt moves further north, threatening more Wisconsin oak

A fungal disease called oak wilt, which can kill red oak trees in only weeks once detected, is moving further into northern Wisconsin, according to the Wisconsin DNR.

Symptoms of oak wilt generally consist of leaf discoloration, wilt, defoliation, and death.

A fungal disease called oak wilt, which can kill red oak trees in only weeks once detected, is moving further into northern Wisconsin, according to the Wisconsin DNR.

The infection has been common in southern parts of the state but is moving further north where larger stands could be at risk of being infected if the root-spreading disease is detected. Oak wilt can also be spread over land.

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