MADISON, Wisconsin — Wisconsin Department of Natural Resources officials are urging people to prune their trees during the winter to help reduce the spread of diseases.
DNR foresters say pruning branches when trees are dormant reduces stress on them. It also reduces the chances of insects attacking open wounds on trees and spreading oak wilt and other tree diseases that aren't active during the winter months. The lack of leaves also makes it easier to see and prune broken, cracked or hanging branches.
Oak wilt is common throughout the southern two-thirds of Wisconsin but it still relatively rare in the northern reaches of the state.
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