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Apr 03, To protect oak trees and help prevent oak wilt, the Wisconsin Department of Natural Resources advises people to avoid pruning oaks on their property from April through July. Spring and early summer pruning makes oak trees vulnerable to oak wilt, a fatal fungal disease that rapidly kills trees in the red oak group and weakens those in the white oak group.
Aug 13, Late fall/winter pruning is especially important for oak trees to help prevent spread of the fungus that causes oak wilt (see University of Wisconsin Garden Facts XHT). Late spring and summer are usually not good times of year to prune because disease pathogens are present and wound closure is slower. Mar 30, April 20, by margueriterapp. By Don Kissinger, urban forester,[email protected] or Paul Cigan, plant pest and disease specialist,[email protected] Anyone with oak trees in their yards or on forested lands should avoid pruning or cutting them from April through July to protect them from oak wilt.
Dec 14, The best period to prune oaks is between the months of October and March. In spring, stop pruning when daytime temperatures reach 50 degrees. This is because oak wilt - a fatal disease of oaks - is spread by beetles that feed on the sap of tree wounds. But these beetles are not active in Estimated Reading Time: 3 mins. Feb 02, Choose one of the responses below: April 1 to July 15 (spring-mid summer, SPS) - south of tension zone.
April 15 to July 15 (spring-mid summer, SPS) - north of tension zone. July 16 to Sept. 30 (mid summer - early fall, SEF) statewide. Oct. 1 to March 31 (fall-winter, FWN) if south of tension stumppruning.clubg: Wahiawa HI.