Try not to prune oak trees during the spring-summer season.

Apr 30, Smart gardeners should not prune oak trees past April 1 to ensure their trees don’t succumb to oak wilt disease. Avoid pruning until November.

Oak trees comprise a significant portion of Michigan forests and are grand, valuable members of our urban landscapes, providing shade and wildlife habitat and bushmulching.barted Reading Time: 4 mins. Apr 20, The Michigan Department of Natural Resources encourages residents to avoid cutting or trimming of oak trees between April 15 and July 15 to curb the spread of Author: Julie Norwood. Aug 09, The general rule of thumb for pruning oak in Michigan is as follows:"The highest risk of infection occurs April July 15, but it is prudent to avoid pruning or injuring oak trees until they have lost leaves for the winter, typically from November through mid-March.

August-October is considered less risky for pruning, but most homeowners wait until dormancy to trim oak trees. Read more about Oak Wilt in this article from the Michigan State University Extension. Try not to prune oak trees during the spring-summer bushmulching.barted Reading Time: 8 mins.