Oak trimming timing for oak wilt - Ask Extension
When can we safely trim our oaks to prevent oak wilt?
Knowledgebase
Oak trimming timing for oak wilt #851379
Asked September 27, 2023, 10:21 AM EDT
When can we safely trim our oaks to prevent oak wilt?
Berrien County Michigan
Expert Response
Hello
If is best to wait until early November when risk of oak wilt transmission by insects is lowest.
”Homeowners can reduce the risk of oak wilt infections by not pruning or otherwise injuring oaks after April 1. While high risk of infection decreases to low risk after mid-July, it’s prudent to simply avoid pruning oak trees from just prior to bud break to leaf drop. This means April to October.”
Complete bulletin is here- https://www.canr.msu.edu/news/avoid_oak_wilt_by_not_pruning_oak_trees_april_october
If is best to wait until early November when risk of oak wilt transmission by insects is lowest.
”Homeowners can reduce the risk of oak wilt infections by not pruning or otherwise injuring oaks after April 1. While high risk of infection decreases to low risk after mid-July, it’s prudent to simply avoid pruning oak trees from just prior to bud break to leaf drop. This means April to October.”
Complete bulletin is here- https://www.canr.msu.edu/news/avoid_oak_wilt_by_not_pruning_oak_trees_april_october
