Oak wilt

Asked June 19, 2020, 8:13 PM EDT

A large beautiful oak behind our home has succumbed to oak wilt. We have several more oaks behind our home. Is there anything that can be done to save them? They are large oaks in a wooded area, so they are not pruned. We have both red and white oaks back there.

Oakland County Michigan

1 Response


This reply to another client with your situation from one of our Oak Wilt Specialists, Ruth Marcy, explains what you can do-

“ For up to date information on oak wilt management, you can read this tip-sheet written in 2019, https://www.canr.msu.edu/news/smart-gardening-to-prevent-oak-wilt and you can go to the website of the Michigan Oak Wilt Coalition https://www.michiganoakwilt.org/
where there is a list of oak-wilt qualified arborists.

There have been no new guidelines issued in the past few years. It is still important to verify the disease by a lab analysis, or by finding a mycelial mat on an oak that has been dead for at least 6 months.

The only way to confine the disease is by severing shared roots by trenching. Surrounding healthy trees can be protected by injections of propiconizole.

And it is very important to either burn, bury or shred the wood from infected oaks on site- do not transport the wood unless it has been tightly tarped for at least a year until fully dry. “

If you need more help or information, please don’t hesitate to ask us here. I hope this helps you.