dying hemlocks

Photo by Will Blozan, Dying hemlock trees in the Appalachian Mountains. 

Last year, Hemlock Woolly Adelgid (HWA) was first established in the Upper Midwest, and unfortunately right here in Ottawa County. This invasive pest has devastated forests along the East Coast of the United States. Within Michigan, there are an estimated 170 million hemlock trees that are at risk of dying from HWA. However, the loss of hemlock within our forests is just the beginning.

Long-term studies from the east coast have documented extensive negative effects caused by the loss of hemlock within natural communities. These changes affect the ecology and economy of the infested areas.

There is good news. This pest is treatable, and it is not yet widespread.

We believe we can stop the spread of this forest pest before it is too late. Unlike the emerald ash borer, which recently devastated Michigan, this is pest slow moving, treatable, and concentrated in West Michigan. We need you to IDENTIFY, REPORT, and TAKE ACTION.


 More information about the ecological damage HWA can do.

 More information about the economic damage HWA can do.



Latest News

Task Force Update

Meet the new West Michigan HWA Project Coordinator! Daria Gosztyla joins Ottawa Conservation District as the new Hemlock Woolly Adelgid (HWA) Project Coordinator working under the recently obtained HWA GLRI …

Task Force Update

HWA Task Force Update Surveys have shown that HWA is more widespread than originally known, but most infestations are related to their original introduction points. The DNR was able to …