Resources on hemlock woolly adelgid
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EmailTwo videos and three bulletins provide commercial industry and homeowners with new resources on hemlock woolly adelgid.
Hemlock trees are a key tree species in Michigan’s forests. Hemlock woolly adelgid (Adelges tsugae Annad) is a potential major pest of eastern hemlock (Tsuja canadensis). It decimated stands of native hemlock in the eastern United States, particularly in the Smokey Mountains National Park. As of 2017, it has been found in four western lakeshore counties: Allegan, Ottawa, Muskegon and Oceana counties.
The Michigan Department of Agriculture and Rural Development (MDARD) is monitoring the active sites and as of July 5, 2017, has established an interior quarantine that regulates the movement of hemlock plants within and out of the four affected counties. The regulation applies to any hemlock with needles, which includes nursery stock, un-composted yard waste and other hemlock tree parts. As of February 2017, Michigan State University (MSU) was awarded a $1 million grant to help battle hemlock woolly adelgid and other invasive species.
MSU Extension and MDARD have collaborated to create resources for commercial growers and homeowners. Two new videos were released in 2017 on hemlock woolly adelgid.
- Hemlock Woolly Adelgid explains the insect and its threat to Michigan.
- Hemlock Woolly Adelgid Nursery Program explains the nursery program surrounding hemlock woolly adelgid.
These videos now offer optional closed captions in Spanish. If you would like a copy of the video or handouts, please contact Jill O’Donnell or Heidi Lindberg.
MSU Extension and MDARD also developed three bulletins on hemlock woolly adelgid.
- Hemlock Woolly Adelgid: A little insect that means big trouble for hemlock trees in Michigan. Hemlock woolly adelgid has been on Michigan’s “most unwanted” list for years. This bulletin explains that it threatens more than 170 million hemlock trees in Michigan forests.
- Options for Protecting Hemlock Trees from Hemlock Woolly Adelgid (E3349) published January 2017 for commercial growers. This bulletin provides information on effective insecticide products and application methods to protect hemlock trees from hemlock woolly adelgid, a serious invasive insect pest.
- How to treat hemlock trees for hemlock woolly adelgid published July 2017 for homeowners. Guidelines for homeowners with hemlock trees infested with hemlock woolly adelgid.
