Hemlock woolly adelgid found at Benzie County country club A new location of invasive hemlock woolly adelgid has been found in Benzie County, approximately 50 miles north of what was previously thought to be the northern edge of infestation in Mason County, Michigan. Northwest Michigan Invasive Species Network staff members conducting a winter survey for the pest detected the insects on hemlock trees at Crystal Downs Country Club in Frankfort.
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