Heidi Frei, Forest Health Specialist for the Michigan’s Department of Natural Resources, gives us an inside look at some beautiful spots at the Saugatuck Dunes and PJ Hoffmaster State Park in Muskegon. These areas and others on the shores of Lake Michigan are dealing with eastern hemlock trees that are being majorly affected by the insect known as hemlock woolly adelgid. Learn about the treatment plan Heidi and her crew are putting into effect to keep these trees alive!