Michigan’s Department of Agriculture and Rural Development (MDARD) has broadened its interior quarantine for the hemlock woolly adelgid, a pervasive threat to the state’s 170 million hemlock trees. Effective from August 1, 2023, the updated quarantine encompasses Benzie and Manistee counties and certain parts of Washtenaw County surrounding the Nichols Arboretum. Previously, this quarantine was strictly enforced within Allegan, Mason, Muskegon, Oceana, and Ottawa counties. The quarantine guidelines strictly regulate the transfer of hemlock, tiger-tail spruce trees, certain forest products, and nursery stock from the quarantined regions to other parts of the state. The newly identified regions in the quarantine … Continue reading Quarantine Expanded: Michigan Wages War on Hemlock Woolly Adelgid