WEMU News Insects Threaten Michigan Hemlock Trees, May Face Similar Fate as Ash Trees 89.1 WEMU Published May 28, 2013 at 8:02 AM EDT Facebook Twitter LinkedIn Email Listen Agricultural Experiment Station / © Bugwood.org / CC-BY-3.0-US Hemlock trees in Michigan face an insect threat similar to the bug that wiped out most of the state's ash trees. WEMU's Bob Eccles has the story.