Some trees in Michigan are more susceptible to ice damage during freezing conditions according to the Michigan Department of Natural Resources. As ice builds up, branches can crack and break under the added weight, leading to tree damage and potential hazards. Weaker wood trees like Silver Maple, mulberries, and some elms are the most susceptible.
Fluctuating winter weather can cause long term damage to trees. Sunlight can warm the southside of thin-barked tree causing sap to melt and then refreeze when temperatures drop. This freeze-thaw cycle can rupture the bark, leading to internal damage.
Department of Natural Resources Forester Lawrence Law recommends covering the southside of the tree with burlap to provide shade.
“Once the tree has no leaves and it’s winter, it doesn’t fully warm up that side of the tree, so it won’t freeze again. It will just stay dormant within the bark there, and that tree is much more likely to not have frost damage on the bark,” says Law.
Law says tree maintenance can play a crucial role in minimizing ice storm damage.
“So trees that have not been maintained in terms of pruning every 5 to 10 years usually have poor branching, some weak unions amongst branches to the tree— especially those silver Maples that are very prevalent in Southeast Michigan.”
Law also suggests homeowners consult an International Society of Arboriculture (ISA) certified arborist, especially those with a Tree Risk Assessment Qualification (TRAQ), to determine tree risk during icy weather.
Law also says if branches fall on power lines, residents should avoid approaching them and report the issue to local utility companies immediately.
Editor's note: The Michigan Department of Natural Resources is a sponsor of WCMU. We report on them as we do with any other organization.
