In this Inside Halton article, Chris Deathe from Davey's Hamilton office, tells us the extreme temperature fluctuations are causing our trees to 'explode'. 

Posted: January 29, 2026

An upward view of a tall tree with snow on its trunkAs a deep freeze sets in, with nighttime temperatures dropping to -31 C in some parts of Ontario and the American Midwest, concerns over “exploding trees” — a phenomenon where freezing sap can cause bark to snap with the sound of a gunshot — are trending across North American media.

The U.S. National Forest Foundation explains online that while trees have evolved to withstand wintry weather, during spells of extreme cold or when trees haven’t had time to acclimate, the sap inside the tree can begin to freeze.

“Sap contains water so it expands when frozen, putting pressure on the bark, which can break and create an explosion,” the foundation explains. “There are numerous historic and current observations of trees exploding due to extreme cold.”

To continue reading to find Chris' advice, click here. 

For more information, contact the Hamilton office. 

The Davey Tree Expert Company provides research-driven tree services, grounds maintenance and environmental and utility infrastructure consulting for residential, utility, commercial and environmental partners in the U.S. and Canada. Established in 1880 and headquartered in Kent, Ohio, Davey has over 12,000 employees who create and deliver sustainable solutions. Davey continues to grow through expertise with the SEED Campus, its newest commitment to training, research and safety. Become part of the Davey legacy by applying today and join one of the top ten largest employee-owned companies in the U.S.

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