Last year, drought conditions in certain areas of New Brunswick led to a decrease in groundwater levels, causing concern among maple harvesters about the potential impact on this year’s yield. The combination of reduced rainfall and higher temperatures in 2025 resulted in many wells and streams drying up.
David Briggs, the owner of Briggs Maples in Hillsborough, explained that lower groundwater levels and less sunlight can hinder photosynthesis in maple trees, leading to a decrease in sap production. However, he noted that the heat can also stimulate trees to produce more sugar, potentially resulting in sweeter sap this year. Yet, the overall quantity of sap may be affected by the lack of rainfall.
Briggs emphasized the complexity of predicting sap production in trees, expressing uncertainty about what to expect for the upcoming season. Due to the challenges posed by climate change, including inconsistent temperatures and altered freeze-thaw cycles, estimating sap flow has become increasingly difficult.
In response to the changing seasons, tapping maple trees has shifted earlier, with harvesting now starting in mid- or even early February compared to the traditional March timeframe. Jane Scott, co-owner of Dumfries Maples near Nackawic, observed a significant decrease in water levels in streams on her farm last summer. She expressed concerns about the potential impact on their maple season but will only know the true effect at the end of the season.
As both Briggs and Scott navigate the uncertainties brought by climate variations, they remain vigilant in adapting their maple harvesting practices to the evolving conditions.