Various brands of local maple syrup on display (Photo: Tim Durkin/ Quinte News)
It is being described as an infestation by one local maple syrup producer.
Forest tent caterpillars have hit millions of trees in maple country, which includes Vermont, New York State, Quebec and southern Ontario.
The caterpillars eat all the leaves off maple trees, which lowers the sugar content in the sap.
Local producer Terry Gervais (Tyendinaga Township) says it is going to take more sap to producer syrup in 2018.
He says it is the worst his crop has ever been hit, but for many producers it is cyclical.
So far, Trillium Ridge Sugarworks has done 2,200 hundred litres of syrup.
They are expected to be down about 2,000 litres this year.
