How long does the sugaring season last?
The normal maple season in our area of Vermont lasts 4 to 6 weeks, but sap flow is heaviest for 10 to 20 days, sometimes starting as early as February in southern Vermont and lasting into late April in northern Vermont. Sap flowing in high volumes is called a “run.” Warm sunny days (above 40 degrees F) following frosty nights (below freezing) are ideal for sap flow. The harvest season ends with the arrival of warm spring nights and early bud development in the trees, usually a few days after the frogs start chirping.
