Quote Originally Posted by riley04 View Post
Could you just go by the weather always staying above freezing instead?
Sap can turn cloudy or yellow in the middle of the season.

I generally go by the weather and signs from Mother Nature. First off, the small ponds must generally be ice-free before the trees bud. When the poplars start looking like pussy willows, it means the end is near. If there were 3 or four days of 60 degrees in a row and no freeze in sight, I would start cleaning up. And when the peepers start singing, it's over.