It has been warm this week in MN. Too warm for March! while it may be nice weather for humans, maple trees like to wake up from winter slow. They like the days to be above freezing and the nights to be below freezing to get the most sap from the tree. It is what is called the “pumping” action of the freeze thaw cycle. I have started boiling my sap down to concentrate it into Maple syrup. I’ll explain how to do that on another page.