Sap percentage

Q: The boss and I have a small wager-the loser takes you to lunch. During the winter, does all the sap in the tree go into the roots? I can't believe that it does, as then the lumber cut in the winter would be already quite dry.

A: The moisture and sap in the tree are nearly the same year-round.

There is perhaps 1 percent more water in the winter! So, you are correct. Send me your boss' name so I can find him.


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Gene Wengert

Gene Wengert, “The Wood Doctor” has been training people in efficient use of wood for 45 years. He is extension specialist emeritus at the University of Wisconsin-Madison.