This month, we celebrate the minor festival of Tu B’shvat — the 15th day of the Hebrew calendar month of Shevat. We call Tu B’shvat the “birthday” of trees, because it is a marker of time from which we count whether a tree is old enough to bear tithe-worthy fruit.
That is, is this tree mature enough, strong enough, to bear fruit from which we must dedicate a portion to others?