The last relevant frost of the year, according to the forecast, will be tonight. From Friday to Sunday I'll collect the end-of-season sap. On Sunday, I'll bottle it up, and by Monday my season should be done. I started late (on February 16) after the first runs of the season had ended. My red maples were already starting to bud. But the weather has been cooperating and I'll end up with about half the syrup that I would have gotten during a normal year.