Maple Sap Season 2026: When to Tap, and Is Sap Running Now

It sweeps south to north over roughly twelve weeks. Kentucky producers tap in late December or early January; the Ohio Valley, Missouri, southern Illinois and the southern Appalachians follow in January; Pennsylvania, Ohio and the mid-Atlantic in late January and February; New York and southern New England in February; Vermont, New Hampshire and southern Maine in mid to late February; Wisconsin, Minnesota and the Dakotas in March; and northern Maine and Michigan's Upper Peninsula last of all, running into late April. The table on this page lists every state in the order its season opens.

Sap runs on a freeze-thaw cycle, not on a single temperature. University of Minnesota Extension puts it plainly: sap runs best when temperatures drop below freezing at night and rise into the 40s during the day. Ohio State Extension gives the thaw trigger as warming above freezing, ideally to about 40 degrees. Cornell describes ideal conditions as daytime highs in the high 30s to low 40s with freezing nights. Notably, none of them puts a lower bound on the overnight freeze: the widely repeated "nights in the low 20s are ideal" figure is folklore rather than published guidance.

Because the freeze-thaw cycle is what generates the pressure that pushes sap out. Research from the University of Vermont's Proctor Maple Research Center describes it as a purely physical mechanism: on freezing, liquid is drawn into normally gas-filled fiber cells by cryostatic suction and freezes there, compressing the gas trapped inside; on thawing, that stored pressure is released into the sap-carrying vessels and drives sap out of a taphole. The freeze also creates suction that pulls water up through the roots to recharge the system. Warm weather with no freezing nights gives you nothing, because nothing recharges.

Two separate things, which Ohio State's maple programme is careful to keep apart. "Buddy" sap comes from trees whose buds are preparing to open: the chemistry changes and the syrup tastes wrong. "Sour sap" is microbial, and above 50 degrees microbial growth in sap becomes rapid, so the risk peaks in the warm end of the season. Ohio State notes that producers usually blame the buds when the real culprit is microbial buildup in their own tubing. Either way, when the syrup tastes off or the buds visibly swell, the year is done.

For sugar maple, about 40 gallons. The rule behind that is the "Rule of 86", devised in 1946 by C.H. Jones at the University of Vermont: divide 86 by the sap's sugar percentage. At 2 percent sugar, typical for sugar maple, that is 43 to 1. Lower-sugar species take more: University of Minnesota Extension says roughly twice as much for other maples, up to 60 gallons for box elder. Alaska's birch syrup industry works at something like 110 to 1, which is why birch syrup costs what it does.

Extension guidance clusters at 10 to 12 inches in diameter measured four and a half feet above the ground. University of Maine Extension says at least 10 inches; Ohio State and University of Minnesota Extension both say 12. Modern conservative guidance is one tap for a 10 to 18 inch tree, a second only above roughly 18 to 25 inches, and no more than two or three even on a large healthy tree. The standard hole is 5/16 inch and about 1.5 inches deep, per Cornell and Ohio State, and Ohio State says never past 2 inches.

Vermont dominates: about 3.06 million gallons in 2025, more than the next three states combined, on roughly 8.35 million taps. New York is second at about 829,000 gallons, then Wisconsin at about 556,000 and Maine at about 549,000. USDA NASS surveys 13 states in total for maple syrup, and added Connecticut, Indiana, Massachusetts, Minnesota, Ohio and West Virginia to that survey in 2024. National production in 2025 was around 5.7 million gallons on about 16.8 million taps.

If it is a maple of any species and it is at least 10 to 12 inches across at chest height, yes, and it is genuinely one of the most rewarding things you can do with a February weekend. You need a drill with a 5/16 inch bit, a spout, something to catch sap in, and somewhere outdoors to boil, because evaporating tens of gallons of water inside a house will damage it. A dozen taps in a good year is roughly three quarts of syrup, per University of Maine Extension yield figures.