PORTLAND (AP) — The cold weather means the sap isn’t yet flowing in Maine, but the show must go on for Maine Maple Sunday.

More than 100 Maine sugar houses are participating in the annual event, and some had to scramble to ensure they had syrup since they’re not yet making it.

It takes 40 gallons of maple sap to make a gallon of syrup.

For sap to flow, freezing overnight temperatures need to be followed by day time temperatures in the 40- to 45-degree range. So far that hasn’t been happening.

Maine is the third-largest maple producer in the U.S. A University of Maine study indicates the industry contributes $27.7 million directly to the Maine economy.