A maple tree is usually at least 40 years old and about 12 inches in width before it is tapped
Warm sunny days, above 40 degrees F, and frosty nights, around 20-25 degrees F, are ideal for sap flow.
The Maple season may last 4 to 6 weeks, but sap flow is heaviest for 10 to 20 days.
Each tap yields an average of 10 gallons of sap per season: that yields about one quart of syrup.
It takes about 40 gallons of sap on average to make one gallon of syrup.
As a tree increases in size you can add up to a maximum of 4 taps.
A gallon of pure Wisconsin Maple syrup weighs around 11 pounds.
The sugar content of sap averages 2.5%, compared to a sugar content in syrup of 66.5%.