Three species of maple trees are predominantly used to produce maple syrup: the Sugar Maple, the Black Maple, and the Red Maple. However, the sugar maple is the principal source because of the high sugar content in the sap of this species. Mature trees reach 300 to 400 years of age, 27 to 37 m in height, and 76 to 91cm in diameter. Maples are usually tapped beginning at 30 to 40 years of age. Each tree can support between one to three taps, depending on its trunk diameter. Maple trees can be continuously tapped for sap for over 100 years.