From Seedling to Sapling to Sugar Maker
The maple tree grows about 1 foot per year for the first 30 to 40 years of life. The following chart shows the classification of a maple tree as it grows:
A sugar maple is ready to be tapped once the diameter reaches 10-12 inches. (Circumference = π × diameter. Therefore, the circumference should be at least 31.4 inches.)
Maple Fractals