There are four varieties of Sugar Maple trees. They thrive on steep, rich soils and long, bitter winters. While these trees can be found in several areas of the world, these species find the proper climatic environment for maple sugaring only in parts of southern Ontario, the Province of Quebec and the Maritimes in Canada; the New England states, and ten other states as far west as Wisconsin and Minnesota in the USA. Sugar maples reach a tappable size, under the best conditions, in about 40 years. A carefully tapped tree will give, drop by drop, about 12 quarts (litres) of sap on a warm spring day, and could continue to give sap for a century. During the maple sugaring season, which lasts about 6 weeks, an average maple tree will yield between 35 and 50 quarts (litres) of sap, which will produce between 1 and 1.5 quarts (litres) of Pure Maple Syrup. The main maple producing tree is: Sugar Maple The other types of maple trees, namely the Red Maple and Silver Maple, are also used for maple syrup production, althought their sap has a lower sugar concentration.