How many kinds of maple trees are there? Can they all be tapped?
There are over 100 varieties of maple tree (genus Acer), but only the sugar maple (Acer saccharum) has a high enough concentration of natural sugar to easily make maple syrup. Other maple varieties, including the black maple (Acer nigrum), red maple (Acer rubrum), and silver maple (Acer saccharinum), have been tapped in various parts of Canada to produce syrup.