WOOD PARTS AND ANATOMY Taking a Look at Wood Growth Rings The reason there are two colors in a growth ring is because they are actually two different types of wood! The light wood is known as earlywood because the tree makes it in the early spring. The dark wood is called latewood because the tree makes it in the late summer. (Easy enough, right?) Determining the age of a tree is as easy as counting the growth rings! Let's get some practice!

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