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How Trees Grow The buds, root tips, and cambium layer are the three growing parts of the tree. Buds elongate the branches and widen the crown (branches and leaves), the cambium layer adds diameter to the tree, and the root tips grow in length to support the growth of the tree.
Broad-leaved tree: a tree with thin, flat leaves instead of needles. Conifer: a tree with cones instead of flowers. Evergreen: a plant that stays green all year round. Nutrients: parts of food, like vitamins, that are used for growth. Sap: food that the tree makes and stores for growth. Sapling: a young tree.