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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.
Growth habit: A pyramid-shaped evergreen tree growing to 30 feet tall and 15 feet wide. The leaves are bright green, oval and up to 3 inches long with a pointed tip. Feedings: Apply a general garden fertilizer to new trees in March and June for the first three years after planting.