To 20-30 feet tall; Cinnamon is mainly used in baked goods, drinks, incense, and perfumes, and is a wonderful tea for a cough. The bark of the smaller branches is the part used to make the spice cinnamon. Cinnamon can be grown easily in Hawaii with adequate rainfall. Cinnamon trees are very sensitive to herbicides. Do not use herbicides around the trees; mulch is a better weed control for this tree.