There are three ways to farm cinnamon. The first way is to find a naturally generated cinnamon tree and use it to farm cinnamon by waiting for the cinnamon to ripen, then harvesting. The second way is to combine a piece of cinnamon with a jungle sapling, plant it, and harvesting the tree like you would a natural tree.The last way is to purchase a Cinnamon Sapling from The Market.
Unlike other tree-produced foods, the cinnamon is obtained from the trunk of the tree. When unripe, the logs appear as durable as any other tree. When ripe, they break with a single punch and an unripe log reappears when the cinnamon drops.
Note: You must use ground cinnamon which is made by placing mortar and pestle and raw cinnamon together in the crafting table.