You can plant certain types of trees such as appletrees, coco trees, golden apple trees, cookie trees. & more!
Find a clear area with enough room for the tree to grow. Do not plant in corners or you will just waste bonemeal. Once you find a suitable area to start your grove, right click the ground with a hoe to prepare the dirt. Then while holding apple/cocoa beans/golden apple/cookie right click the prepared soil. This will plant a sapling. Now feed the sapling by right clicking with bonemeal, it should only take one but may take 5-8 before it grows. Now the tree has grown, you may optionally place a sign on the tree and type on the first line [Appleseed] regardless of the item planted. This sign will show the tree type in green text. When the tree needs to be fertilized (with bonemeal) the tree type text will turn red. It only takes 10 bonemeal to fully fertilize your tree.
The items will drop at random intervals so several trees of the same item are suggested. As well as the tree will stop dropping items once a certain amount are laying around. Golden Apple drops take a while so be patient. Harvesting any part of the tree may break it.