If you are unable to maintain your garden due to the inability to prune your trees properly, you should consider hiring a professional tree care service to do this work for you. Tree pruning helps to promote a proper tree structure and address any safety issues. In most cases, pruning is done in two ways: structural and restoration. Structural pruning involves removing limbs that are diseased, cracked, or broken, as well as dead limbs and end weight. Thinner branches are beneficial because they can bring light to your garden.