Tree trimming and tree pruning is the process of cutting and removing dead branches. Tree rimming usually refers to shrubs and tree pruning usually refers to trees. Tree pruning is performed in order to protect the tree or shrub while trimming is performed to ensure perfect growth of the shrub or hedge. Tree trimming service on the other hand is done to remove overgrown bushes which prevents the shrub from receiving enough moisture and light. Tree pruning service involves removal or dead or loose or infected branches so that the shrub can flourish properly. It is also done to give a particular shape to the shrub for aesthetic purposes.