Although the terms are sometimes used interchangeably, pruning and trimming are different. In most cases, trimming is performed twice a year, while pruning is done annually. Pruning is removing unnecessary branches. It is also what is being done when you shape a tree or bush to grow into a certain desirable shape. Regular pruning is essential to ensure your trees have a long, healthy life.
Trimming, on the other hand, promotes healthy growth. When pruning or trimming,correct technique and timing is critical if you want the best results. Pruning and trimming are essential techniques that keep your trees looking beautiful year-round. Topping off is when a large branch is cut off of a mature tree, usually at the top. This technique was performed in the older days and is rarely practiced anymore, at least not by professionals. This type of pruning produces a large wound which encourages disease and decay. The branches that reappear later tend to break off easily, making the tree a potential hazard later. Not to mention, it is seriously ugly too. We as a company have chosen to no longer practice this technique.