Tree trimming is the process of removing some tree branches and limbs from a tree. This is usually done when a tree is overgrown or if it is already starting to become a hazard. Some trees take many years to grow while others grow a little more quickly. So the frequency of when you should trim a tree depends on the kind of tree you have in your property.
It usually only requires a physical inspection for you to know whether it is already time to trim branches and limbs. Pay a little attention to the trees on your property and when they seem like they need a trim, then call for assistance from a tree care and maintenance expert.