A proper Tree structure prune includes all or some of the following depending on the needs of the tree and surrounding structures such as fencing, adjacent homes, outdoor living spaces, etc.
trimming, thinning, skirting, remove deadwood; provide clearance to any fence, sidewalk and neighbor house clearances. The anticipated time between this service would depend greatly on the amount of water and food the tree has annually. Cycle can run anywhere from 2-5 years.