Crown thinning is the selective pruning of branches throughout the crown. This increases light penetration and air circulation throughout the crown. The overall shape of the tree is not significantly changed.
This reduces the “sail effect” that can put extra stress on the tree in high winds. Dead, diseased or damaged wood is removed at the same time. No more than 33% of the crown is removed at any one time.
All smaller diameter branches (up to 5 inches) are chipped and can then be used as garden mulch. Larger branches are cut, split and seasoned for firewood. Nothing is wasted.