While tree topping is a seemingly convenient fix for trees that have gotten too big or too tall, it is a potentially dangerous practice. The ISA (International Society of Arboriculture) condemns tree topping and deems it to be an unsafe practice. Tree topping has been proven to be harmful to trees as it removes most of the trees’ food source, leaves limbs exposed and susceptible to disease and decay, and encourages rapid and weak regrowth. Proper pruning and trimming are the more favorable alternatives. Local Arborist provides expert tree pruning and trimming services.