What is wrong with topping trees?
Topping is the indiscriminate cutting back of a tree’s branches with regard only to the amount of reduction to be done. The wounds created by topping introduce decay at the wounding site, which will permanently weaken the branch, increasing the possibility of failure in the future. In addition, when the crown of the tree is dramatically reduced, the tree loses much energy-making ability, which will affect tree vitality, the tree’s ability to defend itself from pathogens and root growth. Topping also normally costs more than proper pruning. So you pay more money to ruin your tree. That’s why you shouldn’t top your tree.