Topping is the drastic removal or cutting back of large branches in mature trees. The tree is sheared like a hedge and the main branches are cut to stubs. Many homeowners top trees when they reach heights considered unsafe fearing a strong wind might blow large trees over. However, the extensive root system of a healthy tree provides adequate support for the tree. Below are a number of reasons why deciduous trees should not be topped.

Starvation: Trees need leaves to manufacture starches during photosynthesis. A tree’s transport system moves starches from the leaves to the roots. Topping remov...