What is the primary purpose of shearing in tree maintenance?

The primary purpose of shearing in tree maintenance is to shape the foliage of the tree. Shearing involves cutting back the outermost growth of branches and leaves to create a specific aesthetic form or to maintain a certain size, particularly in ornamental trees and shrubs. This practice helps in promoting a denser and fuller appearance by encouraging new growth from beneath the cut areas, while also maintaining the overall health of the tree by allowing sunlight and air to reach inner branches.

In contrast, increasing the height of the tree would involve different methods, such as selective pruning or crown lifting. Removing the entire tree goes against the principles of shearing, which is focused on maintenance rather than elimination. Enhancing root growth is not a direct result of shearing; instead, it requires different types of soil management, watering, and fertilization strategies. Overall, shearing is fundamentally about managing the tree's canopy and appearance rather than altering its height, removing it, or focusing on root development.