What is the labor-intensive type of tree pruning known as?

Pollarding is a labor-intensive type of tree pruning that involves cutting back the upper branches of a tree to promote new growth. This practice is typically done to maintain trees at a manageable height while encouraging a dense crown of foliage. It is most often performed on certain types of trees that respond well to this method, such as willows, poplars, and some species of oak.

The technique involves cutting the tree back to a specific height, which allows the tree to produce a new set of shoots each year, creating a visually appealing and bushy appearance. This approach also minimizes the risk of damage from broken branches, particularly in urban settings where trees may be near buildings or power lines. Additionally, pollarding can be beneficial for certain ecological reasons, allowing for better light penetration and encouraging a diverse range of understory plants.

By contrast, thinning, coppicing, and heading are different pruning techniques that serve other purposes or utilize different methods, making pollarding distinct in its approach and intent.