Which pruning technique is least appropriate for young, large-maturing trees with multiple leaders?

When managing the growth of young, large-maturing trees with multiple leaders, the focus should generally be on establishing a strong structure to support future growth. The technique of only removing dead branches does not contribute to this goal. It addresses immediate concerns but neglects the overall structure and health of the tree.

In contrast, thinning the crown can help improve air circulation and light penetration, which aids in the health of the tree. Pruning to maintain a central leader is crucial for young trees with multiple leaders, as it encourages a single dominant stem and prevents the development of competing tops that could lead to structural weakness. Reducing the length of branches can also help by minimizing weight and preventing future breakage.

Using a more proactive approach, like focusing on the structural integrity of the tree, is essential for long-term health. Therefore, the practice of merely removing dead branches does not contribute to shaping or supporting the tree's growth effectively.