What is a fundamental reason for removing lower limbs from young trees?

Removing lower limbs from young trees primarily serves to promote upward growth and enhance the overall structure of the tree. This practice encourages the tree to focus its energy on vertical growth, allowing it to develop a strong central leader and reduce the likelihood of branch crowding. When lower branches are trimmed, the tree can more effectively allocate resources to the upper canopy, which enhances light penetration and air circulation.

Additionally, proper limb removal fosters a healthier tree structure by minimizing the risk of weak branch formations and potential future decay. By creating an open canopy, air movement is improved, which can reduce the incidence of fungal diseases. This method aligns with the natural growth patterns of trees, ensuring they develop a balanced and stable structure as they mature.