Certified Arborist Practice Exam 2025 – Comprehensive All-in-One Guide to Master Your Certification!

The practice described in the question refers to a specific technique in tree care. The correct term for removing foliage and laterals from the interior of a tree crown is "Lion-tailing." This technique involves selectively removing inner branches and foliage to increase light penetration and air movement through the crown, which can enhance the growth of the outer canopy.

Lion-tailing is particularly effective for promoting a healthier tree structure by reducing the likelihood of disease and structural issues often associated with overly dense foliage. It helps to maintain the tree's natural shape while ensuring that the tree gets enough sunlight and airflow.

Subordination, on the other hand, refers to reducing a branch's competitive dominance without removing it completely, while raising pertains to pruning lower branches to increase clearance. Thinning cuts involve the selective removal of branches to reduce density and improve overall tree health, but they don't necessarily focus on the inner crown like lion-tailing does.