Texas FFA Nursery Landscape Practice Exam

When pruning cuts are made on woody trees, one should not cut into or behind the _________.

1. internode

2. interstitial

3. collar

4. axil

The correct answer is: collar

The correct choice is the "collar," which refers to the swollen area of tissue at the base of a branch where it meets the trunk or larger branch. This collar contains important tissues that help in the healing process of the tree. When pruned properly, the collar aids in compartmentalizing the wound and promoting faster healing, thereby reducing the risk of disease and decay. Making cuts into or beyond the collar can disrupt the tree's natural healing process. It can lead to larger wounds that are more difficult for the tree to close off, increasing the chances of infection or rot. Properly positioning pruning cuts just outside the collar allows the tree to maintain its structural integrity and health. The other terms have specific meanings in plant biology and pruning practices but do not relate directly to important anatomical features for pruning cuts in woody trees like the collar does. Understanding the role of the collar is critical for effective tree care and management.