What does the term 'branch union' refer to?

The term 'branch union' refers specifically to the point where a branch originates from the trunk or another branch. This definition highlights the critical aspect of tree structure where branches develop and grow, impacting the overall health, stability, and aesthetics of the tree. Understanding branch unions is essential for effective pruning and tree maintenance, as weak or poorly formed unions can lead to structural issues and increased risk of branch failure. Proper identification of a branch union helps arborists assess the tree's health and make informed decisions regarding care and management practices.