How is response growth defined in arboriculture?

Response growth in arboriculture refers specifically to the additional growth that occurs as a direct reaction to stress-induced conditions. When a tree experiences stress—whether from physical damage, environmental changes, or other factors—it activates survival mechanisms that promote faster or increased growth to recover from the stress or to compensate for losses. This type of growth may involve the production of extra shoots, branches, or foliage as the tree attempts to restore balance and ensure its continued survival.

In contrast, healthy tree practices and growth under optimal conditions typically represent growth patterns that are steady and sustainable, rather than reactive. Normal annual growth patterns are a reflection of typical growth cycles, which may not involve any additional response to stress. Thus, the emphasis on the reaction to stressors is what defines response growth, making it a unique and important concept in understanding tree health and recovery.