What is typically the result of a tree's reaction wood?

The development of reaction wood is a direct response to mechanical stress experienced by a tree, such as leaning due to wind or uneven weight distribution caused by heavy branch growth. In species like conifers, this reaction wood is known as compression wood, which forms on the lower side of a leaning stem to help counterbalance the force and stabilize the tree. In broadleaf species, tension wood develops on the upper side, providing extra cellular support and maintaining the tree’s structural integrity.

This ability to adapt through the formation of reaction wood is crucial for a tree's survival, as it enables proper orientation toward sunlight and helps prevent toppling in adverse conditions. Hence, understanding the role of reaction wood in maintaining the tree's stability is vital for arborists, as they often encounter trees dealing with various external stresses in urban landscapes or natural environments.