Which factor can increase a tree's risk of disease?

Over-pruning a tree can significantly increase its risk of disease due to several key reasons. When excessive pruning occurs, it removes not only the tree's foliage but also essential branches that are necessary for its overall health and structural integrity. This can lead to increased stress on the tree, making it more susceptible to diseases and pests.

Additionally, over-pruning can create open wounds on the tree where pathogens can enter. These wounds can become entry points for various diseases, as the tree's natural defenses are compromised. A tree that is pruned too much may also struggle to photosynthesize efficiently, leading to weaker growth and further vulnerability.

Healthy tree maintenance practices involve understanding the proper amount and timing for pruning, which helps in maintaining the balance between promoting growth and reducing the risk of disease, thereby ensuring the tree remains robust and resilient.