What is a potential consequence of improper crown thinning?

Improper crown thinning can lead to a weakened tree structure. This practice involves selectively removing branches to allow more sunlight and air to penetrate the tree's canopy. However, if the thinning is done incorrectly—such as removing too many branches or cutting them too close to the trunk—it can destabilize the tree. This instability arises because the tree relies on its leaves and branches for balance and structural support. A tree that is too thin may sway more dangerously in the wind or be less able to withstand the weight of snow or ice, ultimately compromising its health and longevity.

Improper crown thinning typically does not lead to improved air circulation or increased sunlight reaching the ground, as those outcomes rely on correct execution of the thinning process. Additionally, it does not enhance the growth of lower branches; in fact, excessive thinning reduces the tree's ability to regenerate lower foliage, as the tree redirects its energy into the remaining branches, often leaving the lower ones lacking in sunlight and nutrients.