A property owner grabs a pair of pruning shears and begins indiscriminately cutting branches from a small, stout tree. They trim too much off the top, leaving a sparsely foliated canopy. This scenario happens frequently and begs the question: Can overpruning kill a tree? As your trusted provider of tree services in Gaston, OR, Oregon Arborist explains the consequences below.
What Is Overpruning?
Overpruning occurs when you prune too many limbs from the top of a tree. The significant canopy loss can lead to numerous issues, like pruning shock. Pruning shock weakens the tree’s immunity and natural defenses because it redirects all its resources to healing the wounds and reproducing leaves to take the place of the clipped ones.
Can Overpruning Kill a Tree?
Most arborists recommend learning how to prune a tree or scheduling a pruning service before picking up the clippers. Otherwise, you could do more harm than good when trying to improve the tree’s shape or remove bad limbs. You’ll learn more about the long-term consequences of overpruning below.
Your Tree Could Sustain Wind Damage or Sunburn
Overpruning may not immediately kill your specimen. However, it can introduce new sources of tree stress. The canopy doesn’t just provide shade coverage for you or your shade-loving plants; it also protects the tree. When you expose bark that isn’t adapted to intense sunlight, you accidentally enable sunburns.
Tree canopies also help specimens move flexibly with the wind. A tree without sufficient foliage is almost just a stick in the mud. It can’t bend as it should, and may break at the trunk.
The Wounds May Fester and Invite Pests
Can overpruning kill a tree? If the specimen doesn’t overcome pruning shock fast enough, it may succumb to bugs or fungi that take advantage of the exposed interior tissues. Bark protects the delicate wood beneath from opportunistic organisms.
Once a tree becomes shocked, it won’t defend itself adequately from these invaders. They may overtake the tree before it has the chance to scab its wounds and thwart the invasion.
Your Tree Can’t Feed Itself
Overpruning a tree throws off its root-to-shoot ratio. That means unbalanced resource allocation, which can result in further root or canopy dieback as an effort to balance the distribution of resources. Foliage enables the tree to photosynthesize while roots draw water and nutrients from the ground. If pruning throws off either process, the tree may starve or become overhydrated.
It Jeopardizes Structural Integrity
Poor structure is one of the least obvious reasons for tree decline. Sure, your specimen may produce new branches to take the place of the pruned ones. However, those limbs may not be as sturdy and sound. The tree must produce new growth near or around the old branch scars, which means poorer structural strength.
Avoid Overpruning With Oregon Arborist’s Tree Trimming and Pruning Services in Gaston, Oregon
Can overpruning kill a tree? Overpruning typically doesn’t directly kill a tree, but the consequences can have lasting effects on its health. Check out our pruning a dying tree guide to learn about proper techniques. You can also contact Oregon Arborist at 503-899-4166 about tree trimming and pruning services in Gaston, Oregon.