Tree Trimming Basics

Tree Trimming is the practice of cutting or removing certain branches on a living tree to enhance its health, promote a stronger structure, maintain safety, improve aesthetics or maximize fruit production. Ideally, tree trimming should be done by an experienced and qualified professional, such as a Certified Arborist. It is recommended that a pruning plan be prepared before beginning any work. This plan should include the specific goals of the pruning and the appropriate times to execute each goal. A good plan will also address the risks and potential hazards associated with the work to be performed.

Pruning for health reasons focuses on removing diseased or insect-infested wood, opening up the canopy for sunlight penetration and reducing pest problems, and eliminating crossing or rubbing branches. A regular schedule of pruning will help maintain a vigorous plant and reduce the risk of damage during severe weather events.

Often, large, mature trees require periodic thinning for improved light penetration and reduced stress on selected limbs due to weight, wind or ice. The process of thinning should be done carefully as excessive thinning can have adverse effects on some species.

For small ornamental landscape and fruit trees, thinning can be used to stimulate branching or to reduce the height of the plant. It should always be conducted on healthy plants. Leaving stubs of removed branches can create a wound that won’t heal and could become a site for wood rot fungi. When thinning, it is recommended to prune to a lateral branch of the desired size rather than removing a stub directly above the point of attachment.

Some young trees need low temporary branches to provide sustenance and support as they grow taller. These should be pruned off gradually over a period of years and before they reach one inch in diameter. However, dead branches that hang down can pose safety concerns and should be removed as soon as they are noticed.

The frequency of tree trimming depends on the species, climate conditions and the individual plant’s needs. Generally, deciduous plants need to be trimmed more frequently than evergreens. It is also important to understand the difference between the different types of pruning techniques and the effect each has on a plant. Pruning can be a very complex task, especially on larger and older shade trees, and it is always best to leave the trimming of these plants to qualified arborists and tree care professionals. In addition, it is important to remember that each cut on a live plant has long-term effects and should be carefully planned.

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