Tree Pruning

Tree pruning is the selective removal of branches to improve structure, remove hazards and maintain health. Good pruning is subtle. You should be able to look at a well-pruned tree and not immediately see where cuts were made. Poor pruning, such as topping, leaves large wounds, triggers weak regrowth and can shorten a tree's life. Common goals include removing dead, diseased or broken limbs, raising the canopy to clear roofs, walkways or vehicles, reducing weight on branches that could fail, and thinning crowded growth so light and air can move through. Hazard pruning near power lines, however, should be left to utility-qualified professionals, and homeowners should never attempt it. Many pruning jobs are safe for a skilled gardener with the right pole saw and pruner. Anything that requires climbing, rigging, a chainsaw above shoulder height, or work near buildings and wires is best left to a trained tree care professional. Credentials such as an ISA Certified Arborist are a useful signal, since the certification is issued by the International Society of Arboriculture, and you can verify a name on the organization's public directory. Timing varies by species. Late winter dormancy is a common choice because bare branches are easy to assess. Some trees, such as maples and birches, bleed sap in spring and are better pruned in summer. Oaks may be subject to seasonal restrictions in regions with oak wilt. Ask your provider about local rules. Always get a written scope that spells out which branches will be removed, how much canopy will be taken off, and who handles debris.

An assessment walk-around, then pruning with hand saws, pole saws or climbing gear, followed by brush cleanup. A reputable pro explains what they will cut and why, and avoids removing more than a modest share of the canopy at once.

Often late winter for dormant pruning; summer for sap-bleeding species. Dead or hazardous limbs can be removed any time.

Small branches within reach are fine for DIY with proper tools and eye protection. Hire for large limbs, any climbing, work near power lines or structures, or trees you are unsure about.

Are you or your crew ISA Certified Arborists? Will you provide a written scope listing what will be cut? Do you top trees, and why or why not? Do you carry liability and workers compensation coverage? Who handles brush, logs and cleanup?