Tree Trimming vs Tree Pruning: What's the Difference?
Quick answer: Most people use "trimming" and "pruning" to mean the same thing. Arborists tend to say pruning for removing selected branches to improve a tree's health, structure or safety. Trimming often means cutting back overgrowth for shape or clearance. What matters more than the word is where each cut is made and how much is removed.
Pruning: for the tree's health and structure
- Removing dead, diseased or broken branches
- Thinning the crown to reduce weight and let light and air through
- Correcting weak forks and crossing branches
- Structural pruning on young trees
Trimming: for shape and clearance
- Cutting branches back from the roof, gutters, driveway or sidewalk
- Keeping hedges and small ornamental trees tidy
- Raising the canopy for headroom
What good work looks like
- Cuts made just outside the branch collar (the slightly swollen area where a branch joins the trunk), not flush and not leaving stubs
- No more than a quarter of the crown removed in one season, per City of Boise guidance
- No topping. Cutting main stems back to stubs causes weak, fast regrowth and decay.
Which one do you need?
If you're not sure, describe the problem ("branches over the roof", "dead limbs", "too dense") and let the company recommend the work. Tree trimming & pruning in Boise →
Source: City of Boise: Tree Care