You search online for someone to work on your trees and immediately hit a wall of conflicting terminology. Some companies advertise “tree trimming.” Others offer “tree pruning.” Some use both terms interchangeably. A few throw in “tree cutting,” “tree shaping,” and “tree maintenance” for good measure.
Are these different services? Does the terminology matter? And when you call a tree company, which one should you be asking for?
The short answer: trimming and pruning are related but not identical, and the distinction matters more than most homeowners realize. Using the right term helps you communicate clearly with your tree service company and ensures you get the outcome you actually want.
Here is what each term means, how they differ, and how to know which one your trees need.
The Technical Difference
In the professional arboriculture world, the terms have distinct meanings.
Pruning is the selective removal of specific branches for a defined purpose: improving the tree’s health, correcting structural problems, reducing risk, managing size, or promoting better growth. Pruning involves making targeted cuts based on the tree’s biology, species, condition, and goals.
Pruning is guided by science. An arborist pruning a tree considers branch collar placement, weight distribution, wind load, disease prevention, compartmentalization, and the tree’s long-term structure. Every cut is intentional. Pruning standards (ANSI A300 and ISA Best Management Practices) define how pruning should be performed.
The main types of professional pruning include crown cleaning (removing dead, dying, and diseased branches), crown thinning (selectively opening the interior canopy for airflow and wind resistance), crown reduction (shortening branches to reduce height or spread), and crown raising (removing lower branches for clearance).
Trimming generally refers to cutting back overgrown vegetation to maintain a desired shape or size. In the landscape industry, trimming is most commonly associated with hedges, shrubs, and ornamental plantings. When someone trims a hedge, they are cutting the exterior to maintain a uniform shape, not making selective interior cuts based on plant biology.
When applied to trees, “trimming” is the informal, everyday term homeowners use to describe any kind of tree cutting work. When a homeowner says “I need my tree trimmed,” they usually mean one of several things: they want dead branches removed, they want the canopy reduced, they want branches cleared from their roof or power lines, or they want the tree to look neater.
Why the Distinction Matters
The problem with using “trimming” when you mean “pruning” is not just semantics. It affects the quality of work you receive.
When a homeowner asks for their tree to be “trimmed,” a knowledgeable company will ask clarifying questions to determine what the homeowner actually needs. Do you want dead branches removed? Do you want the canopy thinned for light? Do you want the height reduced? Each of these is a different pruning operation with different techniques and different impacts on the tree.
A less knowledgeable company, or one that prioritizes speed over quality, may interpret “trim” as “cut it back” and proceed to hack off branches without regard for proper technique, branch collar placement, or how much canopy the tree can safely lose.
This is how trees end up topped, lion-tailed, or over-pruned. The homeowner asked for a “trim” and got a haircut that damaged the tree’s health and structure for years to come.
Using specific pruning terminology gives the tree service company clear direction and helps you evaluate whether they know what they are doing. If you ask for “crown thinning to improve airflow” and the company does not know what that means, that tells you something important about their expertise.
What Homeowners Usually Need
When homeowners call a tree service and say they need their trees “trimmed,” here is what they typically need, translated into proper arboricultural terms:
“My tree has dead branches.” You need crown cleaning. This is the removal of dead, dying, diseased, and broken branches from the canopy. It is the most basic and important maintenance operation for any tree. Crown cleaning improves safety, appearance, and tree health without changing the tree’s size or shape.
“My tree is too dense and blocks all the light.” You need crown thinning. Thinning selectively removes interior branches to open the canopy, allowing more light and air to pass through. It reduces wind resistance and makes the tree more storm-resistant. A properly thinned tree looks the same from the outside but is more open and airy within.
“My tree is too tall and branches are hitting my roof.” You need crown reduction. Reduction shortens the tree’s branches by cutting them back to a lateral branch that is large enough to assume the terminal role. This reduces the tree’s overall height and spread while maintaining its natural shape. Crown reduction is the proper alternative to topping.
“I can’t walk under my tree without ducking.” You need crown raising. This involves removing the lowest branches to increase clearance beneath the canopy. Crown raising gives you room to walk, mow, and park under the tree without affecting the upper canopy.
“My tree just looks messy and overgrown.” You probably need a combination of crown cleaning and light thinning. Removing dead wood and selectively thinning overcrowded areas will make the tree look dramatically better without removing too much canopy.
What Hedges and Shrubs Need
For hedges, shrubs, and ornamental plantings, “trimming” is the appropriate term. Hedge trimming involves shearing the exterior of the plant to maintain a uniform shape and size. This is done with hedge trimmers or shears, not with the pruning saws and loppers used on trees.
Shrubs and hedges can also benefit from selective pruning (called rejuvenation pruning or renewal pruning), which involves removing older stems at the base to encourage new growth from the roots. This is different from surface trimming and is used on overgrown or declining shrubs.
For the purposes of this article, we are focused on trees, not shrubs. If you need work on your trees, use pruning terminology. If you need your hedges shaped, trimming is the right term.
How to Communicate with Your Tree Service
When you call a tree company, here is how to communicate what you need clearly:
Start with the problem, not the solution. Instead of saying “I need my tree trimmed,” say “I have dead branches in my oak tree that I need removed” or “My maple is growing over my roof and I need the branches pulled back.” Describing the problem lets the arborist recommend the right pruning approach.
Ask what type of pruning they recommend. A qualified arborist will use specific terms: crown cleaning, crown thinning, crown reduction, or crown raising. If the company cannot articulate what type of pruning they plan to do, that is a red flag.
Ask about the percentage of canopy removal. No more than 20 to 25 percent of the canopy should be removed in a single session. If the company plans to take more than that, ask why. Excessive removal stresses the tree and can trigger decline.
Ask about their pruning standards. A reputable company follows ANSI A300 pruning standards and ISA Best Management Practices. If they have never heard of these, look elsewhere.
Get it in writing. The estimate or proposal should specify the type of pruning (crown cleaning, thinning, reduction, etc.), which trees are included, and any specific goals (clear branches from the roofline, remove dead wood over the driveway, etc.). Vague descriptions like “trim trees” leave too much room for interpretation.
The Bottom Line
“Trimming” is what homeowners say. “Pruning” is what arborists do. The terminology reflects a difference in approach: trimming implies cutting for appearance, while pruning implies cutting with purpose, guided by the tree’s biology and the homeowner’s goals.
When you hire a tree pruning professional, you are paying for knowledge, not just labor. You are paying for someone who knows which branches to remove and which to keep, where to make each cut, how much canopy the tree can safely lose, and how to shape the tree for long-term health and structural integrity.
Bumblebee Tree Service provides professional tree pruning across South Jersey, following ISA and ANSI A300 standards on every job. Whether you need crown cleaning, thinning, reduction, raising, or a combination, our certified arborists will evaluate your trees and recommend the right approach.
We also provide tree removal, stump grinding, and all tree services in Washington Township, Gloucester Township, Deptford, Glassboro, Swedesboro, Cherry Hill, and the surrounding areas.
