When your trees need care, who do you call: a landscaper, a gardener, or a tree trimmer? While all these people play important roles, none are trained, tested, and certified specifically in tree health and safety. Only the arborist satisfies these requirements.
Arborists are to trees what veterinarians are to pets. We are highly trained professionals who diagnose, treat, and preserve living things that can’t speak for themselves. If you’ve ever wondered what makes an arborist different (or mayhap you’ve thought, “do I need to hire an arborist?”) then this guide is for you.
An Arborist Is a Tree Care Specialist
Simply put, an arborist is a professional who is trained in the art and science of planting, caring for, and maintaining trees. The International Society of Arboriculture (ISA) defines arborists as individuals who are “trained in the science and art of caring for and maintaining trees.”
That training includes everything from tree biology and soil science to safety, disease diagnosis, and structural analysis. It’s a mix of hands-on skill and deep ecological understanding. Every decision made about a tree has long-term consequences for property, safety, and the environment.
For a clear overview from the ISA, see: Why hire an arborist.
Certification Matters
Not everyone with a chainsaw is an arborist. In fact, arboriculture is a regulated profession with internationally recognized standards.
ISA Certified Arborists must:
- Pass rigorous written and practical exams.
- Maintain certification through continuing education.
- Adhere to safety and ethical guidelines.
- Demonstrate extensive field experience before certification.
At Pacific Arboriculture, we go even further. Every project we take on is overseen by a Certified Arborist—not just during the assessment, but on the jobsite itself. That means your property benefits from real-time professional oversight and safety compliance from start to finish.
Learn more about our credentials and professional team.
What Does an Arborist Actually Do?
Arborists do much more than cut down trees. In fact, this is often seen as a last resort. Arborists handle every stage of a tree’s life cycle, offering services that combine biology, safety, and practical management.
Common arborist responsibilities include:
Tree Health Evaluations – Checking for pests, disease, and environmental stress.
Pruning and Structural Care – Removing deadwood, improving strength, and enhancing appearance.
Risk Assessments – Evaluating tree stability near structures, utilities, or public areas.
Tree Preservation Plans – Developing strategies to protect mature trees during development or construction.
Plant Health Care (PHC) – Improving soil conditions, managing pests, and promoting healthy growth.
Emergency Response – Safely handling storm-damaged or fallen trees.
See how we apply these skills every day!
Arborists vs. “Tree Trimmers”: What’s the Difference?
It’s a common mistake to assume that anyone offering tree work is an arborist, but there’s a big difference between a tree trimmer and a certified arborist.
Tree Trimmers Often:
- Focus only on removing or cutting limbs, not on the long-term health of the tree.
- Lack formal training, certification, or proper insurance.
- Take a one-time, low-cost approach to jobs.
- May unintentionally harm trees through improper pruning techniques.
- Jump straight to tree removal, even if it isn’t necessary.
Certified Arborists Always:
- Prioritize overall tree health, structure, and safety.
- Have professional training and ISA certification, plus insurance coverage.
- Follow ANSI A300 pruning standards to ensure proper, healthy cuts.
- Provide long-term guidance and care, not just a quick fix.
- Try to save the tree, if the property owner doesn’t want to have it removed.
Hiring a low-cost contractor might seem convenient, but it can lead to damage, safety hazards, and even code violations. Working with a certified arborist ensures that your trees, and property, receive the care and protection they deserve.
Why Hire an Arborist from Pacific Arboriculture?
Puget Sound’s diverse landscapes—from coastal evergreens to urban maples—demand specialized care. Our arborists combine technical expertise with local knowledge of soil, weather, and species-specific needs.
Here’s what sets us apart:
- ISA Certified Arborists & Tree Risk Assessors on every project.
- WSDA-licensed Plant Health Care Applicators for pest and disease management.
- NCCCO Crane-Certified Operators for large or hazardous removals.
- Licensed, bonded, and insured, protecting you and your property.
- 300+ five-star reviews from clients across South King and Pierce Counties.
We’re more than a service; we’re a team that values the trees, people, and places that make the Pacific Northwest unique.
When Should You Call an Arborist?
If you’re unsure whether a tree needs attention, that’s reason enough to call. A short consultation can reveal issues early, saving you time, money, and stress.
You should contact an arborist if:
- You see large dead branches or cracked limbs.
- A tree is leaning, hollow, or showing signs of rot.
- Roots are lifting soil or damaging pavement.
- You’re planning construction or landscaping near mature trees.
- You need documentation for insurance or a city permit.
Arborists Protect More Than Trees
Arborists maintain trees, yes, but they do so much more. Arborists protect property value, prevent accidents, and preserve the local environment. When you hire a certified arborist, you’re investing in safety, longevity, and the health of your landscape.
At Pacific Arboriculture, our motto says it all: We are all your trees need!
