An arborist is trained in the science of tree care, not just the labor of it. That training covers how trees grow, how they respond to injury and disease, how their root systems interact with soil and nearby structures, and how to judge whether a tree is stable or a hazard waiting to happen.
A certified arborist brings that knowledge to real decisions on your property. They diagnose what is actually wrong with a struggling tree instead of guessing. They assess whether a leaning trunk or a cracked limb poses real risk to your house, your driveway, or the people who walk under it. They recommend the right course of action, whether that is targeted pruning, soil treatment, cabling, or removal, based on the tree’s actual condition rather than a one-size-fits-all approach.
This is different from the work a general tree crew handles day to day. A crew can trim branches, take down a tree, or grind a stump efficiently and safely. An arborist is the one who determines what needs to happen and why before any cutting starts, particularly when the situation is not straightforward.
The International Society of Arboriculture, or ISA, sets the standard credential in this industry. Earning ISA certification requires passing an exam covering tree biology, diagnosis, risk assessment, and proper care techniques, along with ongoing continuing education to keep the credential current year after year.
That certification is a meaningful filter, not a formality. It separates someone who has studied arboriculture as a formal discipline from someone who has picked up tree cutting on the job. Meyer Tree Service has three ISA Certified Arborists on staff, each holding an individual certification number tied to continuing education requirements. Brad Meyer, Doug Beckmann, and Teresa Hessel each carry that credential, along with affiliations with the TCIA, the American Society of Consulting Arborists, and the St. Louis Arborist Association. You can see the full list of certifications and accreditations our team holds.
Every arborist can perform tree service work, but not every tree service employs an arborist. That distinction becomes important the moment a job involves more than routine trimming or removal.
A tree crew without arborist training can still safely take down a dead tree or clean up storm debris. What they typically cannot do is tell you why a tree is declining, whether a structural crack is stable or progressing, or how construction near the root zone will affect a tree’s long-term survival. Those questions require diagnostic training, not just equipment and years of cutting experience.
If you are comparing companies for an upcoming project, it helps to know what to look for when hiring a tree company in St. Louis, including whether the crew includes a certified arborist or only cutting labor.
Not sure whether your situation calls for a routine trim or an arborist’s assessment? Our certified team can walk your property and tell you exactly what your trees need.
Most routine tree work, seasonal pruning, stump grinding, and straightforward removals, does not require an arborist’s diagnostic expertise. Several situations do.
Diagnosing a sick or declining tree. If a tree is losing leaves out of season, showing dieback in the canopy, or developing fungal growth at the base, the cause is not always obvious. An arborist can identify whether the problem is disease, pest damage, root stress, or something reversible before you decide to remove a tree that might have been saved.
Assessing risk around your home. A leaning trunk, a large dead limb over a roofline, or visible cracking near the base all raise the same question: how much danger does this actually present? A tree risk assessment from a certified arborist gives you a professional read on whether a tree needs immediate attention, ongoing monitoring, or is fine as it stands.
Preserving high-value or mature trees. Older trees, especially large oaks and other long-established species common in neighborhoods like Clayton and Ladue, represent decades of growth that cannot be replaced quickly. When one of these trees is struggling, the goal shifts from removal to preservation, and that calls for an arborist’s judgment on which interventions will actually help.
Planning around construction. Digging, grading, and heavy equipment operating near a tree’s root zone can cause damage that does not show up for years. Bringing in an arborist for a construction consultation before work begins protects trees that would otherwise be compromised without anyone realizing it until it is too late to fix.
Evaluating trees before they become emergencies. Waiting until a storm brings a limb down on your roof is the most expensive way to find out a tree needed attention. A periodic arborist evaluation catches structural problems while there is still time to address them with pruning or cabling instead of removal.
Hiring an arborist rather than a general tree crew changes the kind of decision you get. Instead of a quote based on what a crew sees standing in your yard for ten minutes, you get an assessment grounded in tree biology and years of training focused specifically on catching problems before they become costly.
That expertise protects two things at once: the tree itself, when it can reasonably be saved, and your property, when it cannot. A certified arborist will tell you plainly when a tree is beyond saving instead of running up hours on treatments that will not work, and will also tell you when a tree everyone assumed needed to come down actually has years of healthy life left.
For homeowners weighing a tree’s future, whether that means diagnosing a problem, assessing risk near a structure, or protecting a mature tree through nearby construction, working with certified arborists rather than a standard cutting crew is the difference between an informed decision and a guess.
Our team includes ISA Certified Arborists ready to assess what your trees actually need, not just what a crew can cut down.
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