Baltimore's expert arborists. Rooted in Baltimore County.

Baltimore's canopy carries pin oak, tulip poplar, and American sycamore over clay soil that stays compacted from a century of development, then gets soaked hard by nor'easters and summer thunderstorms. We read that combination before we ever start a saw, and we're on call around the clock when a storm gets there first.

Get An Estimate (844) 835-8733

Why Baltimore

Why Baltimore trees need a real arborist.

The Certified Arborist Tree Service works Baltimore and Baltimore County the way the ground here demands: full insurance, consistent standards, and an arborist who actually walks the site before anyone touches a chainsaw.

This is a humid subtropical to continental climate, hot summers and cold winters, sitting on clay to loam that compacts hard under decades of rowhouses, driveways, and utility work. Roots don't run deep here. They spread wide and shallow, which is exactly the setup that fails when the ground saturates.

Add spotted lanternfly working the honeylocust and maples, emerald ash borer finishing off what's left of the region's ash, and nor'easters or a remnant tropical system dumping rain for two days straight, and you get the specific failure pattern we watch for on every Baltimore property: a stressed tree, compromised roots, and a saturated-soil windthrow event waiting for the next storm to arrive.

Schedule a Baltimore site walk Call (844) 835-8733

Why Baltimore trees fail

The risks we watch in Baltimore right now.

Four problems account for most of the tree failures we get called out for in Baltimore, and we check for all of them on every visit.

Spotted Lanternfly

Feeding damage weakens honeylocust, maples, and other preferred hosts across Baltimore's street trees, leaving already stressed canopy more likely to shed limbs or fail outright.

Emerald Ash Borer

Baltimore's remaining ash trees are largely compromised or dead standing. A dead ash near a house or driveway is a removal priority, not a wait-and-see.

Bacterial Leaf Scorch

Common in mature pin oak and shade trees around older Baltimore neighborhoods; it thins the canopy gradually and weakens structural wood well before the tree looks obviously sick.

Spongy Moth

Defoliation events strip canopy across Baltimore's oaks in bad years, and a tree that loses its leaves more than once is running on reserves it may not recover.

Service area

Our Baltimore service area.

Serving Baltimore, Baltimore County, and the surrounding Mid-Atlantic communities.

Areas we cover

Click an area to learn more about our work there.

What people are saying

Rated 4.9 stars across 140+ reviews.

Real reviews from real customers, straight from our Google Business Profile. Here's what people say once the crew has packed up and the yard is clean.

★★★★★

March 11th, a brief but strong storm came through Goodlettsville and blew over two giant trees in my front yard; one which was being supported by a 3rd tree that was facing and threatening my house. It was an…

Julie Bangs●3 days ago

★★★★★

From the time I inquired w this company about removing a tree that was strongly impacted from the major strong 80 mph winds on March 3, 2023, they provided us w exceptional service in every way . They were…

Jeanne Mason●3 weeks ago

★★★★★

CATS crew was amazing across the board from Mike & Lisa & Joe to the crew that came to our house. The consultation was easy and informative and made me feel comfortable in choosing them. The price was less…

Guy Hunt●1 month ago

Read all 140+ reviews on Google

What we do

A geotagged inventory of every tree on the property: species, age, condition, and recommended work, refreshed annually.

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Trees we know

The Baltimore species list, and what we watch for.

Local soil, local weather, local pests. Each species here fails in its own way, and we plan around all of them.

London Plane

A tough street tree in Baltimore, but heavy limbs over sidewalks and parking need regular structural checks as it matures.

Callery Pear

Common in newer Baltimore developments; its narrow branch angles split easily in ice storms and heavy wet snow.

Red Maple

Handles Baltimore's clay soil better than most, but shallow roots make it a lanternfly target and vulnerable in saturated ground.

Honeylocust

A favorite host of spotted lanternfly in the Baltimore area, which stresses the canopy and shows up first as dieback in the upper crown.

Zelkova

Planted widely to replace lost elms around Baltimore; generally sound, but co-dominant stems need early pruning to avoid later splits.

Pin Oak

One of Baltimore's most common mature shade trees and a frequent host for bacterial leaf scorch, which we catch by watching for early marginal leaf browning.

Local expertise

Why an Expert Arborist Matters in Baltimore

Baltimore's older neighborhoods carry mature pin oak, London plane, and sycamore over soil that was compacted decades before anyone planted a tree there. A crew with a saw treats the tree that already failed. An arborist reads the one that's about to, by checking root flare, canopy density, and how the tree has responded to the last few seasons of lanternfly pressure and wet weather.

Every estimate here is walked by an experienced arborist, not sold over the phone. Cuts follow ANSI A300, risk work is TRAQ qualified, and you get a written plan plus a current Certificate of Insurance before anything starts.

Across Baltimore County

Towson, Glen Burnie, Columbia, and Bel Air South each carry their own version of the same clay soil and storm exposure, with their own mix of species pressure. Every community in our coverage area gets its own page covering exactly what we watch for there.

We staff Baltimore first as the flagship market, then expand into the county's surrounding towns as demand proves out, so the same standards and the same estimate process apply no matter which of these communities you're calling from.

Baltimore FAQ

Local questions, local answers.

Don't see your question? Call us. Every call is answered by a human arborist, day or night.

Do I need a permit to remove a tree in Baltimore?

It depends on your jurisdiction, the lot, and whether the tree is protected under Baltimore County or city forest conservation rules. We confirm what applies to your exact address and handle any permit or arborist report before work starts.

How fast can an arborist get to my property?

Most estimate visits in Baltimore happen within 24 hours, and storm emergencies get a crew out the same day. We answer the phone around the clock, including overnight during active weather.

Why are so many ash trees dying around Baltimore?

Emerald ash borer has moved through the region for years and has killed or compromised most untreated ash. If you still have a live ash, treatment can work, but a dead or heavily infested one near structures should come down before it becomes a hazard.

Why does my tree look fine but the roots failed in a storm?

Baltimore's clay soil holds water rather than draining it. After a nor'easter or a few days of tropical rain, the ground stays saturated long enough that even a healthy-looking tree can lose its grip and go over.

What standards do your arborists follow?

Every job runs to ANSI A300 pruning standards, and risk assessments are TRAQ qualified. An expert arborist walks every estimate in person, not a sales rep.

Are you insured?

Yes. We carry full general liability and workers' compensation on every crew working in Baltimore and can send a current Certificate of Insurance before work begins.

Take back your trees today

One expert arborist. Every tree on your property.

Free estimate. Twenty-four-hour response. No contracts. No commitments.

Or call (844) 835-8733, answered 24/7 by a human.