Milwaukee's expert arborists. Storm ready for Lake Michigan winters.

From removals to structural pruning to 2 a.m. storm response, we keep Milwaukee County's trees standing through heavy snow loads, spring derechos, and the ash borer wave working through the county's boulevard trees. Expert arborists, on call around the clock.

Get An Estimate (844) 835-8733

Why Milwaukee

Why Milwaukee trees need a real arborist.

The Certified Arborist Tree Service brings expert arborists, consistent standards, and full insurance to every job in Milwaukee County, whether it is a single removal off a Bay View bungalow lot or a citywide storm cleanup.

Milwaukee's trees carry the weight of a full Great Lakes winter, heavy snow, freeze thaw cycles, and ice loading, on soil that runs from workable loam near the river to heavy clay that holds water long after spring melt. That combination stresses root systems and makes deadwood heavier than it looks.

Knowing which species are already compromised by emerald ash borer or oak wilt, and which ones are simply carrying too much ice, is the difference between a tree that gets pruned back to health and one that comes down on a garage during the next derecho.

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

Why Milwaukee trees fail

The risks we watch in Milwaukee right now.

When a tree fails here, the cause is usually one of a few problems we check on every Milwaukee site visit.

Emerald Ash Borer

Milwaukee lost thousands of boulevard ash trees to this borer, and standing dead ash is still the most common reason we get called for an emergency removal in the older east side and south side blocks.

Oak Wilt

Milwaukee's mature red and bur oaks are vulnerable through root grafts and beetle transmission; we time any oak pruning outside the spring risk window and check neighboring oaks once one is confirmed.

Snow and Ice Load Breakage

A wet, heavy Great Lakes snowfall on a poorly structured maple or linden canopy is a routine cause of limb failure here every winter, especially on trees that were never structurally pruned.

Derecho and Summer Windthrow

Fast moving summer thunderstorm lines push straight line winds through the county with little warning, and shallow rooted trees on saturated clay go over first.

Service area

Our Milwaukee service area.

Serving Milwaukee County and the surrounding 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 Milwaukee 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.

Freeman Maple

A fast growing street tree favorite around Milwaukee, but that speed comes with weaker wood that splits under heavy snow load if it was never structurally pruned young.

Littleleaf Linden

Common along Milwaukee boulevards for its shade and shape, though its dense canopy catches wind and ice more than an open grown tree, raising limb failure risk in derechos.

Honeylocust

A popular replacement for lost ash trees in the city, generally resilient, but still needs early structural pruning to avoid the codominant stems that fail in ice storms.

Hackberry

Tough and adaptable to Milwaukee's clay soils, hackberry mostly needs monitoring for witches broom and deadwood after wind events rather than disease treatment.

Norway Maple

Widely planted decades ago in Milwaukee's older neighborhoods, it now shows the shallow, girdling root patterns that make mature specimens a windthrow risk in saturated clay.

Sugar Maple

A native performer in Milwaukee's remaining woodlots, sugar maple handles the cold winters well but suffers when construction or drought compacts the loam it needs.

Local expertise

Why an Expert Arborist Matters in Milwaukee

Milwaukee grows demanding trees on demanding ground, decades of ash loss, oak stands vulnerable to wilt, and clay soil that turns saturated every spring. A crew with a chainsaw treats the tree that already failed; an arborist reads the one about to.

Every estimate here is walked by an experienced arborist who knows how a Lake Michigan winter loads a canopy differently than it would inland. Cuts follow ANSI A300, risk assessments are TRAQ qualified, and you get a plan plus a current Certificate of Insurance before work begins.

Across Milwaukee County

From West Bend and Cedarburg's older growth lots to West Allis and Greenfield's dense residential blocks, Milwaukee County's tree canopy varies more than the skyline suggests.

Every community in our coverage list has its own page covering the species, soil, and storm exposure we plan around there.

Milwaukee 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 Milwaukee?

It depends on the property, the lot, and whether the tree sits in the public right of way along a Milwaukee boulevard. We confirm what your exact address requires and handle any permit or arborist report needed before work begins.

How fast can an arborist get to my property?

Most estimate visits happen within 24 hours, and storm emergencies after a Milwaukee derecho or heavy snow event get a crew on site the same day. We answer the phone around the clock.

Is emerald ash borer still a problem in Milwaukee?

Yes. Ash mortality from the borer remains one of the top reasons we get emergency removal calls across Milwaukee County, especially on older street ash that was never treated early.

What standards do your arborists follow?

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

Why do trees come down here even without a big storm?

Milwaukee's heavy clay soils hold water after snowmelt and spring rain, which weakens root anchorage. A tree that looks fine can go over in an ordinary summer thunderstorm if its roots were already compromised.

Are you insured?

Yes. We carry full general liability and workers' compensation on every Milwaukee crew and can email 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.