What is the difference between tree trimming and tree pruning?

Nothing, for our purposes — we use both words for the same work. Pruning is the word that shows up on an arborist's work spec; trimming is the word most people reach for. The word is not what decides whether the job was any good. The specification is: which limbs come off, which stay, and why.

When is the best time to prune trees in Austin?

There are not many timing constraints here. Our seasons run together, so a pruning cut does not produce the bleeding wounds you would get in a colder climate — American elm being the exception, which bleeds whenever you cut it. The real timing question in Central Texas is oaks and oak wilt. We honor that spring window by default and hold the line firmly in neighborhoods with a history of it, picking the work back up in July — and we will tell you when there is a good enough reason not to wait.

How often do trees need to be pruned?

It depends on the tree and on what you are pruning for, and there is no interval that fits every tree. Clearance work comes back on the schedule your driveway and your roofline set. Deadwood accumulates faster on a stressed tree than a healthy one. Young trees are the one case with a real rhythm to it — roughly every two to three years, two to five sessions, until the tree has a good central leader, and then you stop.

Will pruning hurt my tree?

Every cut is a wound, and every wound is a door for decay — that is the cost side of the ledger, and it is why a good arborist takes several small limbs rather than one large one where that gets the same result. Done for a real reason and specified properly, pruning is worth that cost. Done badly it is not, and on an over-pruned native live oak the damage splits two ways: vigor comes back in five to seven years with soil and water work; form never does.

Can I prune my own trees?

Some of it. Keith's own writing tells a homeowner doing the pruning themselves to avoid the March-through-May window, and to work when the canopy is leafed out rather than bare, because that is when it is easy to tell a dead limb from a dormant one. Where it stops being a homeowner job is the deciding cuts — which leader a young tree keeps, which heavy laterals come back on an elm or a pecan, anything that needs a climber or a lift. Those are the cuts you cannot take back.

Do I need a permit to trim a tree in Austin?

Tree ordinances vary from one Central Texas jurisdiction to the next, so it depends on your address and your tree. Check it against our jurisdiction finder, which carries the ordinance detail and the permit contacts. If your property is an active construction site, pruning is part of the tree protection work for the project, and that is its own conversation.

Austin Tree Trimming & Pruning

Tree trimming in Austin is mostly cosmetic, and we will say so on our own pruning page. You prune for your reasons — clearance over the driveway, the look of the yard, a dead limb you would rather not have hanging over the patio — not because the tree asked you to. The pruning that genuinely changes a tree’s future is a much shorter list.

Everything below is the rest of that answer: what is on the short list, what we will not cut and why, and what you are actually paying for when you hire this out.

What pruning is for, and what it costs the tree

Keith’s position, from a company that sells pruning:

The role of tree pruning in maintenance, frankly, is mostly cosmetic.

That is not an argument against pruning. It is an argument for being honest about who the work is for. Three reasons hold up:

Clearance and usability — limbs off the house, up over the driveway, out of the street. This is not tree health at all, and it does not have to be.
Hazard removal — taking out large dead limbs before they come down on something.
Structural work — reduction pruning on the species that break, and structural pruning on young trees. This is the part that is genuinely for the tree.

The cost side is worth understanding before you buy any of it. Keith’s analogy for tree health is cholesterol: people manage cholesterol to get a long life, and with a tree what you are managing is decay. There are wood-eating organisms working to turn that wood back into soil, and the tree spends its life holding them off. Every cut is a wound, and every wound is a door. That is why the functional decisions — which limb comes off, how much root disturbance is acceptable, what a build can do near a tree — all bend around decay.

The practical version of that is a rule out of his own writing: always avoid removing a large limb when you can accomplish the same goal by removing several smaller ones. Big cuts take years to close, and the tree pays for them long after the crew leaves.

You cannot beat tree pruning with equipment

Tree removal is won with machinery. Pruning is not, and Keith drew the contrast himself:

With tree removals, equipment is a big part of it. And the CDL drivers and DOT program that we have goes with that. Tree pruning is very different. You can’t beat tree pruning with equipment, although our aerial lifts, the bucket truck and the spider lift, are very helpful in many circumstances. The real win here for us is the culture. I got my first job as a tree guy when I was sixteen. I started climbing when I was eighteen. Tree pruning is in my veins. I have built the culture and the company where really everybody’s a climber. Everybody knows what they’re doing.

We own aerial lifts and they earn their keep on the properties that need them. They are not the argument. A machine gets a person to the limb; it has no opinion about which limb.

And here is the part a marketing page would delete. Asked where that culture actually shows up, Keith started by giving away the easy work:

Some simple tasks like cutting dead branches out of a tree. I don’t know that we really win against an average company or a lesser company.

He then bounded it himself, unprompted, the moment it was read back to him as something we would publish:

While I don’t necessarily win at deadwood versus lesser educated or experienced or trained companies, I also don’t lose. We are still very competitive.

Read that as parity, because that is what it says. Straightforward deadwooding is not where our edge shows up — and it is not where we fall behind, either. The edge appears where there are real judgment calls to make, and those are worth naming specifically.

We run two- and three-person crews, each with a slightly different area of expertise.

How we train our crews is the evidence behind “everybody’s a climber.” It is not a service we sell; it is why the assertion is checkable.

Pruning is one of our top three services, which is the plain reason this page is specific rather than general.

Where the judgment actually shows

Keith’s own three examples, in his order:

Reduction pruning on large elms and pecans. These are the species that fail — pecans, ashes, elms. Notorious for dropping limbs in a windstorm, and a pecan sometimes does not even need the storm: a wet spring and a good load of pecans and it will self-prune on its own. Shortening long, overextended limbs takes weight and wind-sail off those laterals without stripping the tree.
Structural pruning on young trees to develop a central leader.
Know-how. In his words, “in the know-how category, we really shine.”

Note the word we use for #1: reduction pruning, not “thinning.” Homeowners and inexperienced pros both hear “thinning” as stripping out the interior and lower limbs, which is a different job and a bad one. The goal is to shorten the long limbs, not to hollow out the tree.

The work spec is species-specific — the diagnosis is not

There is no five-point checklist that tells you whether a pruning job was done right. Keith refuses that framing on purpose: “Every tree is a new situation.” What he will give you is the correct specification, tree by tree:

Tree	What the spec should say
Native escarpment live oak, sound	Deadwood and clearance only. No reduction pruning, and no canopy thinning. Raising the canopy for clearance is fine.
Coastal live oak with structural defects	A different tree with a different answer. Some proper reduction pruning is correct here, as part of a long-term structural plan — not malpractice.
Cedar elm, most elms, pecan, ash	Reduction pruning on heavy lateral limbs is legitimate — but the interior canopy stays.
Very young trees	Structural pruning, including subordinating a codominant leader, carefully evaluated.

The two live oaks are the reason we are pedantic about names on this site. They are both called “live oak,” they take opposite specs, and a bid that gets them backwards has already gone wrong before anyone climbs anything.

This is a bid-stage decision, which is where your money either works or does not. If a bid on a sound native live oak says “thin the canopy,” you have your answer, and you have it before the saw comes out.

The blue-sky test — check the work from the ground

You do not need vocabulary or tools for this one:

If you’re standing under the tree looking up, how much blue sky do you see through the tree? On a healthy oak you should see very little if any blue sky. And you should see some interior growth — suckers [epicormic shoots] or small branches growing off of the main scaffold and larger branches in the interior canopy.

Two conditions come with it and they are not footnotes: growing season, and a mature tree. A bare deciduous canopy in January is all sky, and a young tree has not built an interior canopy yet — a properly structure-pruned young tree is supposed to look open. Run this test in either of those situations and you will scare yourself for nothing.

What it is looking for is the damage that does not undo. Keith on the worst case he sees:

To me, the worst case scenario on those are overpruned native live oaks. Native live oaks are a couple hundred years old. And when you over-thin them and scalp them, they just don’t recover and turn back into the trees that they were. There’s literally nothing that you can do. There’s no amount of money you can spend. Trees don’t die overnight, but they just never have the beauty that they did before.

Note what he does not claim: the tree does not die. Vigor comes back over five to seven years with soil and water work — mulch, compost, feeding, an irrigation audit. Form does not come back. And the thing worth knowing if it has already happened to your tree: the solution is not to prune more. If you want the full version of that on young trees, we wrote it up in structural pruning for young trees; on crepe myrtles, the short answer is don’t top them.

Oaks, timing, and the pruning window in Central Texas

There are fewer timing constraints here than the internet will tell you. Our seasons run together, so pruning cuts do not produce the bleeding wounds you would get in a colder climate with a long dormant season and hard spring sap flows — American elm is the exception, and it will bleed whenever you cut it. Rules imported from the northeast do not transfer to Austin.

The real timing question is oaks. We honor the spring window by default, and in neighborhoods with a history of oak wilt we hold the line firmly — and Keith is straight about why: he does not want neighbors driving down the street pointing fingers at him or his client. Those customers get encouraged to wait until July, when the window reopens.

Pruning inside the window is still necessary and appropriate when there is a genuine reason: a real safety hazard, limbs rubbing on the roof, limbs hanging low enough that the garbage truck smacks them and opens a fresh wound every time it drives by. A tree already being wounded on that schedule is not being protected by waiting.

We paint wounds on oak-wilt-susceptible trees, and we will tell you what we think of it. Keith’s own read is that wound dressings are bad for trees — not sometimes, every time — and he points at Alex Shigo’s long-term research for it. In his words:

I don’t like painting wounds, but we do it on oak-wilt-susceptible trees because there is currently a public rule that says we should. And maybe I’m wrong.

Cleaning tools between trees is a different matter. That is real hygiene, not theater, and it gets done.

Hedge and screen pruning maintenance

Once a hedge or a privacy screen is established, its height and its shape have already been decided. The work from there is holding it where you put it, and that is ongoing rather than a one-time job. It is work we take on: we do hedge pruning maintenance on established hedges and screens.

Pruning around a build

If your property is an active construction site, pruning is not a standalone decision — it is part of the tree protection work for the project, alongside fencing the root zone and mulching it, and the ordinance compliance that goes with them. Limiting pruning is itself part of the preservation approach there. That work lives on construction site services. For what your jurisdiction requires, check your address against the jurisdiction finder — thresholds and rules differ from one Central Texas municipality to the next.

What you get when we bid a pruning job

An arborist comes out and walks the property. What comes back is two documents, not a number on a card: a written site inspection and work plan — the description of the work, photos of the trees, which parts of the property we are working and which trees we are not touching, the crew and equipment it takes, and the obstacles like traffic control, ground protection, whether a permit is needed, and landscaping or pavers at risk — and then the priced proposal. Both come to you.

The work plan is where the specification lives, and the specification is the product. Species, condition, location and what you are trying to accomplish all move it, which is why our crews are not working from “trim the tree.” Our crews work to the ANSI A300 and ANSI Z133 standards, and the consulting side is led by an ISA Board Certified Master Arborist (#TX-0985B).

Where the answer is not readable from the ground — a tree you are unsure about, a structural question, a decision you cannot take back — an arborist consultation is the smart step first. Measure twice, cut once.

Estimates are free. Call (512) 996-9100 or request one online, and tell us what is bothering you about the tree — clearance, a limb you do not like the look of, or just that it has not been touched in ten years.

We prune trees across Austin and the surrounding Central Texas metro — Westlake, Rollingwood, Bee Cave, Lakeway, Round Rock, Cedar Park, Pflugerville, Georgetown, Dripping Springs, Buda and Kyle.

Talk to an arborist

Request an estimate (512) 996-9100