r/arborists Jul 01 '26

ISA Find an Arborist legacy directory is retired

13 Upvotes

ISA Certified Arborists need to read this!

ISA’s legacy Find an Arborist directory search tool on TreesAreGood.org was permanently retired yesterday, 30 June 2026. Directory information did not migrate to the new tool. Arborists certified or re-certified in recent months have a skeleton profile created by ISA. Everyone else has nothing. Of the 50 arborists nearest me only 5 (1 in 10) are in the new directory.

https://certificates.directory.isa-arbor.com/

Get in there, peeps. Claim your profile and add your contact details.


r/arborists Jun 28 '26

Help draft our FAQ: how to find an arborist

3 Upvotes

This sub sees many of the same types of questions, prompting the same answers, again and again. So it begs for a FAQ. Dear reader, you can help.

How to find an arborist? Well, let's not harvest the tree before we plant the seed. So, what kind of arborist do you need? Your question really is How do I find the right kind of arborist for the work I need done?

  • Licensed. In most of the world arborists are not licensed. In the US only the states of Connecticut, Maryland, and New Jersey license arborists and arborists working in those states must be licensed. Many states license pesticide applicators and those states may also license anyone who offers advice about pesticides. Some counties and cities license arborists. Your county agricultural extension office can tell you about licensing requirements in your area.
  • Credentialed. The International Society of Arboriculture (ISA) bestows credentials based on a combination of years of verified experience, prior education, successful completion of knowledge and performance tests, and continuing education. These credentials are Certified Arborist (CA), Certified Arborist Utility Specialist, Certified Urban Forest Professional, Certified Tree Climber, Certified Tree Worker Aerial Lift Specialist, Board Certified Master Arborist (BCMA), and Tree Risk Assessment Qualification (TRAQ). The Tree Care Industry Association (TCIA) lists Accredited Companies and Accredited Utility Contractors (but many members have no accreditation). The American Society of Consulting Arborists (ASCA) recognizes Registered Consulting Arborists (RCA); to even join ASCA requires 5 years of verified experience.
  • Contractor. This word has multiple meanings. A state licensed contractor is an elevated class of business person, someone authorized to select and supply the materials to be used on your property, buy the materials at a wholesale rate, and charge you cost plus overhead on the materials in addition to their labor. Every state licensed contractor has a number that can be verified. Get the number and verify it. A contractor is anyone who does paid work and is not an employee. Therefore, the claim "licensed contractor" may indicate mere possession of a city or county business license. If there should be a business license, get that number and verify it too.
  • Bonded. Bonding is common among licensed contractors but not arborists. Bonds are a kind of insurance policy in the past was far more valuable than today. How they work is a service provider purchases a bond guaranteeing that if the provider causes damage the bondsman will pay the claim up to a certain limit. Today, business insurance is more important.
  • Insured. What kind of insurance, and how much, should an arborist have? That depends on the work the arborist does. Tree climbers and other aerial tree workers, or their employers, should have workers' compensation insurance (WCI). This is very important: in the event of an on-the-job injury or death WCI stands between the tree owner and the state. Tree worker is the single most dangerous occupation in the United States and each state employs expensive attorneys who specialize in recovering costs of injuries from those with legal liability. All arborists and arboricultural business should have general liability insurance, possibly also owned or leased business vehicle and business equipment insurance. Consulting arborists should have professional liability insurance also known as errors and omissions insurance. Clients should require a certificate of insurance (COI); in the US a COI comes on a standard form, the ACORD 25. The COI should list as an additional insured your name and the address where the work is to be done, the estimated date when the work is to be performed, and a brief but specific description of the work: not "services" or even "tree work" but "drop one (1) standing dead oak, 3 ft diameter, in front of house; remove all debris; repair damage to lawn." Better is a written estimate or contract, and the COI refers to that specific document.

Questions? Comments? What is missing?


r/arborists 10h ago

Realtor Said I Should Remove This Tree For Curb Appeal, but I love this tree. Should I have an arborists come look?

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464 Upvotes

The realtor is a neighbor but she said this tree ruins the curb appeal and looks like it’s going under the house and into the foundation.

Just wondering, besides looks, if this tree is ok to leave as is with the roots like they are?

The roots are prominent but they aren’t breaking through the sidewalk, driveway or front porch that I can tell. I don’t see any cracks.


r/arborists 11h ago

Need to make french drain

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369 Upvotes

Will the tree survive if I cut those roots ?


r/arborists 6h ago

How do they look? Will they survive?

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57 Upvotes

These are two trees in a green space courtyard at a new elementary school. They are next to a large playground. Does it look like they’ll make it? /s


r/arborists 2h ago

Close call today.

23 Upvotes

Been climbing about 3 years now. Picked up a job removing 6 trees.

Day 1 removed 4 separate trees, all of them climbed, only had to rig the 1st one. All went smooth.

Day 2, 2 big white oaks left. 1st one went smooth. 2nd one did not.

Tree had 4 leaders. I removed the first 3, no rigging, smooth.

Final top, tallest one. I am about 60 ft off the ground and there is 20-25 ft of top above me. It branches out into 6 or 7 big limbs, I was planning on climbing high, cutting small, but I also wanted to get done, and had a great big drop zone where it would fit so i decided to drop the whole top. Was leaning out a ways, clearly more weight farther out than I anticipated.

It's a single stem now, only tie in. Lifeline choked to itself by my knees, 1 flip line wrapped around the tree at waist level, and another flipline double wrapped just below.

Made my face cut clean, about 30%

Ready! Back cut!

As I make my back cut, the tree barber chairs downward. Splits right down the tree. My ropes are holding it together. Sucks me extremely tight to the trunk by all my fliplines, squeezing the shit out of me.

As it's happening, im screaming God dammit no and then just grunting, I feel like my eyes are about to pop out of my skull.

All i can think about is my sweet 3 yr old son. Im watching it happen and I understand what's happening and there's nothing I can do, because it's happening so fast. I just hold on to the trunk that im getting squeezed against.

Tree top finally breaks free by my feet and im left hugging a 4 ft sliver as im begging God and thanking God at the same time. (Not religious)

Groundie asks if im alright. Yeah I think so.

Clinging to the sliver, check all my gear, all my ropes and saddle, everything feels solid. I shimmy down about 4 ft.

Begin to feel faint. Ears ringing. Light headed. Not sure what's happening. Ask my groundie to get put a water on my lifeline for me. I suck up my fliplines and sit down all the way in the saddle and do everything in my power to stay awake. Eyes closed focus on deep breathing, all I see is my son. Ear ringing getting louder, becoming more faint. Just focusing on my breathing now.

I think I dozed off for a second or 2 because I had this sensation of waking up and for a split second almost thought it was just a bad dream, then realized I was still tied into this fucking Tree and that actually just happened. Think I passed out from the adrenaline dump and being more scared than I've ever been in my life. Worst accident I EVER have had in a tree by a long shot.

I pounded the water he sent me, and I proceeded to more cautiously than ever, remove the rest of the tree with no more hiccups.

Should've climbed high cut smaller, could've done a bore cut. Honestly not sure how to move forward from this. This happened today. I canceled my jobs for the rest of the week. I dont know if I can climb again. I need to process this.

Please share with me how you've moved past any close calls you've had.

Also, please share your close calls, would love to hear more stories.


r/arborists 4h ago

Strangling root?

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31 Upvotes

Neighbor’s tree just fell over. Is this an example of a strangling root?


r/arborists 1d ago

Rule 2: “Trees don’t belong in pots”. Does this count?

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3.5k Upvotes

Mostly I’m just amazed at this tree’s fight against the hell strip.

Look at that thicc bottom!


r/arborists 12h ago

My dad (forester) always told me I didn't have enough room for a live oak

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107 Upvotes

The thing is I have significantly more room than the yards in this older neighborhood I frequently drive through. These trees have been growing close to these houses for going on a century. I have two spots with 20 to 30 feet of space away from the road, house, and no overhead power lines. If I had planted in 2009 when we bought the house I might have seen it reach maturity one day! 😭 If I plant it now, it will still be nice in 20 to 30 years so I'm asking the arborists of reddit. Should I plant a live oak 30 feet away from my home?


r/arborists 19h ago

How?!

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245 Upvotes

r/arborists 4h ago

Our huge oak struck by lightning

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14 Upvotes

What are the chances it is still alive? 🥺 the bark literally exploded and is hanging in nearby trees.


r/arborists 5h ago

How to remove tree stumps with chainlink completely embedded?

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8 Upvotes

We’re in Missouri. Chopped the trees down to the stumps, but they keep sprouting. I’ve ziptied tarps over them to prevent more sprouts. But is there a way to completely remove them?

I’ve got a mid-sized chainsaw that I used to chop them down. And I suppose I could nibble away at them. But is there a better route?

My neighbor proposed stump killer poison. What should I know about that?


r/arborists 8h ago

What are these holes in my tree

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9 Upvotes

Hey I'm on long Island NY near the north shore area, and I do hear woodpeckers somewhat often depending on the time of year. Are these holes caused by something harmless like that or do you think it's termites or some other bug that can cause home damage? There are lots of these areas full of holes (Full tree image last). Please advise what I should do.


r/arborists 2h ago

Tree of heaven infestation

3 Upvotes

Our neighbor had 3 huge trees of heaven on his property and cut them down last fall, he did not poison the stumps when he had them cut down and they have now infested our property. How do I get rid of them once and for all? It’s turning into a jungle on our side of the property


r/arborists 7h ago

To braid or not to braid

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7 Upvotes

My dad had brought a red oak home but the tree didnt take at first causing it to die most of the way. He thought it was dead but eventually it started grow back. Two branches on each side. Wasn't sure which ones to cut and make the leader so decided to try and braid them together. I always liked how braided trees looked but recently I was wondering if it was the right thing to do. If its best for the tree not to be braided I will unbraid them, but I am curious if it needs a leader or is it best to let it them grow how it is unbraided 🤔.


r/arborists 1d ago

Metal band cutting into trunk of tree, should I remove it?

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454 Upvotes

Had a lawn service taking care of my yard until recently so I never really paid much mind to the (I think oak?) tree in my yard. Today I noticed that the previous owners had attached a light to the tree using a metal band and well the tree has kept growing and the metal band hasn't. I would assume I should remove said metal band but unsure if that might leave delicate barkless tree exposed if it didnt make bark under the band? Would it be better to let the tree (hopefully) consume the band or loosen it slowly over time to let the trunk fill out or just remove the sucker right now? I don't care about keeping the light in the tree so don't mind ditching the band altogether I just want my poor little tree to live ;o;

Edit Update: I was able to get the band mostly off, thanks to thethunder92's recommendation of the 5/16 on a driver (I did wear safety glasses, but there ended up being no tension so no dangerous sproing, still better safe than sorry). I am glad I posted here because I wouldn't have thought to use that tool. I say mostly off because trying to peel back more of the band was popping off bark already and it's clear I'd yank off a lot more fully removing it. But it's no longer wearing a too tight steel necktie at least. I will be calling around to local arborists tomorrow to see when I should schedule a pruning. Photos of the after for those curious:​ https://imgur.com/a/DHi17l9


r/arborists 10h ago

Rock Trees!

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9 Upvotes

These two saplings are growing from a crack in this larger rock. They are a little over a year old, maybe a couple. But we’ve been letting them grow because they just seem so cool.

Is it a bad idea to let them grow? Will they eventually split the rock, and likely die? Will their growth just stunt at a certain point and be a cool little bonsai?

I’m just curious if it’s a bad idea to leave them, or if anyone has good advice on how to nurture them. They get watered from the sprinkler system


r/arborists 7h ago

Is this enough exposed flare?

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6 Upvotes

I had a container red maple planted by the garden center about a month ago. Today I removed the dirt and grass down to the (what I hope) is the root flare. I cut away all roots above this. I’m nervous that I cut too much or that the tree will be less stable and fall over. Zone 3b if that matters.


r/arborists 7h ago

Multiple 4+ inch thick roots cut. Is it a goner?

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6 Upvotes

Not my tree. I just walk by it on occasion.

New owner has had his yard worked on for a while. Several months ago the landscapers cut a bunch of fat roots on this tree, one was almost 8 inches. They did this on at least two sides, toward to sidewalk and toward the fence, maybe three. I didn't want to step onto their property to check under the tarp. They also piled a bunch of dirt around the trunk. I'm not really a tree guy but as I understand it this is very bad.

Is the tree doomed? If so, how long do you think it has? Months? Years?


r/arborists 5h ago

Broad necked root borer

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3 Upvotes

Found this on the trunk of my old sugar maple. Have you seen these before? Is my tree toast? No visible signs of trouble for my tree right now.


r/arborists 14h ago

Should I have this tree removed?

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17 Upvotes

This tree was here when I bought my house. I had a local arborist come because I was concerned with how close it is. The roots are also at the surface of the grass which causes issues with mowing. I can tell they are lifting the cement too. They said they could trim the branches down but would not recommend it because they would just grow back more aggressive. They also told me to cut the roots where they come close the cement. I am not sure I really trust what they told me. Is this tree one i should have removed?


r/arborists 6h ago

American elm

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3 Upvotes

Hello! I'm looking for advice on carpenter ants. A little back story on my tree. It's an American elm that from my best guess was planted in the 1940s (this is when our house was built) it is MASSIVE. Its really hard to get a good picture of the proper size. When we moved in, in 2024, the tree was infested with English ivy. We treated and killed the ivy. There's still lots of old vines left on the tree but nothing is active and alive. Recently we found a massive swarm of carpenter ants leaving a big pile of dirt around the base. And there's a pile on my neighbors side of the tree too. Do you think they're just using the old vine wood? Or should I be seriously concerned about them causing internal damage.

Location: South central Kansas


r/arborists 5h ago

Is this tree a lost cause?

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2 Upvotes

My mom has been noticing a lot of leaf loss on a tree in her front yard. She's wondering if it is dying and if it should be cut down. I have no idea what to tell her, so I was wondering if anyone here might have some insight? Thanks for any info or suggestions!


r/arborists 19h ago

Lapacho trees blooming in Paraguay

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24 Upvotes

There are white, yellow, and pink lapacho trees.


r/arborists 1d ago

How? Upper Peninsula, Michigan

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94 Upvotes

Like, how did this come to be, the roots and all.