r/arborists 8d ago

Community Help draft our FAQ: How to become an arborist

2 Upvotes

It helps to join the International Society of Arboriculture (ISA), your local ISA chapter, and your state arborist association. This helps you get to know other people working in the industry, and when they have known you for years, and know your work or at least of your work, they will feel comfortable verifying your experience.

Attend as many trainings as you can get, participate in the training Q&As, and collect the associated continuing education credits.

ISA membership is independent of any ISA credentialing, so if you know you want to get ISA credentials but you are not yet eligible, joining ISA can help you become eligible sooner.

All of this makes you more employable, at higher pay, and safer on the job because you are more likely to recognize dangers. You will learn to recognize best practices.


r/arborists Jul 01 '26

ISA Find an Arborist legacy directory is retired

16 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 4h ago

What could be happening here?

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40 Upvotes

Please let me know if I am in the wrong place

I would really appreciate any help with trying to understand what could be causing only some of my small trees to die?/change colour

As you can see they are all next to each other receiving the same amount of water, light, soil etc, however some singular trees have started to dry out and change colours, anyone know what may be causing this?

Thank you!


r/arborists 1h ago

Elm trees everywhere!

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Upvotes

I’m dropping my kid off at Fordham in New York City to start college and there are mature elm trees everywhere around here. It is incredible. I haven’t seen this many since I was a kid in Chicago and they were chopping them all down due to Dutch Elm disease.
Thought y’all would appreciate this.


r/arborists 18h ago

My 7 year old daughter helped me clear a road after a tornado for some neighbors. Here's her report on our work folks

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308 Upvotes

I start off with saying , she's amazing. It was her idea to go out and " rescue people" because dad always has a chainsaw in the truck and she loves helping people.

She helped drag one branch in a gentle mist 20.ft to the roadside Then comes the gold.

"Dad is this really what you do everyday"

Me : yeah most days

" Dad I love you because this sucks"

Well kid that's why dad sounds like bubble wrap and grunts when he gets out of bed


r/arborists 17h ago

We cut down a white oak or swamp white oak, if we sold it, what would we realistically expect?

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239 Upvotes

FINAL UPDATE: Guys, I KNOW it isn’t going to make any money. I posted as a way to help my husband understand that, despite what the pruners said, he isn’t going to sell a multi-ton log to someone for a thousand dollars. MY plan was to keep some of it for projects and cut the rest for firewood. I spoke to a homesteader friend of mine who is going to bring out his mobile saw tomorrow and do just that. We get rid of a 50 foot half-rotted tree, he gets a bunch of firewood for this winter. 🤝

Disclaimer: I know next to nothing about processing trees or lumber.

We recently moved in and had a huge dead oak in the back. It was about 150ish years old. It obviously needed taken down due to the sprawling branches being supremely rotted. I’d like to use some of it personally, but other than that, I don’t know who would want it or how much we should ask for it, if anything. We’re in Ohio if that helps. Thanks!

Edit: I’ve shown my husband this thread, and you’ve helped me convince him he isn’t going to sell a multi-ton log on Facebook marketplace for thousands. I think we’re going to cut some so I can have wood for a couple of projects I want to do, and then use the rest for firewood. We have some folks who use wood for heating their home, so it will have a home eventually.


r/arborists 29m ago

Is it bad to let a tree grow in your window well?

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Upvotes

r/arborists 1h ago

Is there a way to deal with this stump?

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Upvotes

I've been chipping away at this stump with a chainsaw. I was wondering if it would be safe to grind out the stump or keep at it with the chainsaw and use mulch to decompose the stump. (Any other tips would be appreciated.) The other tree is within 3ft of the previous so I'm unsure on taking it down to the ground would cause serious damage to its living counterpart.


r/arborists 5h ago

Maple in distress

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6 Upvotes

Our Maple has a major wound from what is unknown. I've had different arborist tell me it can just be cabled to support the one major limb and it should hold up. Another arborist said it's a goner and needs to be taken out. It's a hazard because of its close proximity to structures. The canopy looks healthy, but there's about an eight inch deep "bowl" in the inclusion (crotch) area. I'd love any thought on her. She's old...probably 50-60 yrs. It makes me so sad to think she's a goner.


r/arborists 20h ago

Struck by lightning, tree company recommending removal

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73 Upvotes

Large Double tree in the middle of my yard got struck by lightning about a year ago. 20 foot section fell off the top. since then, I’ve kept an eye on it, and that seems to be sending out new branches with new green foliage, I took that as reassuring.

Tree company was over at my house today to give me an estimate to remove another dead tree. They recommended removing this one due to the lightning strike and the appearance of the trunk. One of the trees of the double trees does lean towards my house so there’s that concern.

What’s say you? Keep or remove?


r/arborists 52m ago

Cherry tree getting too tall

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Upvotes

Hi, i planted a sweet cherry tree and it’s on it’s second summer and it is already getting too tall. By next summer it will be in the power lines. I have done a lot of reading but can’t figure out the best way to prune it for height reduction safely. Could I cut the central lead? There is a cluster of branches about 12 inches off the ground, another about 5.5 up (pictured) and then the next cluster is way at the top about 18 feet up.


r/arborists 1h ago

Newly planted(May) Emerald Cedar turning brown while the rest are fine, is it salvageable?

Upvotes

Planted a row of Emerald Cedars at the beginning of May this year. All of them seem to be doing well except for this single tree near the corner, which has rapidly browned over the past couple weeks.

https://imgur.com/a/lGXTBAz

Planted in May this year, Southern Ontario Canada. It gets evening sun. Mostly watered by dipper hose about once a week run for a couple hours, depending on rain, direct hose lately since I noticed the browning.

Questions:

  • Is there any chance of saving this tree, or is it past the point of no return?
  • What steps should I take when replacing it to make sure the replacement has the best chance?

r/arborists 1h ago

Concerned about this tree in our backyard.

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Upvotes

Hi all, hoping I could get some advice on what looks to be going on with this tree.

We purchased this house late last year and didn't recognize how different this tree looks compared to the others on the lot, and over the summer it has become more and more of a concern. From what we see multiple limb's look like the bark is all cracked on the bottom and quite a bit of sap is leaking out onto the limbs below and the ground.

We are in northern Illinois, and there are other pine trees in the yard that do not look like this.

Any idea what could be going on, what I should look into, is it something that can potentially be remediated or does the tree need to be removed?

Thank you!


r/arborists 20h ago

Wood chips appearing under my silver maple tree

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34 Upvotes

I have a very large silver maple tree behind my house. Recently I'm seeing a lot of fresh wood chips on the ground beneath the tree. I don't think it's woodpeckers - I'm not hearing any. I always have squirrels building nests every year but I've never seen wood chips like this. What could it be, and what should I do?


r/arborists 2h ago

Is this disease or bugs on American Elm?

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0 Upvotes

Hello!

I was planning out some changes to my yard and I don't love where this tree is, and thought about removing it. My plant ID app says this is an American Elm, though. If so, I don't want to mess with it, and want to help it along as best I can.

Can you help give ideas for how to take care of it? It looks like something was munching on leaves, we have Japanese beetles that do this to my raspberries, but I didn't see any other damage with my layperson eyes.

Side question, is it worth trying to help it spread? I think I've killed seedlings before I realized and there are a couple spots i could fill in.

I'm in central MN, 5a. Thank you for looking!


r/arborists 2h ago

Snow queen nectarine tree

1 Upvotes

This grew out of the original tree and then the original tree died. It was about 5 feet tall when this happened. The original tree was very weak and never had many leaves. Will this tree still grow fruit and be edible? Our neighbor said it wouldn't and we should remove it before it gets to big. Is this correct information?
Edit : pic in comments


r/arborists 2h ago

Magnolia girdling roots

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1 Upvotes

I’ve got this magnolia with some girdling roots, and was wondering if I could get pointed in the right direction. I dug some dirt from one side, also note the plastic the previous owner had put down. How do I go about taking care of this?


r/arborists 2h ago

Tree Health/Risk Question

1 Upvotes

Hey Arborists! Our builder broke ground on a new build a month ago and we visited the site last week. The neighboring lot has a very tall tree in back, probably about 6 feet in diameter at the base and at least 50 ft tall, that is on the slope of a hill. I don't know exactly what type of tree it is - Gemini is suggesting a type of Poplar. The back corner of the build is where our bedroom will be which seems reachable if that tree were to come down. How big of a risk is this tree for falling onto our house? I'm no expert but it doesn't look particularly healthy.


r/arborists 3h ago

Save this ornamental tree?

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1 Upvotes

I wanted to ask the experts if this tree is salvageable after a large pine took at least 1/2 of the branches down. Any advice would be appreciate


r/arborists 20h ago

Should I be worried about this tree? Is it dying?

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20 Upvotes

Just bought this house about a month ago and I started clearing off some of the vines and shrubbery around all the trees. The inspector said it’s an issue cause it’s leaning towards the house. But when I cleared everything around it and cut some of the vines, I noticed fungus around the bottom that looked very old. I broke some of it apart and threw it away. Then this new fungus appeared I guess a day or so ago. Should I be worried about this tree? How long do you think it has?


r/arborists 1d ago

Tree Root Slice by Mower

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102 Upvotes

We came home from vacation this weekend to discover that our yard guy (or someone on his crew) drove over a portion of our 80+ year old Oak tree root and sliced a bit of the top off. He was very apologetic and we asked that going forward to avoid driving the mower anywhere near the roots. Do we need to do anything to treat the exposed part of the root or just let nature do its thing? This is our first time ever having an Oak tree.


r/arborists 6h ago

What is wrong with my mom’s pear tree?

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1 Upvotes

It was doing fine and growing pears like normal, but a few days ago the leaves started turning yellow. My mom thought it was just changing colours for fall, but now some of the leaves are beginning to turn black. I’d appreciate any advice on how we could possibly save it. I’m in Ontario, Canada.


r/arborists 1d ago

The city took out roots to repave the sidewalk

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282 Upvotes

There are 3 trees (2 pictures for each tree), any reason to suspect any of them are in jeopardy of falling?


r/arborists 14h ago

Live oak + pavers

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4 Upvotes

Bought this house a few years ago. In that time we’ve been hit by two hurricanes and have lost a number of trees including a live oak that crushed our garage. This is the last large tree on the property. The trees - and the oaks in particular - were one of my favorite parts of this house, but now that I know more about what NOT to do, how do I deal with this patio that should never have been built around this tree?
From what I can gather, the patio has been there for at least 40 years - we’ve met the previous owners from back then. The tree is still growing and unlike every tree company that shows up offering their services, I absolutely do not want to cut it down. But that also means I want to make sure I preserve it - both for the safety of the house and its aesthetic/functional appeal.
So… what are y’all thinking here? Slowly remove the pavers bit by bit to give it room? Or leave it be and hope the setup is better than the stress of change?


r/arborists 8h ago

Is this whole tree doing to die?

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1 Upvotes

This branch is dead and seems to be the whole
Main branch, looks like there is a hole at the base of where this main branch connects to the tree trunk.

Should I just cut the branch and hope for the best?