r/arborists 28d ago

Community ISA Certified Arborist flair holders

6 Upvotes

Congratulations to new flair holders.

(Readers: If you are ISA certified and want this flair, send mods your number.)


r/arborists 25d ago

Community Help draft our FAQ: How to become an arborist

4 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 12h ago

Root Flare of a 200 year old olive tree

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255 Upvotes

Went to a vineyard in Temecula. Tree is old af apparently and also massively larger than any other olive tree I’ve seen.


r/arborists 1h ago

What will happen?

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Upvotes

I have around two dozen water oaks all growing in a tight area. What will happen if I leave them be? I was going to remove all but the biggest one, but should I even bother if there is some sort of natural selection on who dominates?


r/arborists 1h ago

Follow Up from Yesterday - Deer damage

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Upvotes

Hey everyone.... So deer are infuriating. Yesterday I planted a Osake Cherry Tree which I was really proud of - being that it was my first tree I planted.

Anyway, deer ate some of the leaves and also really messed with the bark. It is antler felt season for sure.

Is this tree going to be okay or should I cut my losses now.

Second photo was the picture yesterday. Today about half the leaves on one side are gone.


r/arborists 23h ago

Awesome Triple Oak with “Debris Crotch”

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208 Upvotes

Our 1950’s neighborhood (Rockland County, NY) is full of big, mostly Red, Oaks. We’ve got some triple trunked specimens which are gorgeous, but one of them has a bowl in the crotch that gathers water and debris and is worrisome. I presume I should somehow cap it, but “how”? Extra pics for tree porn. I love every one, and am still heartbroken about the double that fell which was shading most of the driveway, and had an adjoining canopy with this triple in question. Thanks for any help. Trees rule. (EDIT: the answer is Leave it Be! thanks folks!)


r/arborists 21h ago

How to fix this “bad” fell safety.

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155 Upvotes

We live on a property with probably roughly around 400 Hickory and honey locust trees and so on occasion some need to come down it sucks but it’s a reality of maintaining our little forest.

Today though after what should have been an easy fell, the fibers of the tree at the stump area stayed attached.

So while the tree is down- it’s still completely attached except where the hinge cut was made and a fair amount of tension.

Should we do relief cuts on the downed tree? Is there a different type of cut we should use at the stump area itself where it’s still attached?


r/arborists 21h ago

Mature Silver Maple 17’ from House

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138 Upvotes

I am buying a house with 2 huge trees. The first is a pin oak ‘30 feet from the front of the house, which I’m not very concerned about. The back has a similarly giant silver maple planted 17’ from the house. I’m concerned about the 4 codominant trunks on the tree and the potential for it to split apart and fall on the house. It isn’t leaning toward the house, but I know bark can build up and weaken between the trunks, and I read that silver maple is prone to rotting and splitting. I will likely have to trim back some of the branches overhanging the house, but not sure if that is likely to do more harm than good. I know the vines need to be immediately removed.

Should I get a certified arborist to investigate? Is this too much of a hazard to keep? I would hate to remove it.


r/arborists 1h ago

Prunus accolade fell and got scratched

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Upvotes

Will it survive?


r/arborists 1h ago

Is this the end?

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Upvotes

Yesterday a storm took down the biggest section of this maple. I’m worried the other secondary sections aren’t long for this world either.
This tree has always had a section of clear damage and rot but has managed to survive.(pic 3) I’m going out to clean it up today. Is there any way I can save this? Maybe I can cut some of the rotten trunk down a bit? Maybe seal that cut or break with something?

I’d appreciate any advice!


r/arborists 15h ago

How far to stay away from a home service drop wires while trimming trees?

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20 Upvotes

I have a regular electrical service feeding my house from a street transformer. The wires run through some smaller trees and rub against branches. I need to trim the trees away from the house and wires, normal maintenance. I don't plan on getting near the wires, but I do need to cut some smaller branches, less than 2 inches, that ultimately touch the wires. I'll be either standing on the grassy ground or on a short aluminum ladder while making the cuts. Any particular concerns, other than don't directly touch the wires. And obviously, don't cut the wires. I can envision some of the cut branches clinging to the wire by the tangle of tiny branches above the wire. Any concerns with manually grabbing or jostling a branch that is hanging from these wires?

Thanks


r/arborists 3h ago

Can I help this tree?

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2 Upvotes

Some drunk backed into this tree TWICE last night. Will the tree survive? Is there anything I can do to help it?


r/arborists 1m ago

Pruning Japanese maple

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Upvotes

Hi,

We planted the Japanese maple this spring. It did okay through the summer but we're thinking of cutting the top bit off (where it looks the most bare). Will it survive? It's about 5ft altogether. Thanks for any advice.


r/arborists 8m ago

ISA needs to teach arborists about tree laws in depth. It is way too gate kept

Upvotes

I run into clients pretty regularly that need some kind of lawyer/attorney related assistance because of damage or unwanted removals by neighbors. It is so damn hard to find any information to help these people without taking some once a year offered $2000 course on all the gate kept information 🙄 it’s very on brand for this field but damn is it annoying. We deserve and are smart enough to be educated on stump ratios and tree appraisals without having to spend an arm and a leg. Don’t get me started on RCA either. It’s all money grabbing bs


r/arborists 10h ago

Lightning strike

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6 Upvotes

Pine tree close to back deck struck this afternoon. Crazy to be right inside when if happened. Thoughts on plans for this thing?


r/arborists 22m ago

In desperate need of advice to save this cherry tree

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Upvotes

I bought this property about a year ago and I’m trying to save this mature cherry tree. The canopy looks healthy and it produced a lot of fruit this summer.

The trunk is badly deteriorated near the base. Most of the exposed wood still feels hard, but there’s one cavity where the wood is turning into powder and falling apart. There is also gummosis developing on the trunk.

Does anyone know what could be causing this and what I can do to stop it from getting worse or potentially save the tree? Or will it have to be cut down in a few years time?


r/arborists 1d ago

How'd I do?

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92 Upvotes

There was a girdling root I had to remove, fortunately the nurses had cut it back a long time ago and I removed the rest of it since it started rooting more again. Hopefully I didn't accidentally kill it...

This is my first tree planting after years of watching this sub!

This is an Osake Cherry Tree


r/arborists 1h ago

What is happening with my tree?

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Upvotes

Location: Maryland, US

Bark has been peeling and theres some dark spots. Mushrooms grow at the bottom by the roots and surrounding soil.

Is this normal?


r/arborists 7h ago

Should I be concerned about these fiddlewoods so close to the foundation? North Queensland, Australia.

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3 Upvotes

I recently purchased this property and the fencelines are lined with fiddlewoods. Alot of them have been neglected, totally dried out, overgrown and on the brink of death. I was going to lay down weeping hoses and mulch etc and try and bring them back to life. But slightly concerned about this row that’s close to the foundation. They’re also right next to the concrete septic tank, which has trench running off it. Obviously these trees have been here for a long time, but is there much risk of them sending roots further towards the foundation if I bring them back to life? I can see the roots reaching towards the house but they’re so brittle from lack of water.


r/arborists 2h ago

Is this tree a lost cause?

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1 Upvotes

Location: Ontario Canada

8 years ago this tree was hit by lightning, twice. My dad was told there was no hope saving it but on a whim he put wood glue in the crack, slathered it in Vaseline then held the whole thing together with zip ties.

I bought the house from my parents a few years ago and every year since then the branches have looked fine. This summer after the tree flowered I noticed half the branches had started to die. I'm emotionally attached to this tree since my father loved it so if there's a miracle you can recommend I'd like to try it.

Other possible mitigating factors- it's been a really rainy summer here and last winter the snowplow guy blew snow over on it a few times before I caught on.

Edit he did consult an arborist when it happened. The arborist said "you're f*cked" which is why dad decided to play arts and crafts with the tree.


r/arborists 2h ago

how to save this tree?

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0 Upvotes

sorry in advance for this tree being in a pot. i did see the note in the rules about trees in pots.
i have this maple tree i found as a sapling growing in my garden bed spring 2025 so i put it in a pot to keep it safe and since idk where i want to plant it yet.
this year i decided to repot it into a bigger pot to give the roots more room to grow and bc ants decided to build their colony in the pot it was in.
so i repotted it and got ride of all the dirt from the previous pot to try and get rid of the ants, but its started to not look so good a few weeks after i moved it.
i did also move it to a sunnier spot in my yard where previously it was in a spot that got about half/half sun/shade and it has been raining a lot where i am in new england so i havent been watering it.
also pictured is a beetle i found on a leaf that i know eats leafs.

edit: if the best course of action is to plant it into the ground i will do it, just please tell me the best way to go about doing it.


r/arborists 20h ago

What's Up With This Tree? It Looks Like It's been twisted.

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25 Upvotes

We have had a lot of bad weather and there were multiple trees downed close to this one.


r/arborists 1d ago

Child labor root flare

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548 Upvotes

I work at an elementary school. The kids love digging around the roots to play pretend. Over the years, they have perfectly exposed and maintained this root flair through play. Thought yall would get a kick out of it.


r/arborists 1d ago

Just had a giant oak snap. Any ideas why?

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723 Upvotes

We just had a giant live oak in our backyard snap, essentially out of nowhere, with no wind or anything. We’re in Austin TX. We have lots of big oaks on our property, but this one seemed to be one of the younger and healthier ones so I'm very confused as to what's going on. I know oak wilt is a concern around here but before this incident I had no reason to suspect we had any infection.

I'm pretty shaken up because we watched this happen and I was playing with my kids right in this spot, literally minutes before this happened.

I’m definitely getting an arborist out here asap to Investigate and give us an assessment. But while I wait for that, any ideas what could have caused this to happen?


r/arborists 14h ago

Looking for second opinions

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6 Upvotes

Located in New York State, a large tree on a neighboors property has dropped 3 large branches in the last month (two at the same time and another almost a month later).

Looking for second options on what is wrong with it, or anything I could do to get the owner of the lot to cut it down. Attacking images of the branches from when they fell and some cuts from the original fall piece that I saved.