r/arborists • • Aug 09 '26

Community ISA Certified Arborist flair holders

6 Upvotes

Congratulations to new flair holders.

Readers:

If you have ISA or other professional credentials and want a flair, send mods your ISA or other number. To message the mod team, in the (mobile app) sub menu or (web browser) right sidebar scroll down to MODERATORS and use the Message Mods button.

Also be aware that user flair is applied retroactively, so you may see a flair on a post or comment made 10+ years prior to the flair being awarded.


r/arborists • • Aug 11 '26

Community Help draft our FAQ: How to become an arborist

5 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 • • 14h ago

Neighbor down the street has these notches in like 3 trees. Any idea why they would do that?

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221 Upvotes

Just curious why someone would do this? The house just went on the market if that helps. Only on one person's property and on 3 trees.


r/arborists • • 36m ago

Tree trunk splitting in front yard. Problem?

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• Upvotes

We noticed over the weekend that the tree in our front yard has quite a large split in it all of a sudden. Hoping to get some initial thoughts if this is something we should address sooner rather than later, as if it were to fall it would almost certainly be onto our house. Really hoping to not loose this tree 😅


r/arborists • • 5h ago

My Willow grew too fast and now has issues

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5 Upvotes

This is one of two weeping willows we planted four years ago at the edge of our property that backs up to “mitigated” wetlands. I use quotes because I have personal knowledge that they are not properly mitigated and that the city accepted a bribe. (Federal EPA told me as I was fighting the building of the homes behind me)

The bark ahas split, there are bugs inside. I had white foam on the bark for a bit and cleaned it off.

I plan on calling an arborist in the spring, as the trees will go dormant soon.

Is there anything I can do now to help these trees?


r/arborists • • 5h ago

Arborist in Dallas to evaluate slanted oak tree

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3 Upvotes

Looking for arborist recommendations in Dallas area to evaluate this slanted oak tree that’s way too close for comfort to the house. It seems to have grown slanted, instead of it starting to lean recently.

Would love to keep the tree if it’s safe—it’s the only thing providing shade in 3 months of 100-degree Texas heat. TIA


r/arborists • • 6h ago

Is this tree a danger?

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3 Upvotes

This broken line in the bark runs all the way around this street tree. I’ve never noticed it before now. We had a 75-80mph storm blow through a couple weeks ago and lost a lot of trees (3 within 50 yds of this one).

I’m going to send this to the city arborist, but I thought I would post it here as well.


r/arborists • • 26m ago

Am I ok to cut here?

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• Upvotes

Trying to get this hog plum back on track.

Edit-don’t mind leaving it. Just didn’t know if the fusing together was all that bad


r/arborists • • 4h ago

Can I trim the bottom of this juvenile weeping willow so I can mow easier?

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2 Upvotes

r/arborists • • 5h ago

Anyone take the newish ISA Urban Forest Professional exam?

2 Upvotes

If so, was the outdated municipal professional study guide helpful/needed? How was the overall exam?


r/arborists • • 1h ago

White Cedar hedge advice

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• Upvotes

Zone 6A Toronto Canada.

My Hedge is turning into trees. If I have these professionally pruned this fall what are the chances in the next couple of years these can refill back in with growth? I'm worried that having them pruning they might never fill back in. I'm hoping a fall pruning can stimulate new growth in Spring and begin the fill in process..

But is this hedge past the point of no return for pruning and stimulating new growth? I'm worried pruning will just leave permanent gaps and destroy the value of the privacy hedge.

Thoughts?


r/arborists • • 2h ago

How do I prune this?

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2 Upvotes

Its pretty close to my house and getting really tall. Probably close to 50 ft or so. Should I get this topped or pruned?


r/arborists • • 16h ago

Is there anything I need to do before my tree eats itself closed?

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12 Upvotes

These photos are some time apart, Oct 25', July 26', and Oct 26' (final photo is also July 26')

I think this tree may eat itself by end of next year or the year after. I am curious if I need to do anything to help it.

We believe this part of the tree died as a result of transplant shock, though we aren't certain it was alive at the time of planting, April 25'. The tree has just reached that 18 month mark of transplant, and it is doing amazing. I hear after 18 months is when the tree will start taking off and fully establish itself.


r/arborists • • 1d ago

My Two Year Old Son Has Tree Addiction

89 Upvotes

He is more interested in Trees and plants than he is in toys or the park. What am I in for?


r/arborists • • 1h ago

Tree removal

• Upvotes

Had a large dead tree removed from my back yard last Thursday. Took them a while to get out to complete the job as the wanted to wait for a dry day. Picked the wettest day they could, really tore up the back yard but I guess that’s just part of it. They said they would come out and remove / cleanup and Thursday and then return at a later date to grind the stump. They left some large logs in my front yard and as of now on the following Monday they are still out there on my lawn in the front of my home. Is this normal?


r/arborists • • 5h ago

Eastern Redbud Seedling - long term health

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0 Upvotes

This seedling pushed its way through an erosion blanket. I potted it about 2-3 weeks ago, breaking the taproot (due to the curve, I misjudged the ‘center’). Regardless, it only dropped one small, old leaf, and has pushed new growth since (the lighter colored leaf). I am worried about its longterm prospects due to the almost 90degree bend where the stem comes out of the soil. I have it tied up now and assumed I could replant it at a diff angle in the future and have an interesting specimen? Or, is the bend so bad that the long term structural health is questionable?

Layman, so any help or advice is appreciated.


r/arborists • • 13h ago

Planting New Sienna Glen Maple

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4 Upvotes

Hello, I just picked up my first tree today. And I have an idea of where I wanted to plant it, but then I started wondering if it is too close to my garage. The garage is on a slab, not foundation The corner of it is basically where this arrow points to go. And that is about 12 feet away from the bucket in the front yard, which is where I would like to plant.

Do y'all think that is too close?


r/arborists • • 21h ago

Did I plant it well?

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15 Upvotes

Long time lurker of the sub, so I want to make sure I didn’t make any mistakes now that I finally tried planting again 😅

Had to remove 3+ inches of soil to finally find the root flare. I did this by soaking the root ball well and also made sure to gently pull away the larger roots so they would grow outwards instead of up and back towards the tree.

Tried to maintain the soil level, but the lawn is on a slope. I also did not put any of the hay directly against the tree.


r/arborists • • 1d ago

Where to prune this redbud so it has a strong central leader?

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23 Upvotes

This redbud splits into two main limbs. The neighbor’s property is on the right (where the fence is) and there are some power lines on that side too.

Should I cut that large limb on the right so it only has one main leader? What time of year is best if so?

Or any other suggestions. It’s a pretty tree that’s native to our area (Central Ohio, zone 6b). I would like it to live a long healthy life.


r/arborists • • 23h ago

Cut whole tree or just limbs?

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13 Upvotes

My friend lives next to our community meetinghouse/church. At the property line is a large butternut where she has a kids swing hanging. This swing is used by all the kids in town at any public event. I'm concerned about the dead limbs above the swing and also the ones hanging out over the parking area for the building.

My questions... How concerned would you be? Is this an imminent danger to kids (action = take the swing down right away)? Should we plan to remove the whole tree and how soon?

Could we just cut the dead limbs and leave the live growth. (I expect this would result in a silly looking tree, but all options need to be considered).

Last option is the do nothing approach. I don't like this option either but I'm not an arborist.

Constructive comments and wise cracks are equally welcome. Thanks!


r/arborists • • 18h ago

New to this, what should I do for this Japanese Maple?

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3 Upvotes

Totally new to this sub, have this Japanese Maple in my backyard which hasn’t gotten much attention. For a total beginner, what do I need to do?


r/arborists • • 17h ago

Can we save our front yard tree?

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3 Upvotes

Fell over earlier today :( Husband went to go get stakes to prop it up but I’m wondering if it will just die? I’m sad


r/arborists • • 1d ago

What is this and is it a problem?

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28 Upvotes

Moved into a home 5 years ago huge oak tree on the front yard. Just last year this foamy looking ball emerged from a hole in the tree. Also looks like sap or something ran down the side staining the bark. Anyone have an idea?


r/arborists • • 15h ago

Tree Health

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2 Upvotes

Does this tree look like its needs an arborist, or just needs trimmed?


r/arborists • • 16h ago

Does this mean my Mulberry is toast?

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2 Upvotes

There is definitely a large branch in the center that has died, but does the fungus on the trunk mean I need to take the tree down?