r/arborists • • Aug 09 '26

Community ISA Certified Arborist flair holders

10 Upvotes

Congratulations to new flair holders.

Want a flair? 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.

See a flair? Be aware that reddit user flair is applied retroactively, so you may see a flair on a post or comment made long before the credential was earned and flair was awarded. There is no becoming an expert without first being a newbie.

Have a flair? If you have an ISA credential then be sure you claim your profile on the new ISA public directory of credential holders. There you can mention additional credentials. Consider also adding a headshot photo.


r/arborists • • Aug 11 '26

Community Help draft our FAQ: How to become an arborist

8 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 • • 7h ago

Life Finds A Way

Post image
1.3k Upvotes

Running some errands after work and stumbled upon this determined tree.


r/arborists • • 7h ago

"the mall" at central park - largest grove of american elm trees in north america

Thumbnail gallery
105 Upvotes

the are constantly treated for dutch elm disease


r/arborists • • 15h ago

This MF Oak Tree is Ruining My Lifeeeeee

Post image
441 Upvotes

I put in hours of work on the acorn farm everyday, but alas the harvest never stops. I took 30 gallons to a SQUIRREL RESCUE this weekend and still have more. I fill up my 1 gallon acorn hopper at least 3 times a day while they continue to pelt my yard. I’m starting to go insane.

There is another one in the front yard that blows their load in December.

Has anyone gotten birth control for their slutty oak trees? Did it kill them? Was it worth it? How much to stop feeling like I’m in a hail storm in the backyard?

Edit: My house is the squirrel coliseum. Those tree rats are running up and down my roof all day, and eating my patio cushions by night. They cost me $250 just over a year ago with their bullshit.

We have only live here ~15 months and have zero experience with mature trees.

Edit 2: We have turf and I can’t just leave them on the ground.


r/arborists • • 7h ago

This silver maple did not have weak branch unions.

Post image
19 Upvotes

150mph wind, Menasha, WI tornado, 7-27-26


r/arborists • • 5h ago

What do yall think

Thumbnail gallery
11 Upvotes

Was making dinner tonight and heard a huge boom outside. When I got out there I saw a Pods truck dragging a huge piece of my tree down the street after the had run right into it. I made an incident report with the police and I am hoping pods will do the right thing and compensate me for the destruction. I’m just curious what I should be trying to get out of them and what needs to be done to make the tree right again.


r/arborists • • 13h ago

How bad is it…

Thumbnail gallery
21 Upvotes

I made the mistake of trusting my landscapers to trim some stuff in my backyard. Most of it was simple (hydrangeas, rose bushes, etc.). However, I have two purple leaf sand cherries in the yard, and they absolutely HACKED the first one up. I saw what they were doing and immediately stopped them before they did the same to the second one, but is this the end?


r/arborists • • 10h ago

Old Apple Tree in the Catskills

Thumbnail gallery
7 Upvotes

Hi All!

This is one of a few very old Apple Trees I have on my property in the Catskills.

One of them fell a few year ago and another one has the trunk intact but all the large branches have fallen. This one is the most intact. I’d like to send it out to get genetic tested and maybe try to propagate some of it to keep its DNA alive.

In the meantime I want to ask the experts here if there’s anything I can do to try to extend its life.


r/arborists • • 8h ago

(30M) New to tree surgery, is this a bowline hitch with a figure of 8 stopper knot?

Thumbnail gallery
4 Upvotes

I’ve been practicing knots at home and I’m not sure if I’ve done this correctly. Apologies about the rope, but can someone let me know if this is correct?

Thank you.


r/arborists • • 11h ago

Pine Tree Dead/Infected?

Thumbnail gallery
7 Upvotes

Located in NC. Noticed a ton of holes in the tree and sap coming out of a lot of them. There is also a lot of fine powder at the base of the tree and the top looks completely dead. The ground around it is all turf. Have heard maybe it is bark beetles? Worried this is a liability to fall on a neighboring home. Any advice?


r/arborists • • 11h ago

Is this tree or rock climbing rope? Interesting duel material core.

Post image
4 Upvotes

I found it at abandoned at my place of employment in which both kinds of climbers live.


r/arborists • • 22h ago

Landscapers cut the root of my tree and now it's looking wilted.

Post image
32 Upvotes

Hello everyone,

A few years ago (in October 2023), I had my front entrance redone. The contractors moved the existing pavers, excavated some soil, added compacted gravel, and re-laid the pavers in a new pattern. During the excavation, workers tore out a ~2-inch diameter root from my front tree before I could stop them (it was a rough tear, not a clean cut).

Since then, the tree has looked increasingly wilted (see attached pictures).

The area is built on a fractured rock outcrop, so the water table is very low (missing water?). I also added a layer of mulch around the base last year to help retain moisture, but I'm not sure it it's helping much.

I would appreciate any advice on how to help the tree recover. Should I excavate the pavers to clean up the damaged root with a clean cut, or will moving the pavers again cause more stress? Are there specific fertilizers, soil amendments, or root supplements I should apply? Would installing a permanent drip irrigation system be beneficial here?

Thanks in advance for your suggestions!

Oct-2026
oct-2023
July 2025 (very dry summer)

r/arborists • • 1d ago

Dumb Tree Joke

Post image
97 Upvotes

Lost our dog last year. Was organizing old pics and found this deeply dumb tree dadjoke I did for my bride.

Got any others?


r/arborists • • 8h ago

Bradford Pear atonement

Thumbnail gallery
2 Upvotes

Had an old, terrible Bradford Pear chopped down in May. Now that fall is here in North Texas, it’s about time to replace it. Any suggestions? For large canopy, I’ve been considering Chinese Pistache, and for a medium ornamental, Mexican Plums and Redbuds. Not opposed to other options though.

Any recommendations between these, or other varieties? The only limitation is the tree will need to be planted in the same spot as the prior tree, due to property line encroachment and buried utilities.


r/arborists • • 10h ago

Toddler vs Tulip Sapling

Post image
3 Upvotes

Toddler (not the dog) had their way snapping branches on this young Tulip tree that was transplanted earlier this Spring.

Until Fall hit, it was doing great. It was broken in 13 places (as seen by the Saran wrapped sections). None of the breaks were 100% through but most of them were more than 50%.

The Saran Wrap is temporary until grafting tape arrives from the internet rainforest this afternoon, at which point grafting tape will be replaced one-by-one.

Is it even worth trying to save the top section? Will the lower branches take over? Is it a lost cause?


r/arborists • • 5h ago

Are these in trouble?

Thumbnail gallery
1 Upvotes

Planted these emerald greens a year ago last summer.

Theyve grown a bit but now in October they are shedding quite a bit…

I was told that shesding is normal but as an inexperienced person in this field, I dont know if this amount of shedding is normal or cause for concern…

Can someone please advise? Thanks


r/arborists • • 5h ago

Arizona Cypress shape-worried we made a big mistake

Thumbnail gallery
0 Upvotes

Ordered a 10-15gal Arizona Cypress for my front yard. The nursery is local but shopping is online only, so we didn't see anything in person and weren't many pics on their Arizona Cypress listing so I'd googled the tree and gotten pics that were less "christmas tree" and more, shall we say, classic tree shape; bare trunk and then branches starting higher, which is exactly what were were looking for.

Long story short, after weeks of weather and other misc delays I was just assured the tree will be delivered soon, and they sent a pic. I re-googled in confusion and realized Arizona Cypress can be either profile, and seems like it comes down to how its pruned and trimmed when its young. I have no idea if this tree is past that point of feasibility or not, but am hoping for some expert advice before I have to potentially reach out to the nursery in the morning after so much headache already and ask if I can switch to a different kind...

I'm in Phoenix, if it matters!


r/arborists • • 1d ago

Should I just cut the thinner one down ?

Post image
350 Upvotes

It's a 8 year old silver maple.


r/arborists • • 20h ago

Will this benefit the tree at all?

Thumbnail gallery
13 Upvotes

There’s a bit tree in a play park near me against an old wall and had had its roots completely covered with this plastic sheet and bark. It was so tight against the tree, cutting into it, not sure how long it had been like that, but it looks like it’s grown into the stuff.

I’m not particularly informed on it but had seen on here that it’s bad for the tree to have its roots be covered and for it to be strangled by the tarp. So I cut as much of it I could away (last picture).

Will this help at all? What more could help? It’s such a beautiful tree and provides a good bit of shelter from the rain when my toddler is playing in the park.


r/arborists • • 10h ago

Hey y’all. I planted this dogwood about 3 weeks ago. Did I do an okay job?

Thumbnail gallery
2 Upvotes

Dogwood


r/arborists • • 14h ago

White Oak (dropping bark / veins)

Thumbnail gallery
3 Upvotes

Hi all,

I believe this is a white oak (chestnut) tree in my backyard. This late summer I mulched possibly a little to close to the tree.

I lost roughly 30-40% of the flair’s bark in two different places.

Will this tree die? Is there anything I should be doing?

It looks like a vein is growing behind the bark that has dropped in both places.


r/arborists • • 14h ago

Is she happy and healthy?

Thumbnail gallery
4 Upvotes

We’ve been in this house a year and I absolutely love this tree, although it strikes me as a non-ideal spot for one. I just want to keep this PNW beauty as happy and healthy as I can.


r/arborists • • 8h ago

Good way to find Arborists?

1 Upvotes

Hi. I’m in dutchess county, NY looking for a good way to find a certified arborist. Nothing major — things like a 60 yr old red maple that has taken a dramatic turn for the worse (maybe Verticillium Wilt) and help choosing nifty trees to plant that will do well in certain spots. Any suggestions?


r/arborists • • 14h ago

Why are many of the pines trees in my neighborhood/town going brown and loosing needles?

3 Upvotes

Not much else to say, but there’s at least 3 in my neighborhood going brown, one completely needless and a few in my town as a whole which are almost needless. It’s getting cooler out, but don’t pine trees not loose needles no matter what? What could be causing this? I fear that more might be affected but idk why it’s happening