r/arborists

▲ 2.0k r/arborists

It's Happening: The Mad King destroying more trees, now in Wash. D.C.

No, not the cottonwoods on the border - trees on a historic DC golf course Donnie Dotard wants to re-design. ETTD: Everything Trump Touches Dies.

Park service could remove more than 500 trees at historic golf course Trump wants to redesign

By  MATTHEW DALY

October 10, 2026

https://apnews.com/article/trump-golf-course-trees-east-potomac-e13bd9c369ea4ebc3b95675a22865fb7

WASHINGTON (AP) — The National Park Service has begun a new round of tree-cutting at a historic golf course near the National Mall as the Trump administration proceeds with a plan to renovate the East Potomac Golf Links into a championship-level course.

More than 500 trees “that do not contribute to the historic landscape will be removed” as part of the rehabilitation project, the National Park Service said in a court filing Friday. “No healthy trees that are contributing features of the historical golf course” — including historic cherry trees — will be removed as part of the project, the park service said.

A total of 169 trees will be removed starting Saturday, with another 90 trees slated for removal later, the agency said.

The tree removals come as President Donald Trump has moved to turn the course into a world-class golf venue — part of his grand vision for Washington, D.C., where he has torn down storied structures, remade or renamed others and deployed the National Guard for more than a year.

...

The 106-year-old public course has been embroiled in a lawsuit since February. Plaintiffs including the DC Preservation League say the Trump administration’s reconstruction would violate the congressional act that created the park in 1897. The group sought an emergency stop-work order this spring because of concerns that work was expected to begin immediately on the course...

u/DanoPinyon — 4 days ago

Need help diagnosing these holes

Sweet gum tree at a clients house I worked for this morning, I was thinking some sort or boring beetle and or a woodpecker of sorts.

u/Thatonebencher — 4 days ago
▲ 15 r/arborists+1 crossposts

Cutting into roots

My neighbor has cut into the roots of my other neighbors magnolia tree. My house and garage sits under this tree and I’m worried about the health and structural integrity of it. Do you think this should be a concern for me? I don’t own the tree but neither does the neighbor that has cut it.

u/MerleMakes3 — 4 days ago
▲ 10 r/arborists+1 crossposts

Mature rain tree in south Africa rapidly losing its canopy

Title: Mature rain tree in South Africa rapidly losing its canopy — root damage, disease, soil compaction or possible poisoning?
Hi everyone,
I’m looking for advice from professional arborists or anyone experienced in diagnosing declining mature trees.
I have a large, mature rain tree located in Durban, South Africa (subtropical climate).
Background:
In April 2025, the tree appeared healthy, with a beautiful, dense green canopy.
Over the following months, I noticed a gradual deterioration. By June and July 2026, the canopy had become noticeably thinner.
Now, in October 2026, the tree has lost a substantial amount of its foliage. The remaining leaves appear yellowish, and leaves continue to fall.
Some important observations:
The deterioration has been progressive over several months rather than happening suddenly.
There has been construction activity near the tree.
Construction materials and other items have been placed on the ground around the tree, potentially compacting the soil and affecting the root system.
The tree has experienced significant canopy thinning and yellowing leaves.
I’m also concerned about the possibility of chemical damage or deliberate poisoning, although I have no evidence that this has occurred.
My questions:
Based on the photographs, what do you think is the most likely cause of the deterioration?
Could soil compaction from construction materials damage the roots enough to cause this level of canopy loss?
Does this look more like root stress, disease, nutrient deficiency or chemical damage?
Are there any visible signs that would suggest herbicide damage or poisoning?
Is the tree likely to recover, or could it be dying?
What immediate steps should I take to improve its chances of survival?
Would soil testing or an inspection by a qualified arborist help identify the cause?
I’ve attached photographs showing the tree’s condition over time:
Photo 1: Today 11 oct 2026 — current condition
Photo 2: June 2025 — Full canopy looks healthy
Photo 3 & 4 - some time in Sep 2024
This is a beautiful mature tree, and I would really like to save it before the damage becomes irreversible.
Any professional opinions or suggestions would be greatly appreciated.
Thank you!

u/omega_31 — 4 days ago
▲ 2 r/arborists+1 crossposts

Is this Japanese Maple Dying

The outer bark is damaged. This, I believed happened 3 years ago that part just fell off one day. Now we notice that some limbs don’t produce dense leaves and other limbs do.

Anything we can do to make things better?

u/MaverickScholar — 4 days ago
▲ 292 r/arborists

Planted 40 emerald green arborvitae 2 weeks ago and they’re quickly turning brown. What can I do to help?

All are 5-6ft tall. They’re planted 36” apart and are getting 4 gallons of water each per day. Is there anything I can do to help them survive?

u/Hrcd — 13 days ago
▲ 3 r/arborists+1 crossposts

Seeking advice on how to prune a large American Sycamore - NW Florida

have an American sycamore in my backyard. It was planted before I moved in 7-8 years ago and it’s grown very large. It’s never really been pruned other than some very low branches.

I’m trying to keep some grass growing in that area, which I know will be a challenge in any case. In one of the photos you can see where the main trunk splits off. Is that a good mark to shoot for?

I’m wondering if someone could give me advice on limbing it up to create more open space lower in the canopy so more light can hit the ground. I’ve seen some very old, beautiful American sycamores in my area that have very high canopies. I’m not sure if that’s normal or not. Any advice is appreciated.

u/TruckCAN-Bus — 10 days ago

How do I fix this crack in the tree

So I live in a new home and they planted a treee last year with this tape. I uncovered it today to find a pretty big crack along where the branch is.

I'm wondering if I need to patch this so it doesn't get bigger, like fill it with something and maybe zip tie it? Whats the best approach for this issues and can this branch be saved?

u/kangminkim1 — 11 days ago

Tree starting to split, what can I do?

Was hoping I can ratchet it or some sort of adhesive before winter because I think the snow will cause it to split down the middle.

I don’t know the tree ID, probably around 7-8 years old. Zone 5a

u/NoGloBeck — 12 days ago

Pine roots causing trouble

I’ve got some lovely pine trees in the garden which cause a bit of trouble for the surrounding garden though. The trees are about 30 years old (estimated) and about 15-20m high. My problem is that at several points some roots are growing out of the soil and keep pushing up the pavement and stepping stones. In other areas they are growing out of the lawn and I keep cutting into them with the lawn mower. (I’ve got plenty of wild flower areas but at this point lawn is the only practical solution.)

Would it be safe for the tree if I cut roots like the one pictured above? I am taking about 2-4 roots in different directions and situated at 5 - 12 m distance from the trunk.

u/a_bdgr — 12 days ago

I started to remove these roots wraping around my sweetgum, but it doesn't seem to be looking bettet.

u/memerdo — 12 days ago

Was this tree planted properly

Hi all, I kept hearing about exposing root flair and was concerned about this tree. Was it planted too deep and if so what should i do?

u/TheIInSilence4 — 12 days ago

What’s living in this oak?

Just noticed this at the base of a large oak on my property.

u/boylek22 — 12 days ago

This tree was dead, right?

Hello, arborists: was this Siberian elm still alive? I don't know much about trees, but when getting an estimate to remove a clearly dead branch, the tree company told me the tree as a whole was dead and that the green still on it was just offshoots still receiving nutrients from the dead trunk.

The trunk had some pretty big hollow parts with a little bit of crumbly wood inside while the bark seemed to have some sort of sawdust on it, but I just sent this picture to my girlfriend and she fears we cut down a healthy tree. This picture is NOT a cross-section of the main trunk, because we decided to leave about nine feet of it for wildlife purposes; I can add pictures of the main trunk in the morning when the lighting is better. Is there any evidence of death in this picture, though, so I can ease her mind tonight that we did the right thing? Thank you in advance for any help; please ignore the red lines, that was my crude attempt to count the rings.

u/MakeSomeIllinois — 11 days ago

Are these arborvitaes toast?

Why is the bottom like that? My husband trimmed them in a real dumb way last year and they’ve looked like sh*t ever since. Are they salvageable, if so, how? If not, do I just chop them down? They came with the house and are super close to it anyhow.

u/Agreeable-Ad-6986 — 11 days ago

Good gift idea

Hello,
I am not an arborist. I was taking to a neighbor about our neighborhood and how I wish I knew buying a new build meant no mature trees when I moved in. Turns out they’re an arborist or landscaper, and they used their companies giant truck (not quite a semi but very small) and brought over a tree and planted it for me in my backyard. It’s a maple, probably 8-10 feet tall, and a beautiful red color. I am so incredibly thankful and feel like I owe them. I looked up online about how much this might cost and see over 1,000$ plus for the labor/ tree/ equipment. I cannot afford that right now (with Christmas coming I’ve been buying one gift a week since the beginning of September for budgets sake) but I really want to repay the favor. I’m a lactation consultant but their children are middle school and up, so I can’t repay the favor with my job. What would be a meaningful gift and show how much I am appreciative ? I can swing 200$. I thought about stapling it to the tree before they planted it, but I came home with the cash and it was already done

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u/Remandchub — 11 days ago