(55) Crown Rot
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- Опубліковано 24 сер 2024
- Crown rot at the base of a tree is not always easy to identify. When the base of a tree decays due to irrigation hitting the tree, a weakness can develop. Some species of tree rot faster than others and some will tollerate the weakness. Very important to investigate closely to see what you are getting yourself into. Climbing a weak tree can lead to a disaster.
Identifying Hazardous Trees
This is really an area that needs to be done by an expert but there are many signs that indicate a problem or potential problem. It is important to understand that different types of trees have different characteristics and problems unique to the variety. That said, I will give some general advice that are “red flags” to a potential problem.
Cracks in the limbs
This sounds pretty basic but I am amazed at how few people really look closely at their trees. It is often obvious when a limb is splitting open but not always. Small cracks in main crotches can sometimes ooze water or pitch (sap).This can happen suddenly or take some time to develop. If you see cracks or openings, call an Arborist immediately. That may be the only warning you get.
Cracking noise
I have heard and been told by people that they heard a loud crack, but could not see anything. Sometimes the crack is on top of an upper canopy crotch or running along a large horizontal limb. Don’t ignore this obvious clue.
Change in tree trunk angle
Many times in my career, clients have called me to say “it seems like the tree is leaning more than it was before”. Sometimes it is a persons fear or imagination but many times there was a weakness underground that caused a change. The large Stone Pine in Blaney Plaza was saved because a city worker noticed a change in angle. Sure enough, when we looked close, the whole root ball was coming up and this huge tree was on the verge of going over. Sometimes cracks in the soil are a good indicator of movement. Also look for a separation in the soil line around the base of the trunk. In rainy weather, the soil becomes muddy and these clues are often harder to read.
Drooping limbs
Do some branches seem lower than they did a few weeks ago? Is there a dramatic difference in the way a tree looks? There is a situation that is very common during hot weather called “summer limb drop”. A drying out of the limbs can cause a sudden limb failure, even on a windless day! Some of the species that this happens to include; Monterey Pines, Italian Stone Pines, Valley Oaks, Eucalyptus species, and large Ash. This can happen on other varieties of trees as well but these are the most common in the Bay Area. (Correct me if you think of others and I will list it as well).
Mushrooms at tree base
Some types of wood decaying organisms will push up fruiting bodies or mushrooms. It is not the actual mushroom that is the problem but what causes the mushroom. Rotting roots or trunks cannot always be identified at a glance. There are techniques that help us to determine the extent of the decay and likelihood of total tree failure and this inspection needs to be left to an expert. However, if you see these clues, get help before it is too late.
Fungal bodies on trunk
Just like the ground mushrooms, there are many types of growths that indicate decay.If you see anything unusual on the trunk of the tree, other than moss or lichen, then it is a good idea to get it inspected. It may not be a big problem or it might just be the flag to a bigger problem. Black balls on the trunk and limbs that look like charcoal are a big indicator to a possible disaster. Get the tree checked out!
Girdled roots
This is a tough one to identify as a problem but sometimes there are surface signs to girdled roots. When roots twist around each other they can sometimes cut off normal root development. If a tree was in the pot too long, then the roots can grow in a circle, rather than spreading out. Sometimes you can recognize a girdled tree by a lack of a root flair. If the trunk seems to indent at the ground, that may be a clue to girdled roots. Canary Island Pines are one type of a very fast growing tree that we see failing from having lived in a pot too long. The fast growth on top can exceed the root development and a girdled root ball can cause the tree to snap off at the ground.
There are many other signs of potential problems such as hollow trunks, cavities, past trunk damage, insect activity, improper past tree work, etc., but these are really areas that you would be guessing at. The main point that I am trying to make is that if you notice anything that worries you then you should get the tree checked out.
Thanks Blair. You have educated me as to why my fruit trees are suffering from the same issues. I thought it was due to poor drainage in the soil but I see now it’s from the sprinklers I had set up :/
OpenyoureyesDX hopefully an easy fix?
You remembered to take photos before excavating the basal rot. I've forgotten once or twice to take "before" photos until I've gotten into the mess.
This is an old video, thanks!
Another great video! Love this type of content. I could watch for hours, thanks for taking the time to share!
Jacob's Ladder Tree Tech this is one of my really old ones.
Wow yeah .Must be the research I was doing on Google.lol
Jacob's Ladder Tree Tech please check out my newer videos as well
The Tulip Tree is the state tree of Tennessee, often referred to as a Tulip Poplar. People will argue that this is the correct name, but the Tulip Tree is definitely not a Poplar. Anyway there are 3 enormous Tulip Trees in the Smokey Mt. National Park up in Greenbriar, along the trail to Ramsey's Cascade. They somehow escaped the extensive logging that was done before this area was designated as a National Park. The tallest is over 190 ft and they are over 500 years old. Magnificent specimens!
Ruthless Goat I have never seen an ancient Liriodendron tulipfera
Here is a link to a Facebook image of me and my son standing in front of one. This tree is older than our nation. facebook.com/photo.php?fbid=10205421855331713&set=t.1289193421&type=3&theater
If you don't do Facebook, or can't see this, give me an email and I'll send it to you.
Check out Joyce kilmer memorial forest sometime. Largest trees on east coast
The oldest tree in New York City, the Queens Giant, is a tulip poplar. Estimated to be 450 years old.
Not sure about sprinkler doing the damage but the grade on the tree looks too high. need to regrade.
So what happened to this tree three years out from the date of this video?
metatech believe it or not, it’s still there
Been over ten years now, amazingly the tree is still there.
Great diagnosis. What do you recommend for treatment if the homeowner's goal is not to remove it but to heal it?
Tree Doctor 911 my question exactly! Would really like to talk to him for just 5 min!!!!
excellent analysis sir
This is one of early videos
This video is ten years old and interesting to know that this tree is still there. Area that I opened up, Dried out? Not cured but seems to have slowed down.
I read to get ideas of solutions to save trees
Each situation is different. Be specific
I have a Red Maple, at least I think so from what I can find online and live in northeast Florida. I believe that it is suffering from root rot and I'm not sure how far down it goes but it is up along the back past the root a bit. In your opinion do you think it could be saved? It has four offshoots and the main trunk is about 26" in diameter
Still there in 2020? How’d the roots look?
Still there
Hi, I have some olive trees in my pots with some dark portions on the crown near the base of the soil. It isnt as worse as this case but am just too worried about them. How do I treat such problem in case that this occurs to my trees? Is there any chance of recovery? Hope you could advise me on how to treat them. Thanks a lot in advance. :)
Without seeing them I would just be guessing.
How do you prevent this rot from occuring?
This was caused by a sprinkler hitting the trunk for many years. The cause of what starts decay is often an injury or insect/animal damage.
I have a giant oak tree and during hunting season we accidentally shot it how do I fix the holes
buddy camp no fixing it.
@@arboristBlairGlenn what is that stuff called that forms around the wound
@@arboristBlairGlenn the wound is not deep it just took off the bark the wound is maybe an inch and a half wide will the tree live if I keep bugs out of it
buddy camp callus wood. The tree will likely be fine.
@@arboristBlairGlenn thank you man
See there is this thing called a rocket launcher right, and you blow the tree up front a safe distance. But in all seriousness this was very interesting to watch and very informative