Ooze in the News

Arborist Forum

Help Support Arborist Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Waht do you do with a foamy tree?

  • Leave it alone, slime flux does not hurt trees

    Votes: 7 46.7%
  • inject an approved chemical according to directions

    Votes: 0 0.0%
  • trim off the dead bark and rinse the infected area

    Votes: 3 20.0%
  • Cut er down, she's a goner

    Votes: 5 33.3%

  • Total voters
    15

treeseer

Advocatus Pro Arbora
Joined
Jan 2, 2004
Messages
6,904
Reaction score
368
Location
se usa
Tis the season--already!--for slime flux on oaks in NC. Tap that black bark and you hear a hollow sound. Sniff the ooze; it smells like old skunky beer.

It's on your customer's prize tree. What do you do?
 
Last edited:
First time I seen that weird stuff ... man you guys get some BS with your trees, what is that crud?
 
vh, I think it is getting more common here; just my anecdotal observations. on one site (UNC campus), I counted 25% of the old oaks with it; more on white oaks.

Dan thanks for the resizing, and welcome back. Hope you're gentler on the sensitive, and avoid any more involuntary vacations. :) Re appraisal mtg, no, 3 in front was enuf for them, and I got hot irons in the fire here. It's tomorrow, isn't it? Wish it was close; I'd go.

only 5 votes so far--cmon,it's a secret ballot, nothing to lose!
 
Guy, There aren't enough options in the poll.-On many species I leave it alone. On some species I excise and do a disinfecting rinse.
 
Stumper said:
Guy, There aren't enough options in the poll.-On many species I leave it alone. On some species I excise and do a disinfecting rinse.
So you would vote for #1 or #3. Maybe there were too many options. :eek: NOte that we aren't talking about slime flux from deep in elms and poplars, but ooze from oak bark.
On which species do you excise? What kind of disinfectant so you use? You realize of course that we are getting into NEWTS territory here; risky business. :alien:
 
I leave it alone on Elms and Cottonwoods. When it gets into Globe Willows in this area it tends to progress further and further around the circumference of trunk or limb until it girdles them.(There are always insects under the bark getting drunk on fermented sap and stumbling around breaking the furniture on the Globes- I blame them for moving it deeper/further around.) I have excised and used a water and chlorine bleach solution(10-15% bleach) for disinfection. It works. Hydrogen Peroxide has been suggested as an alternative which I intend to try.
 
Stumper said:
Hydrogen Peroxide has been suggested as an alternative which I intend to try.

Yeah, i just been sitting back waiting to hear about that; and how Guy recomends to use in what strength. Mostly on oaks here.

i think the primordial ooze browns grass etc. and in pairallel, not good for tree either wherever it runs through more delicate tissues. Also, attracts a bunch of drunks as Stumper notes leading to more destruction directly and/or future; from lil'ones that seem to follow in the wake of bug's drunken activities too (like some parents i know..)!
 
Last edited:
Only 12 votes so far, and 48 views? Cmon guys (and gals), no risk, no obligation.

Here's a pic I took an hour ago, on the town hall campus of Apex NC. The foam on the left was the edge of the infection last year, the foam on the right--the longest streak of ooze I've ever seen--is the edge of the infection now.

This white oak is not very stressed; the whole root system was nicely mulched 4" hardwood chips a few years ago, crown is full and healthy. No root disturbance in the last 10 years.

Take a look on the next post(thanks Dan), and make a vote!
 
Last edited:
MasterBlaster said:
Almost obscene.
Just wait til the bugs come; Japanese hornets as big as your thumb. That long drip is pretty obscene; does remind you of something else in a totally gross way;
up to a billion bacteria swimming around per milliliter, dividing every twenty minutes:
OOZE IN THE NEWS

“Roll out those lazy, hazy, crazy days of summer; those days of soda, and pretzels, and beer!” as Nat King Cole sang way back when. Summer is also the time for other foamy stuff, the kind that has certain insects singing songs of cheer. However, this is not good news for the unfortunate older trees that serve as taverns for moths and hornets and other imbibing creatures. Tree owners who find these frenzied congregations on oozing lower trunks of their older trees often call arborists this time of year. But insecticide is not the answer, because the insects are only a sign of trouble underneath the bark. Oozing slime is a symptom of bacterial infection, and “…warm temperatures are favorable for the development of some bacterial diseases…” as John Lloyd notes in Plant Health Care for Woody Ornamentals.

A coating of polysaccharide, which is called a “slime layer” for obvious reasons, surrounds bacterial cells. When the bacteria multiply, they are forced out of the host plant and ooze down the bark. Dividing as fast as once every twenty minutes, they quickly build up their numbers to as high as a billion per milliliter. A cocktail of bacteria--Pseudomonas, Enterobacter and others--, yeasts and other organisms causes slime flux disease. Whether any of these organisms is particularly pathogenic, or it is simply the physical pressure caused by all of them multiplying that kills the bark, is not clearly understood. Fermentation produces gases such as methane and carbon dioxide, which increases the pressure that ruptures the bark. Many different microorganisms grow in the flux producing an indescribably foul or alcoholic odor that is hard to miss.

Different species of trees have different types of slime flux disease. The type that is found higher up in wounds and crotches of elms and poplars are considered relatively benign. They seldom seem to aggressively damage the bark. What damage occurs is well above ground level and considered correctable. They are located in Zones 2 and 4 as defined in Dr. Kim Coder’s Hazard Tree Evaluation form, published in 1990. On older oaks the disease is quite different; it is typically found between buttress roots. This is Zone 1, where damage and disease are considered critical. Previous physical damage or previous insect injury is seldom noted at infection sites on the trees studied. Like included bark in a crotch, the bark between buttresses seems to be squeezed. One theory: the tree opens itself up to infection by wounding itself when bark is included, and the bacteria enter from the soil. This is confirmed by Dr. Alex Shigo in Modern Arboriculture: “Included bark between roots and root stubs are common underground infection courts.”

TO ACT, OR NOT TO ACT (is that the question?)
 
I lkean towards the leave it alone and monitore. Most of the slimeflux we have up here is in included crothces an knotholes, more of a "stumpwater" fermentation.

Would this be anologus to mild jockitch?

I've not seen what is in your picture more then a few times, though there is a newer pathogewn getting into the A. plantinoides the past 5-6 years, causing sour seaping cankers and apical decline.

In the case of your pictures I would maybe recomend some "tree surgery" and sanitation for aesthetics and the wasp/hornet risk.

Though I love the drunken squirrils and butterflies you see around those things.

At the resort last year there was a big one with some squirrils that would hang around it an then have problems getting back up the trees

don't drink and climb
 
Sorry, can't vote and can't say.

A BIG zero experience of that stuff, weird.
 
Very good and very interesting.

Sounds like you're snookered with treatments though.

Well, get those uni students cracking on some research. It's caused by some sort of bacteria not fungus so should be able to nail them in the end.

Until then, common sense prevails, look after the tree.
 
OK I guess 14 votes is all there is. The right answer is...1, 3 & 4, depending on the tree. 3 is the best overall strategy for bacterial bark ooze on oaks, which keeps getting confused with wetwood but is distinctly different. The pic with the long streaks of foam documented that it's killing 4" of bark/season, so leaving it alone is not really a good option.

but, on that tree, the town's been told to plan on replacing that tree. Right now it's killed 40" of the circumference, with only 32" living bark left. So soon it will be cut down, because she's a goner.

O fhte links JPS put up, NCSu my homeboys were the closest. UGA way behind. Hard to believe it commonly occurs in NC and rarely elsewhere--keep your :Eye: and nose looking out for it; prime oozing time is June. I reviewed most of them when I was writing the article. I'll try to attach the complete article here for those who may be interested, also viewable at www.tcia.org August 2004 issue. As always feedback good or bad is welcome.
 

Latest posts

Back
Top