treeseer

Here's an infomercial for the wrecking bar and the Aqua-Cannon:

Tony, the 'site language' tells me of probable poor rooting conditions. This is not being litigated, and your bar of 100% certainty is too high, even for that realm, or anywhere outside a house of worship. If you have another thought on how that vascular discontinuity process might be slowed, I'm all ears. The pruning dose will have to be higher if that continues unabated, wouldn't you say?

others: Tree Risk Management Form 130407.docx Basic_Tree_Risk_Assessment_Form.pdf

Soil erosion alone does not signify poor rooting environment, but it's a strong indicator of that probability. Discontinuous trunks or fluting also does not always suggest poor rooting conditions, but seeing that trend develop is an action item, on the tension side, with the building under it. Compaction levels, nutrient levels and hydration potential would be checked by sampling with probes etc. before specs written. "poor rooting environment" is an assumption to start with; this all based on a 1-minute check during a 52-acre tour. Another factor is the ripe-wood being aerated and being colonised by a possibly invasive and capable delignifier (G. resinaceum for example). But it's not either-or! Root function boosts the tree's ability to defend against the pest, so soil works are not ignored while the fungus is assessed and admired.

Oh, those...Yes if no MEWP then pole tools are needed to reach the periphery. A challenge to reach the right cut, but there's no good reason to make a wrong cut.

If that tree's in Kew Village, I think I've seen it, and the plums indeed were good! That landscape tree looks like it might want a prop or two...

If not Quercus macrocarpa, then what?

Yes, vascular discontinuity is a poor condition. O, if you mean rooting conditions, yes the slope it is on has been artificially eroded (leaves raked) for a long time. As visible, that buttress is colonised on both sides. It is the tension root on the side away from the building. So if the gano's pincer movement renders this root dysfunctional, that would increase the risk of failure onto the building. Comprendez vous, mon frer?

The first pic shows vascular discontinuity on the buttress ~1m from the ground. Deep soil improvement for that root would be a big part of the plan.

"What would you constitute as a 'tickle' in terms of reduction spec on a 100' plane?"" This would be on a leader-by-leader basis, but I'd say <10%--5%?-- based on the apparent good attachments of the ~8 major leaders coming off the ~5m stem. The purpose includes being able to tell any defect-centric observer that yes, steps have been taken to manage load. "Do you think management of trees with decay issues like this one is directly influenced by tragedies such as the fatality of the pregnant women in Kissena park in Queens last August, which I guess is relatively local and still fresh in the conscience of the public and tree managers alike ?" As little as possible. The arb in charge is well aware of the many recent tragedies in NYC, but is able to react to tree risk in a specified and tree-value-centric way. Despite the media and the victims' solicitors roiling up public sentiment, conscience stirs vigilance, not arborphobia, in this garden. .

Pics do not show Any hollow If you wanted it gone then ok

Yes there are different observations Imagining a fungus munching inside o my Lets keep in mind that losing heartwood Can help the tree

BBG has a fine collection of vets. This one's pushing 100', and < that distance is the building. The conks are a feature of admiration; no fell-happy assessor has gained influence thank goodness. In anticipation of more such concern, it may be due a tickle.

Schhwarze's Fungal Strategies (2000) Chapter 4 begins with the compartmentalization model, and verifies that theory with microscopic assessment. Since most fungi which endanger trees’ stability work from the inside out, the ways that trees resist that outward spread are reviewed at some length. Xylem rays can be the trees’ Achilles Heels, the pathogens’ paths of least resistance. Similarly, xylem cracks produced by rapid drying after removal of a branch are “motorways” for infection, so the authors suggest that “the use of wound sealants could be quite successful against wound parasites. However there is still a great need for research here.” When large branches must be removed, experimenting with sealants seems preferable to opening the heartwood to decay. Aesculus is not so good with rot ime. How long do you all reckin that the wound will take to close? Is there anything that an arborist can do to speed this closure?

This colonisation has been part of the collection at the Brooklyn Bot Gdn for a long time. The progression has been very gradual, as has the tree's response.

Or better yet, assess the tree's strengths as well. "Defects" are less important. The woundwood on the edge of the canker looks vigorous, and indicates a favorable prognosis.

well yes indeedy. David, I also can't recall seeing failure at a target canker, except for such a canker from Cronartium fusiforme on Pinus taeda. Here's a Q robur in Brooklyn NY US

Applying sealant might slow drying, dysfunction, and potential decay. Reducing, not removing the opposite leader would be a very good idea. Any self-optimization done before is not reliable, under the new exposure to the elements. Perhaps 10-20% off the end; an arborist on site can assess and improve structure.

Is that fungus a serios wood decay species? Xylaria in the US is reputed to be somewhat sluggish

Historic by US standards, the building dates to 1734 US champ in size, I bid to fix the lightning system and remove the broken cables. I will climb and measure it whether paid or not Keen to inventory associates Owner not keento open wallet for nowt Horrible abuse by branch removal Collar cuts omg

Stereum sp.? looks like a bark fungus not a woodrotter. Job1 (if paid) is to get the $#%^&*()& dirt off of the stem and find the flare. 5 minutes with a shovel could tell a lot.

Good to experiment, and follow up! "left side has very thick new growth and has nearly healed completely. Right side shows very little growth and new growth has lots of areas where it shows no new growth at all" Pretty hard to tell from here, under all that goop. If the right side is nearly the same, the squirrels left a lot of parenchyma outside of the wood. If at that time drying was less of a concern, then sealing the area probably inhibited more than it helped. If the wood was scraped bare by rodent teeth, I'm guessing that sealing may have done more good. This is the invasive gray squirrel? I'm sorry it got loose over there--wasn't me!

It's lovely, but you want to cut half of it off. What's your objective? Is there a picture? Wounds generally close better when made in the growing season.

"...This reduction wouldn't accord with BS3998 as the general principle of not removing more than 1/3rd of 'foliage bearing material' appears to have been exceeded. Further, as others have said, ideally the secondary growth you prune back to should be at least 1/3rd dia. of the branch you're cutting." I find these 1/3 guides (not Rules) to be without scientific basis, and utterly confusing. "In order to select a branch for removal, the diameter of the final cut should generally not exceed one-third of that of the parent stem or branch." Shouldn't this be "...the remaining lateral should..."? It makes no sense, either way. "Specifications for a percentage reduction are imprecise and unsatisfactory without reference to length, height, spread etc." "Overall it appears a little hard in places and because no suitable growth points are present, and Sycamore can be challenging to reduce anyway, some of the cuts are 'inter-nodal', i.e. between nodes/buds/shoots, which is akin to lopping (NOT that I would call this lopping but just to be aware.) Lastly, of course we didn't see the spec, in terms of reduction by how much, so it may be spot on! " I agree, without a 'before' shot and without the job's objective or any specifications, it's hard to understand what's going on. Most of the cuts seem to be in the same artificial arc; some could be deeper, some further out. Internodal is always to be avoided. The remaining shape does not look as natural as it could.