Collar Location

Gunslinger

Where exactly would the collar be on this dead limb?



Would it be at the tip of the arrow or more to the left?

Knotahippie

I cut to the edge of live callus...can't really tell if the arrow is pointing at live tissue.

Garry Brockley

If it was me i would cut right of the line as it's the most identifiable point.

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Gunslinger

That's what I thought but if you look closely there seems to be two distinct points where the limb gets smaller around it's entire circumference. I agree that where the red line is that you inserted seems to be the most likely place where the collar ends. It's at the point where the 45 degree section meets the straight section..

Eric Frei

I'd go with Galbee's cut too.

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newguy18

Galbee's cut is spot on.

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Gunslinger

Thanks guys.

treeseer

If there is live tissue distal of Galbee's cut, then it is a flush cut. It appears that the collar has moved, and so has the proper pruning location.

I'm with Knot on this one, but no way to be sure without seeing under the bark.

newguy18

Have you been drinking again?

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old schooler

Knotahippie

I have...chocolate milk and beer. mmmm

Eric Frei

Well, how does it work for normal live branches that we all trim on a daily basis then? Whether the section to the right of Galbee's red mark is live or dead is irrelevant for the hypothesis of where to collar cut.

The question is, where is the true collar?

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TrevMcRev

If live tissue has enveloped out to the white arrow i'd cut there. At least go close to that first & if not live, back to the red line.

treeseer

Exactly. Eric, are you looking for a single, unchanging, "true" collar? There is no such thing--the collar moves out as branch and stem tissues continue to overlap. Only if that tissue is really feeble or damaged or infected should the cut go back to a former collar location.

Eric Frei

I'd go with this but personally I dont think that little extension is what you think it is, I think the first cut at the right will reveal decay, but I could be wrong as it depends on the tree.

I know collars move and extend, however looking at that pic I have doubts as to what is going on there.

This is more the sort of thing you'd expect to see.

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treeseer

agreed; looks like feeble callus growth or ?

maybe the poster can make cross-sectional pics?

Eric Frei

It's tough in picutres ... even video when pruning. The hard part is getting the 3D aspect, so often before and after pruning pics pay no justice to what went on.

Anyway, looking at the picture I have put a yellow line where IMO a flush cut would be.

Now look at the other limb and look carefully at the area I have highlighted in green (refer original if you like). It also has a little bit of change there, subtle but there.

Today I took a little time out to look over quite few similar things in roadside trees, hmmm, not a lot of luck but found a pretty dead looking tree I have to report to council before it falls over.

The eucs here get very distinctive collars, some of the others like Jacaranda's become tricky though.

Do you remember that cut we played naughts and crosses on Guy?

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Garry Brockley

I'd agree with Ekka here.

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TrevMcRev

I would have a nibble first at the white arrow and then if you're right then just go further to the red line. No harm done. But if you're wrong at least you can stop there, and not do more harm than good.

Those extended collars are way more obvious on Eucs than things like oaks etc.

You cant put it back

TrevMcRev

Also, perfect cuts on paper are one thing, executing them with a saw to perfection is another

Eric Frei

Most would cut off well past that first leaving a small stub to clean up so little chance of bark tearing.

Bottom cut first, top cut next till branch falls.

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newguy18

I'd still go with Galbee's cut,beig quite famialier with alot of oaks to me that looks like the collar,I'm sure if a pic were taken from the otherside of that limb it would be a little more obvious.

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old schooler