Yes,
Maybe proper pruning wasn't the best name for this thread...
and I learned this approach to handling large limb removals at the customer's insistence, after hearing Guy Meilleur give a talk about correcting storm damaged trees.. I thought.. well.. what's the difference between a storm tearing a big limb in half and the customer insisting that the limb be removed to let light into the garden... NOT MUCH to the tree.. if its better to leave a stub on a storm damaged limb, and the customer will allow the limb she wants removed to be left at 10-15', then why not leave the limb as we would do if it was storm damaged..
That tree will never "callous over" a 12" cut, even if made at the lateral that is 1/3 diameter of the parent stem.. NEVER.. and also note that "callousing over" does not stop decay.. And a cut at the trunk of that size would shorten the life of that tree by 20-50 years or more.. as well as create an imminemt hazard..
So I'll keep an eye on the tree..
Guy Meilleur goes by "treeseer" here and on other forums.. he's a board certified master arborist (one of the first to revieve that title), consulting arborist, as well as author of numerous articles, and is frequently asked to present at the ISA international symposium, etc..
Here is Guy's respopnse to the video:
Mr. Murphy,
Thank you so much for sharing your excellent work. I am humbled and gratified that you cite my work as support for your tree preservation strategy. For all the unpaid hours I have spent on reviving Shigo et al's work on nodal pruning, seeing your work and hearing your approach makes it all worthwhile.
It looked from the appearance of previous laterals that were shed at that node--that "imperfection" a sign of bundles of buds and other stem cell tissue, aka "concentrations of vitality" as ISA President Colin Bashford calls these nodes-- that you found a good target. Whether or not those buds release is in part a function of how much light they get. It seems from your video that morning sun will hit it. Sometimes I thin/reduce above those cuts per need to let more light in.
Please keep me up to date on the tree's response. I await pics of sprouts like a child awaits Christmas!
Guy Philip Meilleur
ISA Board-Certified Master Arborist #SO-0284BMUT
ISA Certified Tree Worker & Utility & Municipal Specialist
Better Tree Care Associates