treevet

You did a very good job of explaining yourself but I have a few questions. Not verbatum, but you say "heartwood, deadwood, nothing going much here, not doing much, no live cells". The first growth rings store carbohydrates, they take them in and release them for use. On page 48 of A New Tree Biology a red oak with a shot gun wound (sudden injury), wall 2 showed inward spread resisted but a dark band of discolored heartwood surrounding the decayed wood outside the heartwood and the new growth rings, acting as a defense boundary is apparent. Shigo's quote "heartwood does compartmentalize.

You mention no chemical boundary ( or maybe once), and you assert wall 4 grows, leaving one to assume you mean the woundwood or rams horn ( uncontained cells). Interesting note, In New Tree Biology no mention of woundwood, then, later, in Modern Arboriculture there is. I m sure subsequent research revealed the difference btwn callus and woundwood (lignen, etc).

Your assertion seems to be wall 4 is only created by uncontained (unpressured cells) and chems are not involved and this is callus and callus is an annual growth that forms closure and sometimes rams horns?

You mention "They found" . Are you basing your knowledge on someone other than Shigo s? Can we search them?

Research shows callus grows in only the 1st 3 to 5 weeks, then some cells differentiate and become lignified to form woundwood.

I still think callus is part of wall 4 and it's and other reactive chemicals across the span of the wound developed by heartwood and possibly traumatized cells dieing on the face of the wound are the wall. All the closure is just life going on (or not).

PS. after watching your vid I thought you started another thread about your video?