D Mc

New Guy, thanks for posting that. Truthfully, I was not going to make any further posts on this thread because it seemed so pointless. But because you made an honest attempt to inform me I will return the gesture. I never finished school so my formal education sucks but I have been working in trees for 40 years. During that time I have managed to learn a few things.

There were no wrong statements made in our previous posts. If you will go to Post #74, click on the Tree Decay pdf, please note the author is Shigo. To understand this subject, please read the entire pdf. However, at least go to Patterns of Compartmentalization and Successions, (found in the Table of Comments) find figures 40 and 41. Both of these plates show injuries that did not seal, yet Wall 4 is shown. So I can say with confidence that Wall 4 will do it's thing whether the wound seals or not.

Next follow the path of the red marker for Wall 4 and notice just how far beyond, above, below and around the circumference of the tree it has spread. This did not happen in the blink of an eye but took quite some time. During the time before the farther most cells changed to Wall 4, they were functioning as normal cells, so I can say with confidence, Wall 4 does not require callus growth to exist. But without looking at the entire tree, these comments might not have made sense.

If I ripped off a leaf from a tree and held it in front of you and said, Look trees are green! You would say no; but I woudl say, I have proof! Is not this leaf green? You say yes, the leaf is green. But the entire tree is made of many colors. I would then say, yes indeed.

When I read Sean's quote from Alex Shigo's A New Tree Biology, it almost made me cry and thought it was worth repeating. I will put part of it here:

"I am getting concerned that tree people with special interests may begin to skip over material they feel is not germane to their needs. I hope you will not do this, I caution you against this..."

D and S Mc