That was always my claim.
But back to trees...
Sorry about my confusion regarding type of tree. The best and my last info is the levels in the pit were 6" spruce. If memory serves this is what the Truro auger established they bored through the 98? ft levels going into the "room".
Didn't know I took pictures of oaks - thanks for the ID. The point was growth can happen even when trees are cut.
Christmas tree regrowth - the theory is weakest here. I once read of someone urging tree farmers to NOT pull their stumps and instead encouraged stump culture as trees would grow faster and be ready for market quicker and therefore make more money. The question is how often does this occur naturally?
Not sure why it's even a question.
Pine I've seldom seen anything grow from a stump.
I've seen pine in ancient stumps due to the decay making a giant stump like a planter pot .
Not the same.
Tree rings.
Your oldest cross section on a site is a record. Ring numbers only indicate age .
You're trying to grow a tree on a stump to argue what the rings should indicate for age? While you work on the Franken-theory of silviculture, let's revisit that oldest tree on site. Make it two for duplicity's sake.
What we have isn't just an estimate of it from cross section or bore hole . (Hey lets kill it or at least introduce infection some how ya know?) we also have a record of climate. See the light wider gapped ring there between tight dark rings ? That was a wet warm season of great growth in between two dark cold years . And look , several years later again.
The 6 inch post you place in a pit are long gone or mush by now. How else were they preserved in the wet ground?
Out better example of durable timber to bury in that era is what? And what lifespan average was expected based on example?
Now If by some miracle , aliens or divine intervention you presented an intact core sample or cross section of a post out of your suggested hole , we could then compare it to know samples above ground.
Compared to the oldest sample only outer rings equivalent to the younger stocks age would be of note. But still show variation due to amount of light and such. Major events would still show.
Anyone boring the earth and declaring wood cores were being made would have to convince me better than simply saying so.
I've cut from trees and played with many a post.
A six inch tree is a much smaller attempt at a timber when the sides are knocked off.
And if the sides re not knocked of a pine then don't bury in in the hopes of it's integrity lasting long.
Then it needs to be dried how long to retain it's shape if kept dry? (Don't soak it or it'll become pliable. And pliable below how much soil atop? = the shape of the letter U.
A ships carpenter might have some decent timber stashed for repairs.
Best to leave it alone , as it is to repair the ship and where is the ships home port?
There were folks elsewhere at least that cruised timber, hunting ships masts .Like most elect timber much time and effort went into selections and treatment after kills.
Have you killed cut seasoned and burned softwoods?
If so the why likely wasn't because you had acess to hardwoods instead.
But with the softwoods you learned to knock a slab off the side of each round at least. Keep it dry (out of rain/snow) and off the ground.
None of what you mentioned in your accounting of buried posts.
Study treatment of softwoods in your chosen era. to attempt below ground preservation. Then types of wood.
Then form of type. (Whole round posts? Peeled posts? Squared posts? Dried after whatever worked posts? Or green posts?
Then how much time would be required. Include any drying time or preservation method times.
But tossing six inch green pine rounds in a wet hole as a floor/buried roof over hole below , to hold much weight would be a lesson in disappointment pretty quick.
And how long do you figure the original legends posts retained their integrity in such conditions?
Tree rings and the very slight potential second growth may occur off a pine stump, pale in comparison.
,
lviculture
HMMMM 
