Joe Banks wrote:When I planted cedar posts for grape vines, I used something I read out of one of Eric Sloane's books. The topmost end of the post is charred, then planted in the ground. Plant it upside-down. The reason for this is that the tree's natural capillary action draws water from the base, not from the crown. Charring just helps close the pores of the wood more.
I've heard that used motor oil preserves wood cheaply (and how) but I've never tried it.
Mike Haasl wrote:Haven't tried it but it sounds pretty cool. I'm not up on my chemistry... How would one implement this to test?
The reason for this is that the tree's natural capillary action draws water from the base, not from the crown.
Jordan Holland wrote:I remember reading that sap/water flows both up and down the trunks of trees. I remember reading that the old phrase "saps a risin'" for expressing the time to tap maple trees is actually backwards as the sap is actually flowing downwards.
Glenn Herbert wrote:I think a major reason for putting posts upside down relates to driving them in; the small end going in first will be easier and make the newly driven post more solidly set. There is also more thickness at the top for striking with a maul. If setting in a dug hole and backfilling, I would probably put posts base down for greater strength at ground level.
I agree about sap flow; it flows both up and down in the live trunk.