Re: how much rot is acceptable? Tomograph readings have shown that the Anne Frank tree is about 70% hollow.
I'll have to agree to can this poll. VTA assesment tells us that a tree is still safe even if it is 70 % hollow or infected. So terminology of wood being gone is not always correct. Out here, too many beech trees fail because of being infected with ganoderma adspersum and then the wood is certainly not gone when the tree fails. Rotten can be the correct word in this case.
Rotten/infected/decayed/hollow are very different things in treecare.
Would I leave a severely rotten or hollow tree alone? Depends on the surroundings and what it could inflict.
So the decision would be based on:
-kind of tree
-dimensions
-surroundings
-significance
-structure
-health
-possible counter measures
-... |