I see evidence of at least three fungi there. The center was originally attacked by the brown cubical rot, but when it died, the red crumbly rot took over. What likely actually killed the tree was the laminated root rot, which is evident in the remaining sapwood and the stain in the log on the mill. Note that the brown cubical rot seldom kills trees except by accident, the red crumbly rot is a decay fungus that only sets in after the tree is dead, and the laminated root rot can kill a healthy tree in a matter of weeks. Autopsying trees from the stumps and logs is essential in understanding the dynamics between trees and their associates beneath the soil; a healthy tree may show no evidence of disease hidden deep within the bole, while a dying tree may show symptoms of something other than what's killing it. The post-mortem is where all the pieces come together into a clear picture.
How can I tell the difference between brown cubicle rot, (called heart rot in redwoods) and red crumbly rot?
Last edited: