Mattbonsai

I took a while pondering this problem, Several things, ya don't want the rots to spread as it could disfigure the tree quite severely, but then the tree should be kicking in place its CODIT System, CODIT, or the Compartmentalisation Of Decay In Trees is where the trees put in place natural barriers to stop the spread of decay, there are four walls which the trees put up, Veritcal(Xylem / Phloem), Inwards (Growth Rings), Sideways (Rays of Growth seperating the rings into sections), and outwards to prevent reinfection (where the Cambium and new bark grow over the site of infection).

This system should stop it going up into the trunk, the fact that there are healthy roots on the outside suggest that the 2nd and last walls have worked to allow the outside to be healthy, but the vertical and sideways walls are failing.

I'd be tempted to say to carve out as much rot as possible and then seal the fresh wood to help the tree, I'm not sure how the tree would react to an Epoxy in the roots, but as long as its just inside the large roots, and not near the fine roots there shouldn't be a problem, as the large roots are just used for storage and transport of water.

-Matt-

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