I just re-potted a coast live oak and while chopsticking I uncovered two patches of what I guess is rotten wood the color and consistency of mashed up banana. These sections were bellow the soil line before the re-pot. Is this normal wood rot? Is it a symptom of some sort of pest? Fungus? What, if anything, should I do about it?
I was able to leave these spots uncovered in the re-pot so hopefully clean water and air will wash it out and help it dry.