I had a question similar to that but the article did not precisely address it. The fan from the rhizome was completely fallen over and not really moldy but gray looking. When I looked at the rhizome, it was perfectly white and not mushy. It was a new rhizome (Sweetly Sung) planted in the fall from a reputable vendor. In a panic, I began to dig it up after reading the article thinking it had crown rot but the roots were so thick it was hard to do. As I dug around, I saw two tiny increases coming on. So I lightly pushed it back in and left it. Now I think I ruined the increases and still do not know if it has crown rot and will infect my whole bed of new plants. Any ideas?