white fuzz...not mold
Doug says he's having trouble - white fuzz?? Could be botrytis, could be powdery mildew - could be sclerotina (a white mold) that produces fuzzy white patches after (usually) creating a water soaked looking area. Common on lilies and other ornamentals. But you say "not mold" so I'm not sure how you know it's not a mold.
Sorry - not a good enough description of the problem to really help out.