Deryll said:So, if all of the people growing daylilies in warmer areas stop growing them, it would go away?
Yes, in areas where it is warm enough for it to otherwise winter over because the daylilies don't die back. But they're also the people who are primarily affected by it so it wouldn't make much difference to the rest of us. In Asia it doesn't have to be warm even though the daylilies are deciduous because the rust does its full life cycle using Patrinia. So far there are no reports of infected Patrinia plants in North America and they are not commonly grown. It's because of Patrinia that this rust can persist in very cold places like Siberia.
