I think your lack of humidity Donald would be a plus in the spread of disease. I know that I couldn't figure out how, once I had stripped off all the visibly infected foliage, how the rust still kept spreading in our very hot, dry summer weather. Then I noticed the heavy dew in the AM. Water, even from dew, can spread the rust. Since I grow in pots, I took the ones that had had minor rust and were stripped of any rusty leaves , and put them under the porch where no outside moisture could reach them. The majority of them then remained clean underneath the roof...... Then too there were those daylilies that were smack dab in amongst the rusters and never got so much as a spot on them the whole season. Yesterday Memories was surrounded by rust and remained clean. Kansas Kitten, as another example, remained spot free until late September when it all of a sudden turned very rusty (and was pitched).......BTW, I only have one daylily that goes summer dormant to the extent that all the leaves are gone. Maybe for you that and the lack of humidity does play a part in keeping the rust at bay. Add to that a modicum of rust resistant daylilies and you could be relatively rust free. Lucky Dog-lol.......Maryl
