I have had a few that were plagued with rot for a couple of years, and then they seemed to do OK. Two of them that come to mind are Expose, and Luscious Lace. I lost all the bloom stems off them for two springs, and then they finally kicked it into high gear and made it without furture problems. I'm wondering if they might be able to develop some level of immunity over time? Others just never seem to be bothered no matter how wet it is. My purple seedling was planted in a spot where there was a leak in the gutter, and was saturated, often to the point of standing water, and it has never developed any rot. I'm curious if any of you who have it had any issues with rot with it. I think some are more able to fight it off.
Jan if you get any iries this late and transplant them, they should live in you area, but I doubt if they will bloom next spring unless they are potted and you can just pop them into the ground without upsetting the roots.