Cindy - ATP database does have a rust rating for some daylily cultivars, but most are not rated. I am trying to determine the number system for rust. I believe that a rating of "1" means highly resistant. I just don't know what the various other numbers would be from highly to the least rust resistant. Does the rating go from 1 to 10? Or 1 to 5? Or what? That is what I am trying to determine. I want to rate the daylily seedlings I am growing to determine what to use in my hybridizing efforts.
