I found one site on the web that rates the daylilies they sell for rust, at first I thought that was a great idea. Then they mentioned that the amount of sun they were grown in had a great effect on the daylilies as far as rust contamination ,(as shade of a garage or tree, compared to mostly sun). None were immune, but the ones that got the best rating were A+, the worst was F. Yes, I thought that was a great idea, then it hit me that would have to be a very local rating system because of so many differing factors. I have seen a few short lists of varieties that were suppose to be resistant, but that may not even be true for different locations. I had even considered shopping only for very resistant varieties, but it seems now that would be impractical. It appears right now it is just a matter of trial and error, a plant very resistant in one area might be very prone to rust in another. Am I understanding this correctly?
