Rust score for me is a 1 in my zone 6b garden. However, I noticed that the AHS score is 4.8 (shows susceptibility).
I had 'Little Grapette' once but I got it from a big box store and I think it was a dud for some reason because it never flowered. That means I don't even know if it was correctly labeled so haven't commented on it in the thread.
But I just wanted to mention, Vickie, that the rust scores on NGA are not from the AHS, they were compiled by an NGA member from various studies. The "shows susceptibility" or not row is separate from the numerical rust rating and reflects the opinion only of the last person who edited that line. I would say shows susceptibility is somewhat more reliable than shows resistance in that box.
In 6b I assume you only get rust when you buy it in on new plants? In the normal course of events and generalizing, daylily rust doesn't reliably winter over in colder areas of zone 7 and should not do so in colder zones.
