Larry, early spring rains and humid conditions bring on early rust. I have it, but the nasty strong winds we have had created even more damage to leaves that sorta looks like rust. It doesn't matter what the rust rating is on any plant. Only important is what it does in your garden.
I don't have much rust because we haven't had 2" of rain this month. It's been humid, but very little rain. It goes north of us and south of us. We all know that problem!
