Neal, I can't say that any of my Austins are more disease resistant than others. They all seem equally resistant (or non-resistant) to me. There's no rust or powdery mildew in my garden, so black spot is the only problem here. It affects every rose in my garden, with the exception of Ping Lim's roses and a few of Ralph Moore's. All of the Austins appear to be equally vulnerable to black spot.
