Here in Maryland we usually don't have to worry much about rose rust, but the infamous humidity makes for very high blackspot and mildew pressure. In spite of this, and without any spraying, 'Home Run' has been really impressive for it's health and continuous bloom. The first picture is the ugliest foliage I could find on it. This time of year most roses here will have been reduced to a bunch of sticks with foliage only at the tips. The second picture shows the overall state of the whole 'Home Run' bush. I didn't prune at all this past Spring, so it's kind of gotten a little overgrown. But just look at all the spent flowers all over it.