Thanks, Cindy, I'm so glad I mis-read that bit, as it seems that rust is slowed around 90 and above, and that research result may well confuse (or possibly clarify) the idea of whether heat is a way to control or kill off rust. Even more reason to clarify ahead of any further internet transmissions whether that means it is possible that it is truly killed off at some temp, like we hear is sometimes the case with certain winter conditions, or just slowed, etc. I well remember not long ago that we were also hearing from some (and still see on some internet sites) that daylilies were "developing immunity" to rust and that there was only one strain of daylily rust ... perhaps these internet memes are other related topics that ATP members can support with discussion and sharing between gardeners in its more open forum?
