The Casa Blanca were like that all summer last year that's why I moved them. I also have Stargazer in the same area and they have not shown any signs of this at all, not even this year so far. I'm going to try the epsom salt before I do anything at all to my soil as I have a lot of plants in that area that are very happy with the conditions that are there already including some cypripedium so I don't want to mess around with what is working.
