Hello, What more can I do about hollyhock rust? I cut off the lowest leaves around June 1. On the plant pictured, the rust spread even more. The other hollyhocks have some rust, but not nearly as much. They are on a rocky slope facing East, with some shade from pine trees. Every year, some rust appears, but this seems to be the worst ever. Due to rain? Can I wait for all to bloom? Do I remove this one plant entirely and burn it? How can I try to prevent this next year? Please see photo attached. Thank you.