Most of my Japanese irises are infected with some kind of fungus this year. I don't have any experience treating iris foliage that's affected like this, and don't know if it's hopeless at this point. Does anyone have any advice? I would appreciate it so much!
Asked Matry & Jan at Joe Pye Weed garden. They say that they would need a photo so please post at their website [email protected] & they will take a look. Jan says that Japanese usually don't get fungus.