TYPE  HOSTS DESCRIPTION Hollyhock Rust (Puccinia malvacearum)  Hollyhock(Alcea rosea) This fungal disease causes orangish, waxy, rust/reddish raised spots on the underside of leaves and bright orange spots with red centers on the upper surface of leaves and shoots. Severe infections can cause considerable leaf drop.

Controls:

Cultural: Sanitation is the key:

Remove and destroy all infected plant parts.

During growing season keep infected leaves picked off of plants.

Remove other host plants: Lavatera, Hibiscus, and other Malvaceae.

Chemical: Use with cultural controls.  Wettable sulfur at 1 Tbsp/gal is the least toxic option.  Daconil Weather Stick can be used in home gardens if weather is wet and warm, and the disease was a problem the previous year.