Hollyhock Rust

Puccinia malvacearum, also known as hollyhock or mallow rust, is a species within the genus Puccinia known for attacking members of the family Malvaceae. An autoecious pathogen, it can complete its life cycle using a single host. Plants affected by the rust include Abutilon, Alcea (Hollyhock), Hibiscus, Lavatera, Malva, Malvastrum and Sphaeralcea. Suggested control measures include sanitation (removal or destruction of affected plants or plant portions) or treatment with fungicides.