White Rust Treatment How To Prevent White Rust Fungus
White Rust Disease – What is White Rust? What is white rust? It’s a disease that causes distinctive chalky white spore masses sometimes referred to as pustules that first show up on the underside of leaves. These blister-like masses, called sori, form under the leaf’s dermis (skin) and can’t be scraped off without damaging the leaf. The stem and leaves can become twisted and deformed. White rust disease can and will infect the floral parts as well....