Strobe 50WG (Heritage) Fungicide - 1 Pound. Strobe 50WG is a broad spectrum preventative fungicide with systemic and curative properties that is used for the control of many plant diseases. Allows maximum control length on the market - 28 days! DISEASES CONTROLLED (BUT NOT LIMITED TO) INCLUDE: Anthracnose Brown patch Downy mildew Gray leaf spot Leaf blights Leaf spots Necrotic ring spot Powdery mildew Pythium blight Rust Snow mold Summer patch Take-all patch Zoysia patch.