Protect your plants from disease with Safer® brand garden fungicide. This ready-to-use spray prevents and controls fungal diseases, including powdery mildew, black spot, leaf spot and rust. Fungal diseases can quickly spread from one plant to another, wiping out an entire crop. This unique formulation is gentle on plants when used as directed and can be used until the day before harvest. It's also OMRI Listed® for compliant use in organic gardening.