Ortho RosePride Disease Control Concentrate, 16-Ounce (Not Sold in NY) Ortho Rose & Flower Disease Control Concentrate 16oz Controls and prevents black spot, rust, powdery mildew and other listed diseases Foliar spray - Starts working within hours Systemic action - can't be washed off by rain once dried Not Sold in NY Ortho rosepride disease control concentrate Controls and protects against all major rose diseases Endorsed by the American Rose Society Controls black spots, rust, and powdery mildew on roses and other ornamentals Leaves no unsightly residue on foliage or blossoms