Bayer All-in-One Rose & Flower Care Insect Protection: Imidacloprid Disease Protection: Tebuconazole. Kills & prevents common fungal diseases like black spot, powdery mildew & rust. Fertilizer: 9-14-9 Mix in sprinkling can and pour at plant base. 32 oz. treats up to 16 rose bushes and flowering shrubs or 200 sq. ft. of planting beds.