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Phosphates
Add 1 Tbsp. of phosphate salt to a gallon of water containing about ¼ to ½ tsp. of liquid soap or detergent.
Diseases Controlled
Powdery mildew; rust; leaf blight
How Often to Apply
Every 12-15 days
Precautions
Spray small area first to check for plant damage. Wait at least two full days before treating the entire plant.