ROSE SPRAY-helps prevent diseases such as rust, blackspot, and powdery mildew. Mix together: •1-tablespoon baking soda •1-teaspoon mild dishwashing detergent •1-tablespoon vegetable oil •1 dissolved aspirin Add: •1-gallon water Mix together and pour into a spray bottles. Spray roses every 1-2 weeks.
Intensive Gardening: Grow More Food in Less Space (With the Least Work!) - Organic Gardening