What ratio do I use to mix Dawn dishwashing liquid and water to spray rosebushes?
Hardiness Zone: 8a
By B Mattke from Fort Worth, TX
What is the reason you want to use Dawn? Is it to control aphids? Or other bugs? I think you use about a tsp. to a gallon of water if it is bugs you want to control. If it is blackspot, you are better off using skim milk.
Dish detergent in dilutions about the same as for dish washing serves as a good insecticidal soap. If you want to control blackspot, a broad spectrum anti fungal such as Daconil is best.
