Don t over fertilize your plants. Garlic is naturally high in sulfur and is an effective powdery mildew treatment.
Use a milk spray.
How to get rid of powdery mildew on outdoor plants. Allow this mixture to set for 2 days. Pour the mixture into a sprayer and spray the entire plant evenly at night. Prepare a solution with one part of milk for every four of water and apply it in a foliar spray throughout your plant.
Do this every 10 14 days to get rid of powdery mildew as well as prevent it. Apply a mixture of water with milk in a foliar spray. Ensure there is enough spacing between your plants to provide enough airflow around all parts of the plant.
Use a 40 60 ratio of milk to water and spray plants evenly. The solution should be applied both on the surface of the leaf and on the underside and it is recommended to apply it in full sunlight. Simply get the paper towels wet and gently wipe your infected leaves with them therefore removing the mildew that is already there.
One way to prevent powdery mildew is to plant mildew resistant plant varieties. One of the easiest ways to treat powdery mildew is to mix 1 tablespoon of baking soda 1 2 teaspoon of liquid dish soap and 1 gallon of water. If that isn t an option though here are some other steps to take.
Remove infected portions of plants to start use plant clippers to remove or cut back the portions of your plants that have visible powdery mildew on them. Mix 1 tablespoon of baking soda and 1 2 teaspoon of liquid soap in 1 gallon of water. If you are looking for an extremely simple way to get rid of the powdery mildew you should give the tap water paper towel method a try.
Mix 1 part milk to 9 parts water and spray on plants showing signs of powdery mildew. Studies have shown that milk is effective in slowing the spread of powdery mildew on plants that are already infected. If you notice it on a few leaves remove them from the plant and do not compost them which can still allow the spores to spread.
Once set strain the mixture retaining both the liquid and the crushed garlic. Spray the mixture on your plants. To make a fungus killing solution crush 6 cloves of garlic and mix with 1 ounce of an organic oil and one ounce of rubbing alcohol.
Mix 1 tablespoon of baking soda in a gallon of water and add teaspoon of liquid soap.