This is a powdery mildew treatment that will work on your rose plants, (and other flowers as well), and the best part is, it is easy to make yourself, and.... it works!
Powdery Mildew is an unsightly fungus that coats the leaves of the plants.
This is best used as an occasional fungus preventative on your plants.
Some plants do not like repeated applications of oil.
This easy to make recipe for Powdery Mildew Treatment requires only two ingredients, (plus warm water)
The first is Baking Soda, something you most likely have in the house.
The second is something I always have, because I clean my wood floors with it.... Murphys Oil Soap. (Which works wonderful on wood floors by the way!)
Here is the simple recipe;
You will need;
1 gallon of warm water
3 Tablespoons Baking Soda
1 Tablespoon Murphys Oil Soap
The simple recipe;
Mix the Baking Soda and Murphys Oil soap in the warm water, stirring well.
Spray the solution on both sides of the leaves as soon as you spot this disease. (Gray coating on the leaves)
The best time to do this is in the Spring (very early Spring) as a preventative, every 7-10 days, until the day time temperatures reach around 70.
When I notice this on my rose plants, I remove infected leaves, and spray with this solution.
It is hard for powdery mildew fungus to grow in a high ph; thus the baking soda which alters the ph of the leaves.
The Oil soap allows the mix to spread more evenly and makes the solution stick to the leaves, so it doesn't easily wash off, making it more effective longer.
Another Recipe for treating this fungus;
1 Tablespoon Baking soda (or) Potassium Bicarbonate (sold in garden centers)
1 gallon warm Water
1 Tablespoon horticultural Oil
Mix all ingredients together, stir well.
Spray plants (including undersides of leaves)
Note: Baking soda treatments such as these also treat Black Spot fungal disease!
Baking Soda (or) Potassium Bicarbonate is a wonderful organic spray to use in fighting mildew and black spot. It is simple and effective!
You just might want to mix up a quart of water with a teaspoon, label it, and keep it in the garden shed, ready to use in the garden when needed.
Which ever powdery mildew treatment recipe you use, start spraying susceptible plants before the problem starts!