Mildew on roses takes away their flowering potential and damages the plants. Long-term infestation with powdery mildew fungi can damage even strong roses to such an extent that the plants die. Many home remedies work against mildew, but not all of them are recommended.
Does dish soap help my roses with mildew?
Dishwashing liquiddoes not help against mildew on roses. You should avoid contact with dishwashing liquid on your plants. Fatty acid s alts in dishwashing liquid have a phytotoxic effect and damage your plants. In addition, dishwashing detergents damage the earth and the living creatures in it.
When could dishwashing liquid be used against mildew?
If you are making amildew spray solution from baking soda, rapeseed oil and water, you can add a drop of dishwashing liquid to one liter of solution. Rapeseed oil and water cannot be mixed together. By adding dishwashing liquid, both substances create a homogeneous mixture that can be used easily. Pay attention to the exact dosage of the detergent. Before spraying your roses, cover the soil with an impermeable film to protect against detergent.
Tip
Replace dishwashing liquid
Your plants are often already damaged by mildew. Additional use of detergent is then not advisable. You can also replace the dishwashing liquid with soft soap. This is one of the potassium soaps that are completely biodegradable. This means you protect your plants and the environment at the same time.
