How and with what do I process roses so that the flowerbed always looks great

I have been growing roses in my flower bed for over 10 years. Despite the variety of varieties, all roses sooner or later develop a disease called powdery mildew. It is manifested by the appearance of white spots on the leaves, in addition, the leaves turn yellow at the edges. Typically, the veins of the leaves remain green. As I found out, this disease is caused by fungi.

I tried many options and identified the 3 most effective for myself. The undoubted advantage of these tools is that you can cook right at home from available tools.

To prepare the first product, you will need: tar or laundry soap, baking soda. Grate the soap (1 tsp. l.). Pour 4 liters of water into a container, 1 hour. l. baking soda and grated soap. The water must be warm so that the soap dissolves well.

The second tool: dilute 1 gram of potassium permanganate in 3 liters of water. A pink solution should form. It is better to make a new one before each use in order to preserve all its properties.

The following remedy consists of serum and water in a 1: 1 ratio. For convenience, you can use a spray bottle.

It is important that at the time when you will process roses, the weather must be dry and cloudy. Because the combination of direct sunlight and means to combat hand dew will not only not improve the condition of the leaves, but can also lead to their death. If it rains after treatment, it must be repeated. Preferably in the same dosage as the first time.

Here are the results I got:

The first remedy was used for seven days. One treatment every day.

The second remedy was used for three days. It is better to process the leaves twice a day, in the morning and in the evening. If, for some reason, you were unable to process roses for three days in a row, it is worth repeating the treatment.

The third remedy was used for three days.

The result is obvious. What do you think, is it better to process roses with a purchased product or prepared at home?