What is the problem with the yellowing and black spots on the rose leaves? How to deal with the yellowing and black spots on the rose leaves

Roses are very common in our daily life. Many people like to plant some roses because of their gorgeous flowers and their effects of promoting blood circulation, regulating menstruation, reducing swelling and detoxifying. However, when planting, they often encounter the problem of yellowing and black spots on the leaves of roses. So how to deal with yellowing and black spots on the leaves of roses? Let's take a look.

Why are the rose leaves turning yellow with black spots?

Black spot disease is the most common disease of roses, and another is powdery mildew. Generally speaking, dense branches and leaves, lack of ventilation, and rain on the leaves are the main causes of black spot disease. Black spot disease is most common in summer, so everyone should pay attention to prevention and treatment.

How to deal with yellowing and black spots on rose leaves

1. Cut off diseased leaves to reduce overlapping infection and pathogens.

2. Use garlic oil to speed up the spraying with water, once every two days, and once every three to five days if there is improvement, or you can use flusilazole;

3. Spray foliar fertilizer to enhance plant nutrition and resistance.

How to prevent rose leaves from turning yellow and having black spots

1. Remove the leaves and branches infected with pests and diseases in time;

2. Proper pruning can enhance ventilation and lighting for the plants;

3. The distance between plants should not be too close, and ventilation should be enhanced;

4. Avoid watering at night. Try not to spray water when watering, but water from the edge of the pot;

5. Try to keep the leaves dry and fresh to prevent bacteria from infecting them;

6. Spray with fungicide once every ten days when new leaves grow during the growth period to reduce bacterial infection;

7. Change the soil every two years and apply sufficient base fertilizer.