How to prevent and control powdery mildew on roses? Oleander has a clever trick

In spring, roses are prone to powdery mildew. After the disease develops, a layer of white powder appears on the leaf surface, seriously affecting the normal growth and development of the plant. Oleander is very effective at preventing and controlling powdery mildew on roses.

The specific method is:

1. Crush fresh oleander leaves, soak them in clean water in a cool place for 1-2 days, without letting them ferment or spoil, then use a gauze net to filter out the crushed oleander leaves, and spray the remaining water with a sprayer onto the affected parts of the roses for 3-5 consecutive days, for a good effect. You can also soak the diseased branches and leaves directly in water made from oleander leaves for a moment, which also works well.

2. When oleander is in full bloom, take its fresh flowers and crush them into juice, then apply and rub it onto the diseased branches and leaves of the roses; the effect is also very good.

3. Collect the fallen flowers and withered leaves of oleander, compost them until rotted, and use them as fertilizer applied into the potting soil of roses. This can make the roses grow vigorously and prevent powdery mildew.

4. Place potted roses under the shade of oleander flowers, or place potted oleander among the roses, and the roses will not develop powdery mildew either. Oleander flowers and leaves are highly toxic, so people and livestock should be prevented from being poisoned.