Using oleander to prevent and treat rose powdery mildew
An article on green plant knowledge, introducing the content about the oleander in the flower clinic. Using oleander to prevent and treat rose powdery mildew, keep reading!
In spring, roses are prone to powdery mildew, and after the onset of the disease, a layer of white powder appears on the surface of the leaves, severely affecting the normal growth and development of the plant. Using oleander to prevent and treat rose powdery mildew has good effects.
The specific methods are:
1. Crush the fresh leaves of oleander and soak them in cool water for 1-2 days in a shaded place, preventing fermentation or spoilage. Then, filter the crushed oleander leaves with a gauze and spray the remaining water on the affected parts of the roses with a sprayer for 3-5 consecutive days, which works well. You can also soak the diseased branches and leaves directly in the water made from oleander leaves for a moment, which also has a good effect.
2. When oleander is in full bloom, crush its flowers into juice and apply it to the diseased branches and leaves of roses, which also works well.
3. Collect the fallen flowers and withered leaves of oleander, rot them, and use them as fertilizer in the pot soil of roses. This can make the roses grow vigorously and not develop powdery mildew.
4. Placing potted roses under the shade of oleander flowers or placing potted oleander among roses will also prevent roses from getting powdery mildew. The leaves and flowers of oleander are highly toxic and should be prevented from causing poisoning in humans and animals.
The detailed content introduced above about using oleander to prevent and treat rose powdery mildew, hoping it can be helpful to you!