How to prevent and control common orchid pests and diseases? These little tips are very practical

Growing orchids at home often brings various pests and diseases. In mild cases, the leaves develop spots and turn yellow, affecting their growth; in severe cases, the branches and leaves rot and the plant dies. Therefore, when growing orchids, you need to master some key points and little tips for preventing and controlling pests and diseases, which is a great help for growing orchids well. Today, the editor will introduce a few little tips for preventing and controlling orchid pests and diseases.

1. Treat black spots with an iron tool. Orchid leaves often develop black spots, which is leaf spot disease. This disease spreads quickly, and if not controlled in time, it will soon spread across the entire leaf or even the whole plant. Find an iron tool and heat it red in a fire, then aim the iron tool at the spot so that it turns from green to white. Although this is not very attractive, it basically saves the leaf. You can also use a magnifying glass under strong light to focus sunlight and burn the diseased spot.

2. Cleverly treat aphids and scale insects. Use edible vinegar mixed with water at a ratio of 1 part vinegar to 10 parts water and spray it. Spray once every 7 days, 3 times in total. This method is both convenient and safe. It not only achieves the purpose of controlling pests such as scale insects and aphids, but also can make the damaged leaves turn green again and promote the normal growth of orchids.

3. When misting orchid plants normally, you can add an appropriate amount of carbendazim or chlorothalonil to the water, which can effectively prevent and control various orchid pests and diseases. Mix powdered brown sugar and boiling water at a ratio of 1:100. After it cools, spray the orchid plants with the brown sugar liquid, once every 3 days, for three consecutive times. It has a good effect on preventing and controlling downy mildew, powdery mildew, black spot disease, and leaf blight.