1. Disease problem(1) Specific reasons: There is a disease that everyone must have heard of, called "black spot disease". As the name suggests, when the plant becomes diseased, some black spots will appear on its leaves. If the disease worsens, these spots will gradually expand and the leaves may fall off. Eventually, the entire plant may be affected. This disease mainly occurs in places that are hot, humid and poorly ventilated. This disease can occur throughout the year, but it is more common in hot weather and poorly ventilated areas. (2) Solution: First, we need to remove the fallen leaves and diseased leaves to avoid worsening the condition. In addition, we can spray some pesticides for prevention and control. For example, meperidine is very effective. Also, if conditions permit, the soil can be disinfected. Then there is daily watering, which also requires attention. When watering, water along the edge of the pot. Don't over-frequency. Also, it is best not to water at night to prevent the growth of pathogens. 2. Watering problem(1) Specific reasons: Sometimes, some water may accidentally splash onto the leaves. Then, when exposed to the sun at this time, black spots may form. (2) Solution: Be careful when watering, and it is best to water along the edge of the container. Don't go too fast and try to avoid splashing the leaves. If it is accidentally splashed, wipe it with a dry cloth. 3. Normal phenomenonSometimes, black spots on the leaves of a plant are a normal aging phenomenon and no special treatment is required. |
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