1. Increase the temperatureReason: The environment with too low temperature makes it difficult for orchids to grow, resulting in yellowing leaves. Solution: Place the plant in a bright and ventilated place, in an environment of 18-23℃, and keep it at 5-10℃ in winter. 2. Proper shadeReason: Orchids grow vigorously in sunlight, but cannot be exposed to direct sunlight, otherwise the leaves will turn yellow. Solution: At noon, place the plant away from strong light such as windowsills; at other times, place it in a warm and bright place to ensure a certain amount of light exposure. 3. Dry the soilReason: Orchids are suitable for growing in relatively dry soil. If the soil in the pot is too wet for a long time, the leaves will turn yellow. Solution: Do not water too frequently, water thoroughly at one time; wait until the soil is no longer moist before watering again, and place the plant in a ventilated and dry place. 4. Choose decomposed fertilizerReason: Unfermented cake fertilizer or pure phosphorus fertilizer was added during fertilization, causing the leaves to turn yellow. Solution: Choose well-rotted fertilizer to prevent "over-fertilization" from burning the roots of plants. |
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