1. Reduce wateringReason: Forsythia is afraid of waterlogging, especially in the rainy season or when there is too much water and it cannot be drained in time, its roots cannot breathe normally and the leaves will turn yellow. Solution: Water in moderation, and do not rely on your feeling. If you water too much, you can expose the plant to the sun after watering. It is best to check the condition of the soil before watering. If it is relatively moist, you do not need to water it yet. 2. Change the soilReason: Forsythia is usually grown outdoors and may be often exposed to rain. If the soil used is relatively sticky and has poor air permeability, the accumulated water cannot drain away and its roots will not be able to breathe normally, which will affect the leaves and cause them to turn yellow. Solution: You can replace the soil with better air permeability, put some coarse sand at the bottom of the flowerpot, or update the soil in time after it has rained to maintain good air permeability. 3. Reasonable fertilizationReason: It generally requires more fertilizer during its growth period. If there is insufficient nutrients, its growth will be affected. Solution: Apply fertilizer reasonably during the breeding process. The amount of fertilizer applied will be different under different growth conditions. Apply nitrogen fertilizer once before flowering and apply top dressing once after flowering. 4. Remove pestsReason: Pests and diseases may appear during the growing season, which will harm the leaves or even directly cause the plant to not bloom. Solution: Use pesticides to eliminate pests and diseases in time, and perform reasonable pruning to reduce the chance of pests. |
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