Reason: Gardenia is a kind of sun loving plant. If it grows in a dark environment without light for a long time, its leaves will gradually turn yellow or even fall off. If it is exposed to the sun for a long time, its leaves will turn yellow and spots will appear.
Solution: at this time, it needs to be moved to a place where there is sunshine for maintenance. When there is a hot sun in summer, it should be shaded, or transferred to a cool astigmatism.
Cause: if the water is not properly watered for a long time, the leaves will turn yellow and have spots. If usually over watering, the root system is easy to rot, the leaves will gradually wither and turn yellow.
Solution: at ordinary times, if the amount of water is too small, increase the amount of water slowly. If the amount of water is large, stop watering for a short time, and put it in a well ventilated place for maintenance. After it recovers, reduce the amount of water.
Cause: this phenomenon occurs when the amount of fertilizer applied is too much or lack of fertilizer. At ordinary times, if the amount of fertilizer is large, there will be fertilizer damage, the root system will be burned, and the leaves will turn yellow.
Solution: if the amount of fertilizer is large, water more, let the excess fertilizer dilute away as soon as possible, and then maintain the leaves normally after recovery, and apply fertilizer frequently with thin fertilizer at ordinary times.