The fertilization of water lily needs to be carried out step by step. It can't be done in a short time. Too much fertilizer, especially nitrogen fertilizer, can cause leaves to turn yellow. When fertilizing too much, we should do a lot of overflow treatment to dilute the fertilizer.
Lack of fertilizer will also lead to yellow leaves, if lack of fertilizer should be applied in a timely and reasonable manner, before planting, a small amount of rotten soybean bran can be added to the pot soil as the base fertilizer.
Lack of light may cause the leaves to turn yellow. Because the leaf can't carry on photosynthesis normally, the chlorophyll synthesis will be affected and then cause the leaf to turn yellow. Therefore, to ensure its sufficient sunshine duration, it should be placed in the position where it can be exposed to the sun, and change its position in time according to the change of the sun. To ensure adequate light, but also to avoid the sun exposure, the afternoon must be strong.
When the temperature drops sharply or the temperature difference is too large in winter, the leaves of the water lily may turn yellow. When its leaves turn yellow due to the problem of too low temperature, it is necessary to take heat preservation measures in time. The container for planting plants must be filled with water. It is better to cover a layer of plastic paper on the container mouth to avoid frostbite. When appropriate, open the plastic paper for ventilation. If necessary, it can be moved to a room with suitable temperature.
