It may fall because the weather is not suitable for its needs, the surrounding temperature does not meet its growth requirements, its leaves will fall
To put it in a relatively cool area for slow seeding, it needs a temperature of about 20 degrees in the daytime and about 18 degrees in the evening. In midsummer, it is better to control the temperature around it to below 27 degrees. If the temperature is particularly high, sunshade it, and spray water on its leaves and nearby. It can't be allowed to have a temperature lower than 8 degrees when it is through the severe winter, otherwise it will be frostbitten

Although this kind of plant likes light, it can also tolerate cloudy days. If it is often put in strong light or often in dark areas, its leaves will fall easily.
To grasp it as soon as possible to move to the semi overcast area, give it slowly adjust the temperature, do not suddenly have a big temperature difference, it is best to let it in the balcony or the window to receive astigmatism, in the winter time can put it in the relatively high-lying area, let it receive more light.
It likes wetter areas. If the moisture content in the air exceeds 85% or 70%, it will not be enough. If the air is too dry, it will drop leaves.
If it is placed in the home, you can often use clear water to spray it, you can increase the humidity, so that its leaves can maintain shape

This kind of plant grows rapidly, so it needs enough nutrients to ensure its growth demand. If it doesn't have enough nutrients in its growth period, its leaves will fall because of the lack of nutrients and can't maintain the basic physiological demand.
To use nitrogen, phosphorus, potassium and other fertilizers to add fertilizer to it, or to use relatively low concentration of fertilizer water instead of water in ordinary times
