1. Pouring half water: when giving other water, there is not enough water, that is, half water. The roots are all under it, and the top is filled with water, but it doesn't seep into the bottom. The place that should be absorbed under it can't be absorbed naturally, and it can't drink water. If the water supply is not up, the blade will begin to curl. This is often the case, in the water supply, the root of its plant size estimate water demand, until the water can be added from the bottom of the basin.
2. Too much fertilizer: any plant should be supported by nutrition, but the nutrition should also be controlled to a certain extent. When the amount applied is too much, far surpassing the demand, piling up some at the bottom root will cause the root system to burn out. After appearing, you can dilute the concentration by adding water.
3. Effect of insect pest: it has the condition of curling leaves as a whole, or it may be affected by insect pest. If aphids or curling leaves spread wantonly, curling leaves is inevitable. Open more windows to ventilate, can well avoid this situation, in the early days, can also be artificially destroyed
The condition that leaves begin to turn yellow and wither may be that they can't bear the sunshine, and then turn yellow
