1. The light is too strong. Smooth sailing. I like light, not strong light. It should be semi-shaded. In the shade and strong light environment, it will grow poorly, and the leaves will be curly and yellow.
2. Insufficient humidity. Smooth sailing requires the air humidity to be between 70-90%, and leaves below 50% will appear yellow leaves, scorched edges, rolled leaves and withered.
3. Improper watering. Watering is mainly dry and wet. Don't always get the soil wet, let alone dry it. It is better to be wet, because smooth sailing is not drought-tolerant and waterlogging-tolerant.
4. Pest hazards. The main pests and diseases are red spider, scale insect, leaf roller and so on. The prevention and control is mainly based on manual capture, followed by spraying. It can also be used for environmental protection applications such as spraying pepper water and cigarette butts.