The growth of Commelina grandiflora needs enough light to make it colorful. If its environment is too overcast, it will lead to its lack of vitality. But it can't be exposed to strong light, or it will cause the leaves to be dim and the plants to become small. Therefore, in its growth period, in addition to the summer around noon to shade, other seasons should provide it with sufficient light.
It is suitable for growing in fertile and moist soil. If potted, rotten leaf soil and peat soil can be used as potted soil.
The most suitable temperature for its growth is 18-30 ℃, and the overwintering temperature needs to be kept above 10 ℃. When the temperature drops below 4 ℃ in winter, it will go to sleep. When the ambient temperature is close to 0 ℃, it will die of frostbite.
It has a certain degree of drought resistance, so it can grow even without watering for a long time. But keeping the basin soil moist can make it grow better. Therefore, water the soil to make it slightly wet without drying. In winter, water should be controlled to keep the soil dry.
In the growth period, it needs to be treated with nitrogen, phosphorus and potassium once every 1-2 weeks, not only one fertilizer. After September, the application of nitrogen fertilizer can be stopped and only phosphorus and potassium fertilizer can be applied to ensure that it can survive the winter safely. Fertilization should be stopped in winter.
