1、 Improper temperature

In the winter of the previous year, if the temperature is not well controlled and the temperature exceeds 12 degrees, it will easily make the seedlings sprout prematurely. In this way, it is not conducive to its flowering in the second year. Therefore, in winter, pay attention to the change of temperature, and the overwintering temperature should not be too high

2、 Improper fertilization

During its growth, it needs all kinds of nutrients to promote its growth. If too much nitrogen fertilizer is applied, it is easy to make the stems and leaves grow madly, but the flowers will bloom less or do not bloom directly. Not only too much nitrogen fertilizer, but also not enough potassium and phosphorus fertilizer, there will be few flowers. Even if the flower buds grow, they will be easy to fall. However, the frequency of fertilization should not be too high. Once a week is enough for it to grow

3、 Improper illumination

Although it is suitable for growing in a semi shady environment, its growth needs sunshine. If there is insufficient light for a long time, the plant will not grow well, which will also lead to its failure to grow flower buds. We can't ignore the role of light and give direct light irradiation, but when the sun is hot in summer, we need to shade in time