1、 Cause

1. Lack of nutrients

Plants need a lot of nutrients when flowering. At this time, if the nutrients required for flowering are not supplemented in time, it is likely to grow leaves without flowering

2. Planted too deep

When planting plants, if its roots are buried too much in the soil, it is likely that the roots will not get enough air, which will cause the roots to be unable to breathe and affect the growth of flowers

3. Excessive nitrogen fertilizer

When fertilizing plants, if too much nitrogen fertilizer is applied, the leaves will grow too much and the flowers will not open

2、 Solutions

1. When the plant is approaching the flowering period, supplement nutrients to the plant in time and after the flowering period. Don't raise too many plants in one pot, otherwise the supply of nutrients will be insufficient

2. When planting plants, you only need to bury two-thirds of the plant roots in the flower soil and expose one-third

3. We should apply some potassium fertilizer to the plants in summer and some nitrogen fertilizer in spring, but we must control the amount of fertilizer