1. Flowering starts in March and April every year, and the flowering time will be different in different years. After three months of planting, rape flowers begin to bloom, and their flowering period will affect about 30 days.

2. Rape flowers are widely distributed in China, so according to the different planting areas and sizes, different land and sea locations, rape flowers can be divided into two areas: spring rape and winter rape. So at the time of flowering, rape flowers will be seen in different places from the end of1February to the end of April of the following year.

3. In the south of Taiwan Province Province, talented flowers can be seen in full bloom at the end of1February, and the flowering period in warm winter will be advanced. Rape flowers mainly bloom in Yunnan, Guangdong and Guangxi1-February, and the Sichuan basin and the area north of Wuyishan enter its full bloom in March-April.