Normal flowering period of Jingui
Osmanthus fragrans is rich in varieties, which can generally be simply divided into Jingui, Yin Gui, Dangui and Sijigui. Among them, osmanthus fragrans can be opened many times in the right place. For example, in the warm and humid southern Anhui, you can feel the fragrance of osmanthus in the four seasons in winter. Among Jingui, Yin Gui and Dangui, Yin Gui has the earliest flowering time, which can be gradually opened in mid-September every year, while Jingui and Dangui bloom a little later, usually from late September to mid-June every year 10, which coincides with the traditional Mid-Autumn Festival in China. Therefore, in addition to eating moon cakes, you can also enjoy the moon, which has become a traditional project for China people to celebrate the Mid-Autumn Festival.
The flowering time of Jingui in different regions is slightly different.
The flowering time of Jingui in different regions is obviously different. "Sweet-scented osmanthus freezing in August" is a common saying of the rural elderly, which means that there will be a few days of low temperature in August, which objectively reflects the general law of autumn climate change and the physiological characteristics of sweet-scented osmanthus flowering. Its guiding significance lies in making it clear that there will be low-temperature weather in August of the lunar calendar every year, indicating that the opening of osmanthus fragrans needs low-temperature climate stimulation.
The climate of China is characterized by high in the south and low in the north, and the low temperature weather gradually comes from north to south. In this way, the cold weather in the north comes earlier than that in the south, which can stimulate the Jingui in the north to open early, so Jingui will open a few days earlier in places suitable for planting osmanthus in the north. According to the recorded observation records, the same variety of osmanthus fragrans is planted in Jinan, Shandong Province and Hangzhou, Zhejiang Province, and the osmanthus fragrans in Jinan blooms 8 days earlier than that in Hangzhou.
The climate difference throughout the year will also affect the flowering time of Jingui
It is precisely because of the sensitivity of osmanthus fragrans to low temperature that the annual climate change will also affect the flowering time of osmanthus fragrans. For example, in 20 19, there was continuous dry and warm autumn weather in most parts of China, and the low temperature weather came late. By the end of September every year, Jingui is still in full bloom, and even on the Mid-Autumn Festival, many Jingui barely bloomed a few flowers, which left a lot of regrets for friends who had expected the Mid-Autumn Festival. The climate is normal and there is plenty of rain this year. In mid-September, Jingui was full of flowers.
Therefore, if the temperature is high in autumn and the low temperature cannot be reached, it will affect the timely arrival of Jingui. In the warm autumn year, the flowering time of Jingui will be postponed to the arrival of low temperature, which will stimulate Jingui to bloom and give people who love osmanthus a surprise of "suddenly like a cold wind overnight, thousands of trees bloom".
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Jingui is one of many osmanthus varieties in China. The flowering time of Jingui is slightly later than that of Yin Gui, and it is basically synchronous with Dangui. Generally, it is open from mid-September to mid-June every year 10. Different geographical locations will affect the flowering time of local Jingui. Usually, the flowering time of Jingui in the north is 7-8 days earlier than that in the south. At the same time, the annual climate difference will also affect the flowering time of Jingui. Generally, warm autumn weather will delay the flowering time of Jingui, and Jingui will be "chilly" and bloom brilliantly until the obvious low temperature weather appears.