How many days is the growth period of buckwheat and when will it be harvested and matured?

The growth period of buckwheat is relatively short, and the older generation in North China will postpone the sowing date before planting buckwheat. Buckwheat can only be planted after the beginning of autumn. Of course, if it is Gansu, Northeast China or Inner Mongolia, it should be earlier. In those days, the first frost will mature after the solar term, and the growth period is about 80 days. Buckwheat can only be harvested when it is fully mature, and wheat grains are easy to fall off.