Mulberry ripens in Japan from late July to mid-September. The specific maturity time will be different due to the influence of climate, region and cultivation methods. In Japan, mulberry trees are common in Hokkaido, northeastern China and Yin Shan. The ripening time of Japanese mulberry is mainly influenced by climate and region. From late July to September, the growth of mulberry trees is the most vigorous period, while the climatic conditions in Japan are usually more suitable for mulberry growth from late July to September, with comfortable temperature and abundant rainfall. During this period, mulberry trees are more likely to thrive and eventually mature.