2. Kyoho grape began to sprout in mid-April, blossomed in late May, and matured in late July. However, if Kyoho grape is cultivated in solar greenhouse, the fruit of Kyoho grape will be ripe in early August. Mature Kyoho grape is purple-black in appearance, with thick skin and more fruit powder. It tastes soft, sweet, sour and juicy, and rich in nutrition. It is a fruit suitable for all ages.