How many grapes does Dingzhuang ripen a year?

Late September to the beginning of 10. Dingzhuang grape is a late-maturing whole grape variety, which generally needs a long growth period to grow and develop and harvest delicious fruit, and ripens at the end of September to 10. Grape is a deciduous vine with palmately divided leaves, small yellow-green flowers, spherical or oval berries. Most of them are purple or yellow-green, sweet and sour, and juicy. It is a common fruit and is also used for wine making.