Introduction to the flowering period of different varieties of grapes, how long is the flowering period of grapes

1. Introduction to flowering period of different varieties

1. Summer Black: Summer Black grapes are native to Japan and are considered a descendant of Kyoho. It usually starts to sprout in late March and blooms in mid-May. The fruit will mature about 110 days after flowering, which means the fruiting period is in late July. The fruit has a strong aroma, is seedless, hard and moist, and tastes good.

2. Green grape: It belongs to the Eurasian species and its origin is California, USA. It usually blooms between April and May each year, and the fruits mature between August and September. However, some mature earlier and are available for purchase in May and June. It is mostly cultivated in the northern regions of my country. It is resistant to transportation, has high yield and excellent quality.

3. Gold Finger: It is a hybrid variety of Europe and America. It usually starts to sprout in early April, blooms in mid-to-late May, and the fruit matures in early August. It matures earlier than the Kyoho variety and is considered a medium-early variety. Its fruit clusters are large and oblong-conical in shape. The fruit skin is yellow-white, tough and not easy to crack.

2. Flowering period management

Regardless of the variety, attention should be paid to management methods during the flowering period. Pay more attention to temperature, humidity and nutrients. In terms of temperature, the daytime temperature should be controlled at around 28 degrees, and the nighttime temperature should be between 16-18 degrees, so that it can bloom better. Humidity must be strictly controlled after flowering, stop watering, and the humidity should be at 50%. In terms of nutrients, fertilizer should be applied before and after flowering, and boric acid should be sprayed during flowering, which can increase the fruit set rate.