1、 Maturity

The maturity period of walnut will change due to different varieties and climate differences. The maturity period of some early maturing varieties and late maturing varieties can differ by 10 to 25 days. Generally, the maturity period in the north is mostly from the first ten days to the middle of September, and it is relatively earlier in the South

2、 Picking season

When the walnut is harvested from August 25 to September 1, the walnut kernel is yellowish brown or light brown. At this time, its taste will become fragrant, but it will be a little astringent; If the walnut is picked after September 1, the walnut kernel will be white yellow, oily and crisp. If the walnut is harvested later, the maturity will be very high and the green skin will crack. At this time, it will be easy to remove the green skin, and the fruit surface after peeling will be clean and good-looking