"Jiudu garlic" is mainly produced in Sanxiang and Hancheng, Yiyang. Its characteristics are: large petals, white skin, strong flavor, high yield, easy storage, and strong resistance to diseases and insect pests. The county's annual planting area is about 6,000 acres, with an annual output of more than 5,000 tons. Not only famous in western Henan, but also exported to countries and regions such as Singapore, Malaysia, Japan, Hong Kong, Macau and the Middle East.

Yiyang has a long history of growing garlic. During the period of Emperor Wu of the Han Dynasty BC, when Zhang Qian was on his mission to the Western Regions, garlic had been introduced to the area. By the Ming Dynasty, Yiyang garlic was quite famous. When Li Zicheng, the leader of the Peasant Rebel Army, passed by Shuigoumiao Village in Sanxiang, he admired the garlic very much and went to the fields to grow garlic with the farmers himself. In recent years, with the development of market economy, Yiyang County has continuously improved cultivation techniques according to market demand, leading to the selection of new and excellent varieties, which has rapidly expanded the garlic planting area and further improved the quality. The garlic planting area in Yiyang has expanded to 1 With the annual output rising to 20,000 to 30,000 tons, it has become one of the pillar industries for local farmers to get rich.

Sanxiang Town is located 45 kilometers west of Yiyang County. Zhenglu Road runs through the entire town from east to west, and the transportation is convenient. There are three rivers, Luo River, Lianchang River and Duyang River, flowing through Sanxiang Town, and the land is fertile. Sanxiang Town's "Jiudu Garlic" is famous in western Henan for its large size, white color, spicy taste and long shelf life. Nancun, located in the eastern part of Sanxiang Town, is the administrative village with the largest garlic planting area in the town. It has a population of more than 1,800 and a cultivated land area of ??2,000 acres. The history of garlic cultivation in Nancun can be traced back to the Eastern Han Dynasty.

In the early 1990s, Nancun’s garlic sales reached its peak, with thousands of tons of garlic exported to Japan, Europe and other places. In July 2003, Sanxiang Township at that time was named "Pollution-free Garlic Production Base" by the Henan Provincial Pollution-free Agricultural Products Origin Certification Committee. It was also that year that the "Jiudu Garlic" trademark was officially registered, and garlic planting and sales in Nancun began to become standardized and market-oriented. In 2007, Nancun's garlic began to be packaged and sold, with annual sales reaching 10,000 boxes. The price of garlic after packaging has doubled compared with the price before packaging.

Nowadays, all the garlic in Nancun has undergone off-site planting and improvement, pollution-free planting technology has been promoted, and all garlic fields are covered with mulching film, and the quality and yield have been greatly improved. During the garlic harvest season, merchants from all over the world gather here, and Nancun garlic is exported to Hebei, Fujian, Xinjiang and other places.