The reason why Zhangqiu Welsh onion is unique in quality, tall and magnificent is mainly due to its excellent variety characteristics, unique cultivation methods, unique geographical area, abundant soil and water conditions and good ecological environment. After generations of purification and rejuvenation by Zhangqiu people, the phoenix tree and the wind are the cornerstones of high quality of Zhangqiu green onions; Deep ditching and high soil cultivation are important cultivation measures to ensure high onion and white.
The producing area, especially Nvlang Mountain, has a special soil structure. The main irrigation water source of Zhangqiu Welsh onion is Xiujiang River, which originated from Baimaiquan Group. The water quality is pure and rich in trace elements such as strontium and metasilicic acid.
The climate with hot summer and cold winter, moderate temperature in spring and autumn, rainy and humid summer and dry winter and spring is most suitable for the rhythmic needs of the growth and development cycle of Chinese onion. Variety, technology, land, spring water, and ecology are the five elements that gather to have the unique quality of Zhangqiu green onion.