Yame City is in a vast expanse of plain in Chikushi Region (Chikushi Plain) in the south of Fukuoka Prefecture (4987 km2, pop. 5 million). Chikushi Plain is blessed with an ideally wonderful climate and fertile soil conditions for agricultural production. In particular, the area ranging from Chikugo River basin to Yabe River basin (called as Yame Region) has produced green tea for centuries. Thanks to the area's particular soil, most of the green tea produced in this region has a full-bodied taste and a remarkable sweetness.

Morning mists and river fogs are very frequent. Curtains of fog wrap green tea plantations, properly blocking sunlight. This helps generating more amino acids (including theanine, glutamic acid, arginine, etc.) within the tea leaves.

In  addition, Yame enjoys an inland climate－high temperature during daytime and very low temperatures at  night. Finally,  the region receives an annual rainfall of 1,600 mm to 2,400 mm. These  features are ideal for green tea production.