Bitter tea (Che Dang-CD) was planted in experiment in high mountainous region (at the altitude of 1000m) and low mountainous region (altitude of 500-600m). The quality of its leaves collected from 2 years old age plants of Son La Province is as good as those of Cao Bang Province. Total content of saponosides, flavonoides polysaccharides, carotenoides is rather high as 10-12,49%, 4,15- 4,74%, 6,3-6,65%, and 6,0- 11,0mg% respectively. Water extracted contents reached 31,44- 36,28%. The results had suggested that the climatic, pedological and ecological conditions of Son la are suitable for developing CD culture with good quality products
tea ; plants, medicinal ; Flavonoids ; Polysaccharides