サパ
There are ten major soil groups under 30 categories in the province, under ten land groups. The land groups are: The Alluvial group (1.47% of the land area) along the Red River is good for growing food crops and trees; the Oxisol type which occupies 40% of land area has generally reddish brown soil, below altitude of , is a fertile land suitable for the annual and commercial crops; Team Red Yellow soil humus covers 30% land area in the Sa Pa, Mường Khương, Bắc Hà, Bát Xát districts of the province suitable for medicinal plants, fruit trees and vegetables; humus soil on the mountain occupies 11.42% of the land area mostly in Sa Pa district which has rich canopy of mixed forest; and the Oxisol color altered by rice in 2% of land area are formed into a landscape of terraced fields, as seen in Bắc Hà and Sa Pa districts.