Travel to Ha Giang during October and November, the scenery of this region is so fabulous. The ethnic peoples cultivate Buckwheat flower (Tam Giac Mach) after rice season. Everywhere on terraced field is full of colour of Buckwheat flower. This flower nowaday seem become symbol of this region.
This plant do not need much water so it is easy to cultivate on dry and rocky region like Ha Giang and only grow up better during cool weather. This plant have many useful such as the ethnic peoples can boil and eat like a vegetable or harvest the seed and grind to make their special cake or the most famous is used to cook wine, that is Tam Giac Mach wine, have only in Ha Giang.