Sweet and sour horn is a kind of plant, also known as sour horn, tamarind or sour plum. It is more common in the south, because I like the warm environment. In the northern region, due to the low temperature, planting sweet and sour corn will face some difficulties. The seeds of sweet and sour corn can be propagated by sowing, but the climatic conditions in the northern region are not suitable for its growth. Therefore, the northern region is not suitable for planting sweet and sour horns.