There is no wormwood in Saihanba grassland. Saihanba Grassland is a vast grassland at the junction of China Inner Mongolia Autonomous Region and Hebei Province, and it is one of the important ecological barrier projects in China. The main vegetation on the grassland is herbs, mainly Quercus mongolica and Leymus chinensis, and the others are corn aloe. Wormwood is generally distributed in southern China, such as Jiangsu, Zhejiang, Yunnan, Hunan and other places. So there will be no growth of wormwood in Saihanba grassland.