The long white fluff on the light blue leaves is called white velvet grass. According to relevant information, white velvet grass is also known as white flower teaspoon red, white flower, tiger flower, hairy hydrangea, Whitestorm cuisine, Yinzhenqi, Beifengcao, and lantern flower. , is the whole plant as medicine. Harvesting in summer when the foliage is luxuriant, drying in the sun, or using in all seasons.