1, the leaves of Artemisia annua are not used, the fresh Artemisia annua remove the leaves and roots, wrapped in plastic wrap, put into the refrigerator for preservation of the fresh layer, so that it can be preserved for about a week.

2, Artemisia annua is a plant of the genus Artemisia of the family of Asteraceae, young stems and leaves, rhizomes, also known as Artemisia vulgaris, water ayahuasca, water artemisia, etc.. Perennial herbs, plants with fragrant odor. Young stem and leaves can be cold, fried food. Rhizome can be pickled. It grows in areas from 800 to 3,000 meters above sea level, and is often found in moist open forests, mountain slopes, roadsides, and wastelands. It is found in Mongolia, North Korea, Russia, and many parts of China.