1、 Blade difference

The leaves of Artemisia annua have no petiole, full edge or light serration on the edge, light green on the top, white pilose at the initial stage, and fall off at the later stage. The leaves of the basal leaves and the lower part of the stem are narrow ovate or elliptic ovate, rarely broad ovate, and will wither at the flowering stage. The leaves in the middle are long elliptic or linear lanceolate, and the leaves in the upper part are smaller, elliptic or lanceolate

The leaves of Artemisia argyi have gray white pubescence, white gland spots and small pits. The basal leaves have long stalks. The leaves under the stem are nearly round or wide oval, the middle leaves are oval or triangular oval, and the upper leaves are similar to the former, oval or lanceolate

2、 Color difference

The color of Artemisia annua is yellow. The flower color of Artemisia annua is purple