Yarrow leaves are sessile, lanceolate, oblong, lanceolate, or nearly striped, growing about 5 to 7 cm, with 2 to 3 pinnate complete splits, leaf axis about 1.5 to 2 mm wide, most of the first lobes, spaced 1.7 to 7 mm apart, and the last lobes are lanceolate to striped, 0.5 to 1.5 mm long, 0.3 to 0.5 mm wide, with short cartilage tips at the top
The leaf outline of the lower part of the stem of Leonurus japonicus is ovate, with wide wedge-shaped base and 3 palms. The lobes are oblong rhombus to oval, usually 2.5 to 6 cm and 1.5 to 4 cm wide. The lobes are divided again, green above and light green below.
Yarrow head, dense in 2 to 6 cm corymbose, flower tongue nearly round, color white, pink or mauve.
The umbel of Leonurus japonicus is axillary and has 8 to 15 small flowers. The outline of the flowers is round and the diameter is 2 to 2.5 cm. The Corolla is pink or lavender.
