The leaves of Elsholtzia are elliptic lanceolate or ovate, about - 3-9 cm in length and 1-4 cm in width. The apex is acuminate, the base is wedge-shaped, the bottom is extended into wings, the edge is serrated, the top is green, there are small bristles, the bottom is light green, the main vein has small bristles, and other places have gland spots.
The leaves of Agastache rugosa are heart-shaped ovate to oblong lanceolate, wider than the former, about 4.5-11cm long and 3-6.5cm wide, with tail like long acuminate at the apex, heart-shaped at the base, olive green above, glabrous, slightly light color below, with pilose and glandular dots.
Elsholtzia spicules, about 2-7 cm long, about 1.3 cm wide, bracts are wide oval or oblate, calyx is bell shaped, corolla color is lilac.
Agastache rugosa is a cymose, which can form a cylindrical spike on the main stem or side branches, about 2.5-12 cm long. The bracts are needle like, the calyx is tubular inverted cone, and the color of the Corolla is light blue purple.
