|Agastache rugosa is a
perennial herb found in grasslands or forest edges in mountainous
regions, the stems, cross-section being square, measuring 0.4-1m in
height, branching on upper parts. Leaves are opposite, in the shape
of an oval-like lanceolate, having sharply serrated margins.
Racemes, 5-15cm long, on the branch tops concentrate many lip-shaped
purple flowers; the corollas are 8-10mm long, the lower lips are
cleft in three, and stamens, 4, pop out from the corolla. Bloom
time: August- October.