Pignut
It is generally 91 to 152 cm tall, occasionally up to 3 m. Stems are hairy and square in cross-section. Leaves are oppositely arranged, 2 to 10 cm long, with shallowly toothed margins, and emit a strong minty odor if crushed. Flowers are pink or purple, arranged in clusters of 2.5 to 13 cm in the upper leaf axils.