Agrimony , or agrimony in English, is a perennial plant whose phytotherapeutic virtues have been known since Antiquity. Called by some "St. William's herb", "Greek yeupatorium" or "Northern tea", this species belonging to the genus Agrimonia and the large Rosaceae family grows in Europe and Asia. It is found on the edges of forests, in wastelands or on the edges of paths and trails where it flourishes easily, reaching up to 40 to 80 cm in height.
Agrimony is a plant that flowers in summer (June to September), the period during which it is harvested. Composed of hairy, reddish stems, it is recognizable by its serrated leaves on which develop small yellow flowers formed of five petals grouped in spikes. Preferring solitary spaces to the proximity of its congeners, it particularly appreciates sunny and dry environments. Its stems move during the day to follow the movement of the sun, sometimes giving the impression of seeking the company of walkers.