Achillea millefolium takes its genus name from Achilles, who, according to the myth, was taught by the centaur Chiron to use yarrow on the wounds of soldiers in battle. Whether or not the myth is historically accurate, yarrow pollen has been found in Neanderthal burial sites, suggesting a human relationship with the plant that is at least sixty thousand years old. It appears in the Anglo-Saxon Nine Herbs Charm, in Chinese medicine (the stalks are the traditional material for I Ching divination), in the Aztec medical tradition, and in dozens of other folk and traditional medical systems across the world.
Yarrow as a Wound Herb
The name “staunchweed” and “soldier’s wound-wort” speak to yarrow’s primary traditional application: stopping bleeding and healing wounds. The plant contains compounds with hemostatic (blood-clotting) properties and is also astringent, antimicrobial, and anti-inflammatory. Applied as a fresh leaf poultice or as a strong tea wash to wounds, it both helps slow bleeding and reduces the risk of infection.
This is one of those traditional applications that holds up well to contemporary scrutiny: the mechanism is real, the compounds responsible are identified, and the historical consensus across widely separated cultures is consistent with genuine efficacy. As a first-aid herb for minor cuts, abrasions, and nosebleeds, yarrow is one of the most practically useful wild plants available.
The Internal Applications
Yarrow is also a bitter digestive herb, a diaphoretic (promoting healthy perspiration in fevers), and a herb with particular affinity for the pelvic region: it has been used in the tradition for heavy menstrual bleeding, for urinary tract conditions, and as a regulating herb for reproductive system complaints. It is an herb of boundaries in multiple senses: the boundary of the skin (wounds), the boundary of the body’s fluid regulation (perspiration, urinary function), and the boundary of blood (hemostatic and menstrual-regulating).
In the Garden
Yarrow is a prolific garden perennial available in multiple colors (white, yellow, pink, red). It spreads vigorously through rhizomes and should be given appropriate space. Its flat-topped white flower clusters in summer are important for beneficial insects, particularly hoverflies and parasitic wasps. As a companion plant, it is one of the most valuable in the medicinal garden.
The Herbalist Codex app has the full yarrow profile with its use across cultures, its phytochemistry, and the range of preparation methods from fresh poultice to tincture.