Yarrow for Wounds and Bleeding

Greek myth (Achilles) through European and Native American medicine — 'soldier's woundwort,' 'nosebleed'

Evidence: Moderate — strong preclinical antimicrobial/anti-inflammatory data; small clinical trials for oral mucositis, dysmenorrhea, and wound ointments

Illustration: Yarrow (Achillea millefolium) — feathery leaves and white flower clusters

What it is and what it is used for

Yarrow (Achillea millefolium) flowering tops and leaves, applied as a poultice to minor wounds to slow bleeding and support healing. Laboratory work shows antimicrobial activity (including against Staphylococcus aureus), anti-inflammatory and antioxidant effects; small clinical trials found benefit for chemotherapy-induced mouth sores and for a multi-herb wound ointment containing yarrow. Human wound trials of yarrow alone remain limited — the evidence is promising rather than proven.

Safety and disclaimers

• CRITICAL LOOK-ALIKE: young yarrow can be confused with POISON HEMLOCK (Conium maculatum) — see the foraging section. All parts of poison hemlock are deadly; there is no antidote. If in doubt, do not harvest.
• Avoid if allergic to ragweed/daisies (Asteraceae cross-reactivity).
• Prolonged use may cause photosensitivity.
• For minor wounds only — deep, dirty, or animal-bite wounds need professional care (see the Backwoods First Aid chapter).

Foraging and preparing your ingredients

Warning: illustrations and photographs alone are never enough for safe wild identification. Confirm every plant in person with a knowledgeable local expert and at least two reliable field guides before harvesting or eating anything from the wild.

Where and when to find it: Meadows, lawns, roadsides, and mountain pastures. Flowers summer to early autumn.

Identification: Finely feathery, fern-like leaves; flat-topped clusters of small white (sometimes pink) flowers on upright stems. Compare with the captioned plate.

What to harvest: Flowering tops in full bloom.

Dangerous look-alikes: CRITICAL: young yarrow resembles POISON HEMLOCK (Conium maculatum), which is deadly — hemlock has smooth purple-blotched stems and grows much taller; yarrow is finely feathery and aromatic. See the High-Risk Index. When in doubt, do not harvest.

Harvest sustainably: Very abundant; take flowering tops from scattered plants.

Preparing and storing:

• Dry flowering tops in a dark, airy place until crisp.
• Store sealed and dark up to 1 year.
• For poultices, fresh leaves are best — use promptly.

Recipe

Ingredients:

• Fresh yarrow flowering tops and leaves (Achillea millefolium), positively identified
• Clean water

Preparation:

1. For a poultice: crush or chew the fresh leaves and flowers into a pulp and apply directly to a clean minor wound; hold with a bandage 20–30 minutes.
2. For a wash: steep a handful in just-boiled water 15 minutes, strain, cool, and use to rinse minor wounds.

Dosage / directions: As needed for minor wounds. Seek care for anything deep, gaping, or dirty.

Folk history

Legend says Achilles packed yarrow onto his soldiers' wounds at Troy — the Latin name Achillea is the receipt. It has been soldier's woundwort, nosebleed, and staunchweed across two thousand years of battlefields, and Native American tribes from the Iroquois to the Navajo used it independently for the same purpose. When separate continents agree on a wound herb, it is worth paying attention.

Scientific references

• 2017 Phytotherapy Research review — yarrow: antimicrobial, anti-inflammatory, wound-related pharmacology — https://www.researchgate.net/publication/340352015_Composition_and_antimicrobial_activity_of_essential_oil_of_yarrow_Achillea_millefolium_L