Yarrow: Achillea millefolium

Yarrow (Achillea millefolium) is a perennial herb of grasslands, verges, and disturbed soils across Britain. It is widely recognised by its finely divided leaves and flat clusters of small white or pale pink flowers.

Botanical Overview

Achillea millefolium belongs to the daisy family (Asteraceae). It is a rhizomatous perennial forming spreading colonies.

It grows in:

• Meadows and pasture
• Road verges
• Coastal grasslands
• Waste ground

It tolerates poor soils and drought, contributing to its wide distribution.

Identification Features

• Leaves finely divided into narrow segments, giving a feather-like appearance
• Strong, slightly aromatic scent when crushed
• Flower heads arranged in flat-topped clusters
• Individual flowers small, white to pale pink, with yellow centres
• Stems erect, often slightly hairy

History & Etymology

The genus name Achillea is traditionally linked to Achilles. This association appears in later classical and herbal traditions rather than securely dated ancient medical texts.

The species name millefolium means “thousand-leaved,” referring to the dissected foliage.

Yarrow is consistently recorded in European herbals as a plant used for wounds and digestive complaints ^[2] .

Folklore & Mythology

Yarrow appears widely in British and European folklore.

It is associated with protection, healing, and divination.

The Spirit of the Plant

Folk traditions describe yarrow as protective when carried or worn. These beliefs are cultural and not evidence-based.

Protection & Witchcraft

Documented uses include:

• Hanging in homes for protection
• Carrying as a charm
• Inclusion in ritual bundles

These uses are recorded in ethnobotanical literature ^[3] .

Death, Grief & Associated Beliefs

Yarrow appears in funerary contexts in parts of Britain. It is associated with both healing and death in folklore.

Regional Traditions

• Used in love divination practices in England
• Associated with weather lore in Europe
• Related species used in East Asian divination systems

Culinary Uses

Yarrow has a bitter taste and is used sparingly.

Leaves and Flowers

Used in:

• Herbal infusions
• Bitter flavouring
• Historical brewing

Medicinal & Traditional Uses

Traditional Uses

Traditional European uses include:

• Wound application
• Digestive complaints
• Fever

These uses are recorded in historical herbal texts ^[2] .

Modern Research

Laboratory studies report:

• Anti-inflammatory activity
• Antimicrobial effects
• Antioxidant activity

A review in the Journal of Ethnopharmacology concludes that these findings are largely based on in vitro and animal studies, with limited clinical evidence in humans ^[4] .

There is no strong clinical evidence supporting specific therapeutic use.

Phytochemistry

Chemical studies confirm multiple compound groups:

These compounds are reported in phytochemical and pharmacological studies ^{[4] [5]} .

Craft, Dye & Practical Uses

• Dye: Produces yellow or green tones
• Companion planting: Attracts insects

Safety & Toxicity

Yarrow is generally tolerated in small quantities.

Reported risks include:

• Skin irritation in sensitive individuals
• Potential allergic reactions (Asteraceae family)

What is safe:

• Aerial parts (small amounts) — traditional use in teas

What to avoid:

• Large or prolonged intake — insufficient safety data

Contraindications

• Pregnancy: traditionally avoided (limited evidence)
• Known plant allergies
• Use alongside medication should be cautious

Growing Yarrow in the Garden

• Soil: Well-drained
• Light: Full sun
• Water: Low once established
• Spread: Can spread via rhizomes

Frequently Asked Questions