🌻 Introduction

Agrimonia eupatoria is an upright perennial of hedgerow banks, grassland edges, and lane sides across Europe, producing slender spikes of small yellow 5-petalled flowers from June to August on stems 30-90 cm tall. The furrowed, top-shaped fruits are armed with hooked spines that catch in animal fur and clothing, dispersing seeds efficiently along hedgerow corridors and field margins.

Grows 30-90 cm from a short rootstock, producing erect, unbranched stems with appressed hairs. Leaves are pinnately compound with 3-6 pairs of major leaflets interspersed with smaller ones, softly hairy beneath and faintly aromatic when crushed (apricot-scented). Flowers are 5-8 mm across with 5 bright yellow petals and 5-20 stamens, borne in a long terminal raceme 10-30 cm. The distinctive fruit (hypanthium) is 6-8 mm long, deeply grooved, with a ring of hooked spines at the apex.

Quick Facts

🔍 Identification Guide

The slender spike of small yellow flowers above pinnate leaves with unequal-sized leaflets is characteristic. The downcurved, grooved fruits with hooked apical spines are diagnostic when present. Distinguish from Agrimonia procera (fragrant agrimony) by scent: A. eupatoria smells faintly of apricots, A. procera strongly of lemon. A. procera also has fewer, larger glandular dots on the leaf underside and more spreading fruit spines.

Flower Anatomy

Detailed Morphology

The fruit is a hypanthium (fused calyx tube and receptacle) enclosing 1-2 achenes, with the apical hook ring being modified sepals. The hooked spines are 2-3 mm long, recurved, and arranged in 2-3 whorls. Leaf surfaces bear both glandular and non-glandular trichomes; the glandular trichomes secrete a resinous substance containing agrimoniin (an ellagitannin). Stipules are large, semicircular, toothed, clasping the stem.

🧬 Taxonomy & Classification

Placed in Rosaceae, subfamily Rosoideae, tribe Sanguisorbeae. The genus Agrimonia contains approximately 15 species in the Northern Hemisphere. A. eupatoria is diploid (2n = 28). In Britain, two species occur: A. eupatoria (common agrimony) and A. procera (fragrant agrimony), the latter being tetraploid (2n = 56), taller, more glandular, and lemon-scented.

🐝 Bloom & Pollinators

Flowering June-August, with flowers opening sequentially from the base of the raceme upward over 4-6 weeks. Individual flowers last 3-4 days and are slightly protandrous. Each raceme bears 20-60 flowers but fruit set is typically 30-50% due to poor pollination efficiency. The hooks on the hypanthium begin to develop within days of petal fall, reaching full size 3 weeks after fertilization.

Pollinator Relationships

Visited by a range of small insects including hoverflies, solitary bees (Halictus, Lasioglossum spp.), small beetles, and occasionally butterflies. Nectar is secreted by a ring within the hypanthium and is easily accessible to short-tongued visitors. The small, simple flowers offer pollen as the primary reward. Self-pollination occurs when insect visits fail, ensuring seed production.

Bloom Details

🔎 Similar Species

Agrimonia procera (fragrant agrimony) is taller (60-120 cm), more glandular with a strong lemon scent, and has fruit spines that spread outward rather than converge upward. Potentilla erecta (tormentil) has 4 yellow petals (not 5) and prostrate growth. Filipendula vulgaris (dropwort) has cream flowers in dense terminal corymbs and lacks hooked fruits entirely.

Known Look-Alikes

🌍 Native Range & Habitat

Native across Europe, western Asia, and North Africa on well-drained, base-rich soils. In Britain, characteristic of sunny hedgebanks, road verges, churchyards, and field margins on calcareous or neutral clays. Indicator of old, undisturbed grassland edges. Altitude range from sea level to 800 m. Tolerates moderate drought but not waterlogging.

Range & Habitat

🗺 Distribution Map

Native distribution of Agrimony (range: Europe, Western Asia, North Africa). It has been introduced in North America.

🌱 Growing from Seed

Sow fresh seed in autumn; germination requires cold stratification (6-8 weeks at 2-5°C) and occurs the following spring at soil temperatures above 10°C. Seed can also be scarified mechanically (light abrasion of the fruit wall) before spring sowing. Plant out at 30 cm spacing. Division of established clumps in autumn is also effective. First flowering in the second or third year from seed.

Propagation Methods

• Seed
• Division

Seed Starting Guide

🏡 Garden Cultivation

Grows in full sun to partial shade on well-drained, neutral to alkaline soil. An easy, undemanding perennial for the wildflower border, herb garden, or meadow edge. The upright habit requires no staking. Cut back old stems in early spring. Self-seeds modestly where happy. Suits cottage garden borders alongside traditional herbs and native perennials.

Site Requirements

Additional Traits

• Self-seeding — will naturalize in suitable conditions

🤝 Companion Planting

Classic hedgerow companions include Clinopodium vulgare, Origanum vulgare, and Centaurea nigra on calcareous soils. In the herb garden, grow with Filipendula ulmaria, Achillea millefolium, and Hypericum perforatum — all traditional European medicinal herbs. The yellow flowers complement the blues of Succisa pratensis and Knautia arvensis in grassland edge plantings.

Recommended Companion Plants

🦋 Wildlife Value

Nectar plant for hoverflies and small solitary bees during July-August. Hooked fruits are dispersed by mammals (especially sheep and deer) and contribute to seed rain along hedgerow corridors. The mildly aromatic foliage is browsed by rabbits. Associated with the rare agrimony moth (Aethes smeathmanniana) whose larvae feed on the flower buds and developing fruits.

Wildlife Interactions

• Minor nectar source
• Bur fruits dispersed on animal fur

🌿 Conservation

Widespread but declining in improved grasslands and where hedgerow management has intensified. Listed on several county rare plant registers where formerly common populations have been lost to herbicide drift, road verge mowing during flowering, and hedge-flailing that removes the flowering zone. Benefits from traditional late-summer hay-meadow management that allows seed set before cutting.

📅 Seasonal Interest

Pinnate rosettes emerge in April, expanding through May. Flower spikes develop June-August, providing 6-8 weeks of yellow bloom. The grooved, hook-bearing fruits persist on stems through September-November, catching on passing animals and clothing. Dead stems remain standing through winter, providing structural interest and insect overwintering habitat.

🏨 Landscape Design

Use in wildflower meadow edges, hedge bank restorations, and cottage herb borders. The upright, narrow form fits into tight spaces at border fronts or along path edges. Plant in groups of 5-7 for visual impact. Combine with other traditional hedgerow herbs for a 'herbal lane' effect. The architectural dried seed heads extend interest well beyond the flowering season.

Design Considerations

• Growth form (Erect, unbranched, hairy stems) determines placement in borders and naturalistic plantings
• At 30-90 cm, consider position relative to sight lines and companion heights
• Allow 20-30 cm spacing for natural spread
• Low-maintenance choice for naturalistic or xeriscape plantings
• Will naturalize by self-sowing — ideal for meadow and prairie-style gardens

🏷️ Varieties & Cultivars

No cultivars exist in commerce. Populations show some variation in height, glandularity, and fruit spine length. The closely related A. procera (fragrant agrimony) is sometimes grown in herb gardens for its stronger lemon scent. Seeds and plants of A. eupatoria are available from wildflower seed suppliers and native plant nurseries for meadow establishment.

📜 Folklore & Ethnobotany

One of the most revered medicinal herbs in European tradition since ancient Greece — the name 'eupatoria' honours Mithridates VI Eupator, King of Pontus, who was renowned for his knowledge of poisons and antidotes. Anglo-Saxon leechbooks list it as 'agrimonia' for wound healing. In medieval France it was a key ingredient in 'Eau d'arquebusade' (gunshot wound water). Still used in modern European herbal medicine for digestive and urinary tract conditions.

Traditional & Ethnobotanical Uses

• Traditional astringent for sore throats and diarrhoea
• Anglo-Saxon healing herb — 'holy wort'
• Yellow dye from whole plant

Medicinal & Herbal Uses

Contains the polyphenol agrimoniin (an ellagitannin) at 2-4% dry weight, with confirmed anti-inflammatory, astringent, and hepatoprotective activity. Used in European phytotherapy as tea or tincture for mild diarrhoea, sore throat gargle, and urinary tract infections. The German Commission E monograph approves its use for mild gastrointestinal complaints. Dried aerial parts (harvested during flowering) are the officinal drug, available in pharmacies across Central Europe.

💡 Beginner's Guide

Plant in a sunny hedgerow bank or border edge on well-drained soil. No feeding or special care needed — agrimony is a low-maintenance wildflower that asks only for sun and drainage. The yellow spikes blend naturally with other wildflowers. Leave dead stems standing over winter for wildlife value. Harvest the flowering tops for herbal tea if desired — a mild, pleasant drink.

Common Mistakes to Avoid

Growing Tips

Troubleshooting

Few pest or disease problems. Powdery mildew can affect foliage in dry summers — cosmetic only. If plants fail to flower, suspect too much shade or excessively rich soil. Slugs occasionally damage young spring growth in wet years. The hooked fruits can be a minor nuisance when they catch on clothing or pet fur near garden paths — site plants slightly away from high-traffic areas.

❓ Frequently Asked Questions