Couch Grass

Identity

Common Name

Couch Grass

Scientific Name

Elymus repens

Botanical Family

Poaceae

Native Region

Europe and temperate Asia

Cultivation Regions

Worldwide temperate (often a weed)

Plant Parts Used

Rhizome (root)

Synonyms

Quackgrass, Triticum repens, Agropyron repens, Dog Grass

Caffeine Level

Caffeine Free

A common grass with long narrow green blades, a flat spike of alternating seedlets, and an extensive creeping rhizome — the medicinal part, long valued as a soothing urinary demulcent.

Historical Background

Used in European herbalism since antiquity as a gentle, soothing urinary tonic; Hippocrates and later Eclectic physicians recommended it for bladder and kidney irritation.

Earliest recorded uses: Bladder and kidney discomfort, urinary soothing, and as a mild diuretic.

Cultural significance: A ubiquitous 'weed' valued as a softening, demulcent root tea in cottage and clinical practice alike.

1. Classical

   Greek physicians note couch grass root for urinary complaints.

2. 19th century

   Eclectic and European herbalists use the decoction for bladder soothing.

Traditional Uses

These uses document historical traditions and do not imply proven effectiveness.

Flavor & Aroma

Aroma: Fresh, hay-like, green

Tea Information

Research Summary

Mucilage (triticin) and silicates account for the demulcent urinary tradition; clinical evidence is limited.

Evidence levels reflect the currently available scientific literature and may change as new research emerges. Where evidence is limited or conflicting, this is stated plainly.

References & Sources