Couch Grass (Elymus repens) vs Marshmallow (Althaea officinalis)

Couch Grass (Elymus repens)

Marshmallow (Althaea officinalis)

About

Couch grass is a vigorous perennial growing to 32 inches with a long, creeping rhizome, slender leaves, and erect spikes bearing green flowers aligned in two rows. Found in Europe, the Americas, northern Asia, and Australia, it is an invasive weed harvested throughout the year. In classical times, both Dioscorides (40-90 CE) and Pliny (23-79 CE) recommended couch grass root for poor urine flow and kidney stones. The herbalist John Gerard wrote in 1597 that 'Couch-grasse be an unwelcome guest to fields and gardens, yet his physicke virtues do recompense those hurts; for it openeth the stoppings of the liver and reins [ureters] without heat.' In times of famine, the root was roasted and ground as a substitute for coffee and flour.

Marshmallow (Althaea officinalis) is a downy perennial up to about 7 ft (2.2 m), with thick white roots, heart-shaped leaves, and pink flowers. Known for its high mucilage content, marshmallow soothes inflamed mucous membranes, including those in the respiratory, urinary, and digestive systems.

Safety & precautions

Generally safe. No known warnings for normal use.

Very Mild & Safe: Typically fine for children, infants, and the elderly. No Major Warnings: Generally considered gentle with minimal side effects.

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