Organic dry Calamus (Acorus calamus) root. Macro close up background texture. Top view.

Originally the calamus comes from China. As early as 3700 B.C., it had the reputation in China of being a life-extender. Since the 16th century it has also been native to Central Europe. The calamus grows preferentially along the banks of streams, ponds and ditches.

In spring, several sword-shaped thin leaves grow from the horizontally creeping rootstock, which can reach a height of up to one metre. In midsummer an angular stem grows, which carries a greenish-yellow cone-shaped flower head.


Scientific name
Acorus calamus.

Plant family

Other names
Sweet flag , ackermann, fieldroot, bayonet sticks, breastwort, calamus spice, carms, stomachroot, German ginger, zedoary.

Used plant parts

Bitter substance acorin, acoretin (resin), essential oil, calamine choline, trimethylamine, calamus tannic acid, mucilage, terpenes, calamenol, palmitic acid.

Harvest period
March and April, September to November.

Medicinal properties

Main use: Stomach.

The calamus is especially helpful for stomach problems and has the legendary reputation of being a life prolonging agent. The calamus root can also help you quit smoking. If you chew the root, you will feel nauseous when smoking. Small children can chew the root if they have toothache.

Healing effects

        • Loss of appetite
        • Stomach cramps
        • Gastric catarrh
        • Bowel spasms
        • Flatulence
        • Ulcers
        • Constipation
        • Oral mucosa inflammation
        • Teething children

Application method

        • Orally

Forms of preparation

The calamus can be prepared as a cold extract for 8 hours, one teaspoon of the crushed root per cup. You can also make a hot tea/infusion and let it steep for five minutes. A tincture can also be prepared with the calamus. Take 30 drops of this three times a day.


Acorus_calamus (Wikipedia)

Sweet flag
Acorus calamus1.jpg
Sweet flag
Scientific classification edit
A. calamus
Binomial name
Acorus calamus
L., 1753

Calamus aromaticus Garsault

Acorus calamus (also called sweet flag, sway or calamus, among many common names) is a species of flowering plant with psychoactive chemicals. It is a tall wetland monocot of the family Acoraceae, in the genus Acorus. Although used in traditional medicine over centuries to treat digestive disorders and pain, there is no clinical evidence for its safety or efficacy – and ingested calamus may be toxic – leading to its commercial ban in the United States.

Calamus (Wiktionary)



Borrowed from Latin calamus (reed, cane), from Ancient Greek κάλαμος (kálamos). Doublet of shawm.


calamus (usually uncountable, plural calamuses or calami)

  1. The sweet flag, Acorus calamus.
  2. (ornithology) A quill; the hard, horny, hollow, and more or less transparent part of the stem or scape of a feather.
  3. (Christianity, historical) Synonym of fistula (tube for sucking
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