| Calamus |
| Acorus calamus americanus|
| Uses: Culinary/Medicinal/Aromatic/Industrial
|| Duration: Perennial (hardy in zones 3-9) |
| When to Sow: Spring/Late Summer/Early Fall
|| Ease of Germination: Moderate |
| (Sweet flag)
Medicinally useful for flatulent colic, gastritis and dyspepsia. This is the North American variety which lacks the carcinogen, cis-isoasarone, found in European varieties. Root powder is valuable as a fixative in potpourris. Esteemed in India as a vermifuge and insecticide, especially for fleas.