Planting and Growing Calamus

Calamus, also known as sweet flag or single-vein sweetflag, is botanically known as Acorus calamus or Acorus americanus. It is from the Arum family of plants and is native to the United States.

Calamus Description

Growing up to five feet tall, this grass-like perennial is aromatic and has tiny yellow-green flowers. The flower stalk resembles the leaves. Bloom season is between June and August.

Growing Guide for Calamus

Calamus prefers to grow in full sun or partial shade lighting and a moist or wet acidic soil. Propagate by root cuttings or by seed. Seeds are sparse, but germinate well.


Calamus can be found throughout the states of Alabama, Arkansas, Colorado, California, Connecticut, District of Columbia, Delaware, Georgia, Iowa, Indiana, Illinois, Kansas, Louisiana, Kentucky, Massachusetts, Maryland, Michigan, Maine, Minnesota, Missouri, Mississippi, North Carolina, Nebraska, New Hampshire, New York, New Jersey, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Virginia, West Virginia, Vermont, Washington, and Wisconsin.

Native Plant Argument

There is a growing argument whether this is a real native plant or if it is a very early introduction. Botanists are divided on it being a North American native plant or an Eurasia naturalized plant.


Kingdom Plantae- Plants

Subkingdom Tracheobionta- Vascular plants

Superdivision Spermatophyta- Seed plants

Division Magnoliophyta- Flowering plants

Class Liliopsida- Monocotyledons

Subclass Arecidae

Order Arales

Family Acoraceae- Calamus family

Genus Acorus L.- sweetflag

Species Acorus calamus L.- calamus

Source: NPIN

People also view

Leave a Reply

Your email address will not be published. Required fields are marked *