What is Acorus Calamus or the Sweet Flag?

The sweet flag is a herbaceous perennial plant that grows to about 2 meters tall (79 inches). Its leaves resemble those of the iris family. The basal leaves are erect, and yellowish-brown in colour. They have pink sheathing at their bases and look like swords. The leaves are flat and narrow, with a long, acute tip. Their veins run parallel to one another, and the edges can be wavy or crimped. You can identify it from other plants because of its fragrant odour when crushed, and its spadix