Vacha, Sweet flag (Acorus Calamus) – Uses, Benefits, Dosage and Properties Description of Plant It is soft plant of 2-4ft height found in moist edges of streams and lakes. Green colored leaves with wavering edges are 2-4ft long and 1inch in breadth. Flowers are small, dense and whitish in color. Fruits are pulpy with numerous seeds. Its underground hairy and brownish root resembles to ginger rhizome. Leaves and roots of this plant are aromatic. Plant with very strong aroma is