Present paper is an attempt to evaluate the adsorption of heavy metals like Cadmium (Cd), chromium (Cr), zinc (Zn), and lead (Pb) by the dry biomass of terrestrial plants Canna indica commonly called Saka siri. Very less literature is available for the study on the absorption/adsorption of heavy metals by this plant. The present experimental study was conducted to assess the adsorption capacity of dry biomass of Canna indica to compare and identify their potential to improve the water quality by removing the impurities. The paper critically evaluates the water-purifying capacity of dry-biomass of this plant basically knows for its ornamental identity. Manuscript will be helpful in showing the water purifying capacity of dry biomass of C. indica and also will evaluate the best results of adsorption shown by varying quantity of the adsorbent.