Aquatic plants like Acorus calamus, Canna generalis, Iris wilsonii, and Scirpus validus can help clean up polluted water. In an experiment, these plants removed a lot of pollutants like nitrogen, phosphorus, and organic matter from the water. Acorus calamus removed 83.23% of nitrogen, Canna generalis removed 88.00% of phosphorus, and Iris wilsonii removed 88.04% of organic matter. These plants grew well in the polluted water and did a good job of cleaning it up.