People use the primary roots of horseradish in cooking. Using cultivated plants, it is okay. But in nature, wild edible horseradish has different aerial genotypes. If foragers dig roots, then horseradishes may disappear from the site.
Leaves of horseradish are easily recognizable. To make it sure that you have found horseradish, crush a leaf with your fingers. The smell of horseradish is unmistakable when the recognition is correct. Leaves of horseradish contain eight health-promoting compounds. Åhlberg (2020a, 100 – 102) names them and how these compounds promote health, often also biochemical mechanisms of how.