Knotgrass

Knotgrass is a plant with magical proprieties. It is used in potion-making, being an essencial ingredient of the Polyjuice Potion and in the brewing of alcoholic beverages such as Knotgrass Mead.

Appearances

 * Harry Potter and the Chamber of Secrets
 * Harry Potter and the Chamber of Secrets (film)
 * Harry Potter and the Chamber of Secrets (video game)
 * Harry Potter and the Goblet of Fire
 * The Wizarding World of Harry Potter