The study of magical plants and how to take care of, utilize and/or combat them. There are at least three greenhouses, holding a variety of magical plants of varying degrees of lethality.

Teacher: Neville Longbottom (open)

Moderator: Sara Cromwell

The Forbidden Forest is a large, dark forest to the east of Hogwarts Castle. It is usually referred to simply as "the Forest" and in the film series as the "Dark Forest". It is strictly forbidden to all students, except during Care of Magical Creatures lessons and, on rare occasions, detentions.

Among the plant species within the Forest are trees such as beech, oak, pine, sycamore, and yew, as well as undergrowth including knotgrass and thorns. Though the Forest is vastly dense and wild, there are a few paths and clearings. Rubeus Hagrid, who frequently travels into the Forest for various reasons mostly makes these. The Forest is also home to an assortment of creatures.

Moderator: Sara Cromwell

Hagrid lives in a small wooden hut on the grounds, on the edge of the Forbidden Forest, with his boarhound, Fang, who, belying his appearance, is a coward. He has a pumpkin patch behind his hut, with a fence around it. After the Death Eater's attack on Hogwarts, Hagrid's Hut is severely burned as the Death Eaters escape from the grounds. However, the hut was rebuilt. Hagrid, now in his 60's still lives there.

Moderator: Sara Cromwell

The lake is located on the south side of the castle, which stands on a cliff overlooking the water. It is about half a mile in diameter and the Hogwarts plumbing network drains into it. A number of magical creatures inhabit the lake, including a surprisingly friendly giant squid, often seen near the surface, a colony of merpeople inhabiting the bottom, and a population of grindylows.

Moderator: Sara Cromwell

The Quidditch pitch is where Quidditch games are held, and where teams practice. There are three golden hoops, about 50 feet high, at each end used for scoring, and stands surrounding it, providing seating for spectators. It houses the locker rooms for the four House teams and the offices of the four team captains. There are locker rooms off the grounds of the Quidditch pitch where team members change for practices and games.

Moderator: Sara Cromwell