The Hogwarts greenhouses are where Herbology classes were taught by Professor Sprout at Hogwarts School of Witchcraft and Wizardry. During the 1996–1997 school year, the greenhouses were also used by the Potions Club. The greenhouses have statues of long, serpentine dragons running along the peaked roofs. They are home to many exotic and magical plants including some that are extremely rare, difficult to cultivate and maintain, or even dangerous, such as the Venomous Tentacula.