Pomona Sprout is Professor of Herbology and the Head of Hufflepuff House. She is described as a dumpy little witch with flyaway grey hair who wears a patched, frayed hat and shabby robes, often covered in dirt due to the time she spends tending plants in the Hogwarts greenhouses. Sprout is introduced in Philosopher's Stone, but she plays no active role until Chamber of Secrets, in which she teaches her second year students to work with Mandrake plants. She is responsible for raising the Mandrakes to full maturity, at which point their juice is used to revive the petrified victims of the basilisk.
Sprout subsequently appears in Goblet of Fire in which, as the Hufflepuff Head of House, she comforts Amos Diggory and his wife after the death of their son, Hufflepuff student Cedric Diggory, whom she knew well. In Order of the Phoenix, Sprout is a non-vocal supporter of Harry's story about Voldemort's resurrection. Like many teachers at Hogwarts, she detests Umbridge's presence and does her best to disobey her. After the raid of Hogwarts in Half-Blood Prince, Sprout is a staunch advocate of keeping Hogwarts open. She also supports the suggestion that Dumbledore should be laid to rest at Hogwarts. Sprout attends Dumbledore's funeral, where she appears cleaner than she has ever been seen before.
In Deathly Hallows, she chases Snape away from Hogwarts with Professors McGonagall and Flitwick. Informed that Voldemort and his Death Eaters are coming to besiege Hogwarts, she uses her knowledge of magical plants by improvising offensive botany, and, with the help of several students, throws Mandrakes, Snargaluff pods, and Venomous Tentaculas off the castle walls at the approaching Death Eaters. The epilogue of Deathly Hallows reveals that Neville Longbottom has become the new Herbology teacher at Hogwarts. The circumstances of Sprout's departure from the job are not revealed.
Sprout was portrayed by Miriam Margolyes in the film adaptation of Chamber of Secrets and Deathly Hallows – Part 2.