Greenhouse Three is where Herbology classes are taught to every student, except first-years, because it is used to house several spices of magical plants that were deemed too dangerous for them to handle.[1] The room has more dangerous species, such as the Venomous Tentacula, as it is for the advanced students. First year students take the class in Greenhouse One, which has no dangerous material.[2]


The greenhouse has four areas:

Greenhouse3 CoS-GBA

A Venomous Tentacula in Greenhouse Three (Chamber of Secrets video game; GBA version)

The Herbology Classroom

Main article: Herbology classroom
This area consists on a square-shaped room, with some tables for students and one Venomous Tentacula.

Flora Faction

Main article: Flora Faction
This area contains all kind of flowers and several mandrakes.

Evergreen Environment

Main article: Evergreen Environment
This is an area with a lot of evergreen trees.

Vine Vicinity

Main article: Vine Vicinity
This is the largest area. It has a lot of mandrakes, slugs and flora.


Screenshot 707

1992–1993 school year

Pomona Sprout taught her second year students how to pot young Mandrakes.

1993 and after

Pomona Sprout and eventually Neville Longbottom taught advanced Herbology here.

Behind the scenes



Greenhouse Three in the 1996-1997 school year

Notes and references

Herbert Beery · Miranda Goshawk · Elladora Ketteridge · Beaumont Marjoribanks · Nepali wizard · Phyllida Spore · Tilden Toots · Hadrian Whittle · Sir Winogrand · Selina Sapworthy
Herbology at Hogwarts
Herbology Award · Herbology Lesson Cup · Herbology Race Cup · Herbology Store
Greenhouses One · Two · Three · Four · Five · Six · Seven · Professor's Office
Professors Herbert Beery · Pomona Sprout · Neville Longbottom
Textbooks Flesh-Eating Trees of the World · Goshawk's Guide to Herbology · Magical Water Plants of the Mediterranean · One Thousand Magical Herbs and Fungi · Winogrand's Wonderous Water Plants
Plants studied at Hogwarts
Bouncing Bulb · Bubotuber · Devil's Snare · Fire Seed Bush · Flitterbloom · Mandrake · Mimbulus Mimbletonia · Nettle · Puffapod · Screechsnap · Self-fertilising shrub · Shrivelfig · Snargaluff · Spiky Bush · Spiky Prickly Plant · Umbrella Flower · Valerian · Venomous Tentacula · Walking plant · Wormwood · Whomping Willow · Wiggentree · Wild rice