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"A small grey cactus in a pot, except that it was covered with what looked like boils rather than spines."
— Description[src]

The Mimbulus mimbletonia was a very rare magical plant, surmised to have originated in Assyria.[1]


A Mimbulus mimbletonia plant

It was most notable for its pulsating and squirming nature and its unique defence mechanism. When prodded, a substance called Stinksap was squirted out from the boils on the surface of the plant. Stinksap was a non-poisonous liquid and was described as dark green and smelling like "rancid manure".[1]


At Hogwarts School of Witchcraft and Wizardry, students were taught about how to handle and care for this plant in Herbology in third-year Herbology lessons.[2][3] During the 1986–1987 school year, Professor Pomona Sprout taught students about how to properly handle this plant, along with how to extract Stinksap from it.[2]

Neville Longbottom holding a Mimbulus mimbletonia in 1995

After receiving one of them as a gift during the summer of 1995, Neville Longbottom demonstrated its defence mechanism to Harry Potter on the Hogwarts Express, accidentally covering the compartment and the people in it with Stinksap. Ginny Weasley had to clean up the Stinksap with the Scouring Charm.[1]

Mimbulus mimbletonia was used as the password for the Gryffindor's common room at the start of the 1995–1996 school year, which Neville was overjoyed by, as he could finally remember the password.[4]

By the end of the school year in 1996, he discovered that further on in the plant's development, it makes "odd crooning noises when touched."[5]

The plant was also mentioned by Hermione Granger in 1997, when retorting to Ron Weasley that she doubts that he "would find a woman who sulked for half an hour because Madam Rosmerta didn't laugh at their joke about the hag, the healer and the Mimbulus mimbletonia" after his comment about women being easily upset.[6]

Professor Neville Longbottom taught Mimbulus mimbletonia to third-year Herbology students in the 2010–2011 school year. He said if lucky, it would bloom this spring, which would be a very rare occurrence. The lesson was interrupted by Linderina Crane who came to investigate Neville's role in the Hogsmeade attack. When the Mimbulus mimbletonia bloomed, Professor Longbottom held a Blooming Party, which was again disrupted when Victor Gridley's disguise was removed by students and he and his associate Mr Pronk kidnapped Longbottom.[3]

During the Calamity which affected the wizarding world in the 2010s, Mimbulus mimbletonia plants appeared as Confoundables, guarding branches of Bowtruckles. They could be repelled by volunteer members of the Statute of Secrecy Task Force by casting the Ebublio Jinx on them. A curse Confoundable also transfigured Pomona Sprout into a Mimbulus mimbletonia plant, requiring the volunteers to cast the General Counter-Spell to end the spell's effect on the professor.[7]


Notes and references

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Harry Potter and the Order of the Phoenix, Chapter 10 (Luna Lovegood)
  2. 2.0 2.1 2.2 Harry Potter: Hogwarts Mystery, Year 3, Chapter 4 (Filching from Filch) - Herbology Lesson "Stinksap"
  3. 3.0 3.1 3.2 Harry Potter: Magic Awakened
  4. Harry Potter and the Order of the Phoenix, Chapter 11 (The Sorting Hat's New Song)
  5. Harry Potter and the Order of the Phoenix, Chapter 38 (The Second War Begins)
  6. Harry Potter and the Half-Blood Prince, Chapter 21 (The Unknowable Room)
  7. Harry Potter: Wizards Unite
  8. See this video
Blossom Degrasse · Miranda Goshawk · Quiac Marinus · Beaumont Marjoribanks · Nepali wizard · Gethsemane Prickle · Sanjay Shanker · Selina Sapworthy · Phyllida Spore · Tilden Toots · Hadrian Whittle · Sir Winogrand
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 · Unnamed Professor (19th century)
Textbooks Flesh-Eating Trees of the World · Ingredient Encyclopedia · One Thousand Magical Herbs and Fungi · Winogrand's Wondrous Water Plants
Plants studied and grown at Hogwarts
Aconite · Alihotsy · Asphodel · Belladonna · Bouncing Bulb · Bubotuber · Bubotuber pus · Chinese Chomping Cabbage · Cowbane · Devil's Snare · Dirigible plum · Dittany · Fanged Geranium · Fat cactus-like plant · Fire seed bush · Flitterbloom · Floo · Flutterby bush · Fluxweed · Gillyweed · Ginger · Hemlock · Honking daffodil · Ivy · Knotgrass · Lady's Mantle · Lavender · Leaping Toadstool · Lovage · Mandrake · Mimbulus mimbletonia · Mistletoe · Moly · Nettle · Peppermint · Puffapod · Raspberry · Rose · Sage · Screechsnap · Scurvy grass · Self-fertilising shrub · Shrivelfig · Snargaluff · Sneezewort · Sopophorous plant · Sopophorous bean · Spiky Bush · Spiky Prickly Plant · Stinksap · Sugar Shrub · Toad-eating plant · Tormentil · Umbrella Flower · Valerian · Vampiric vegetation · Venomous Tentacula · Walking plant · Wax vegetables · Whomping Willow · Wiggentree · Wild rice · Wormwood
Spells taught in Herbology at Hogwarts
Fire-Making Spell (Incendio) · Herbivicus Charm (Herbivicus) · Incendio Duo Spell (Incendio Duo) · Lumos Solem Spell (Lumos Solem) · Severing Charm (Diffindo)