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"Bubotuber pus is a thick, yellowish green liquid, which smells strongly of petrol. It is very valuable, and can be used as an effective remedy against acne."
— Description[src]

Bubotuber pus was a thick, yellowish-green, petrol-smelling substance squeezed from the swellings of the magical bubotuber plant.[1]


It was extremely valuable for its acne-curing abilities, but if touched undiluted, it could leave painful boils on the skin. For this reason, dragon-hide gloves were recommended to be worn while handling raw bubotuber pus. Nevertheless, treated bubotuber pus was recommended for curing the most severe cases of acne, rather than spells, due to the fact that spells were risky in acne-removal, such as in the case of Eloise Midgen cursing her nose off.[1]


Professor Sprout: "Bubotubers. They need squeezing. You will collect the pus—"
Seamus Finnigan: "The what?"
Professor Sprout: "Pus, Finnigan, pus, and it's extremely valuable, so don't waste it. You will collect the pus, I say, in these bottles. Wear your dragon-hide gloves; it can do funny things to the skin when undiluted, bubotuber pus."
Pomona Sprout and Seamus Finnigan in 1994[src]

The pimple-curing properties of bubotuber pus was first discovered by the Potioneer Sacharissa Tugwood, who also created some of the earliest Beautifying Potions.[5][6][7]

During the 1994–1995 school year, fourth-years attending Hogwarts collected bubotuber pus in bottles during Herbology with Professor Sprout. When the students were squeezing the swellings, it was described as "disgusting, but oddly satisfying".[1]

In the same school year, Hermione Granger was sent an envelope covered with this substance from an unknown person, who believed the rumour that she had relationships with both Harry Potter and Viktor Krum, as falsely and maliciously reported by Rita Skeeter. Her touching this substance caused yellow boils to form on her hands, which made it looked like she was wearing thick, knobbly gloves.[2]

In August 1996, Molly Weasley mentioned that a mixture of gravy and bubotuber pus was being falsely sold as a Protective Potion in the streets of Diagon Alley, which would supposedly protect the drinker from the effects of dark magic, despite having no effect whatsoever.[3]

During the Calamity in the 2010s, bubotuber pus was heavily collected and used as a potion ingredient by volunteer members of the Statute of Secrecy Task Force, where it was mainly used to brew the Healing Potion.[4]

Behind the scenes

  • In the Goblet of Fire video game, there are exploding cauldrons that are said to be filled with a solution mixed with the pus that causes them to be explosive. Said cauldrons can be used on enemies, but are mainly for destroying part of the environment to solve puzzles and/or spawning beans to collect.


Notes and references

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)