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"This is the most complicated potion I've ever seen. Lacewing flies, leeches, fluxweed, and knotgrass. Well, they're easy enough."
Hermione Granger on the ingredients of the Polyjuice Potion[src]

Fluxweed was a magical plant and member of the mustard family.[1]

Description

The flowers of a strand of fluxweed

When picked at the full moon, it could be used in the making of the Polyjuice Potion.[3] Sixteen scruples were needed to make the potion.[5]

It was also possible to use Fluxweed Syrup alone to achieve certain effects of the Polyjuice Potion.[4]

History

When trying to persuade Professor Severus Snape to attend Rubeus Hagrid's surprise birthday party in 1984 by gifting him potion ingredients, Jacob's sibling found fluxweed in the Artefact Room at Hogwarts School of Witchcraft and Wizardry with help from Ben Copper and Penny Haywood.[6]

"Today we will learn proper care for the ever mutable Fluxweed. Part of the mustard family, this plant has many used, particularly in Polyjuice Potion. It all depends on when you pick it, as you'll soon learn. Now to discuss the various ways in which Fluxweed functions."
Professor Sprout to sixth-year Herbology students[src]

Jacob's sibling observing Fluxweed in Herbology

During the 1989–1990 school year at Hogwarts School of Witchcraft and Wizardry, sixth-year Herbology students were taught about this plant by Professor Pomona Sprout, including its cultivation, uses, functions and when best to pick it.[1]

In 1992, Hermione Granger used fluxweed to brew Polyjuice Potion in order to infiltrate the Slytherin Common Room, along with its other ingredients.[3]

Etymology

The word Flux means constant change or flow, so it makes logical sense that it would be an ingredient in Polyjuice Potion.

Behind the scenes

  • The use of fluxweed in the Polyjuice Potion was chosen by J. K. Rowling to represent "the mutability of the body as it changed into another".[7]

Appearances

Notes and references

  1. 1.0 1.1 1.2 1.3 1.4 1.5 Harry Potter: Hogwarts Mystery, Year 6, Chapter 2 (Curses and Prophecies) - Herbology Lesson "Fluxweed"
  2. 2.0 2.1 2.2 Pottermore
  3. 3.0 3.1 3.2 Harry Potter and the Chamber of Secrets, Chapter 10 (The Rogue Bludger)
  4. 4.0 4.1 Harry Potter: Magic Awakened
  5. Harry Potter and the Chamber of Secrets (film)
  6. Harry Potter: Hogwarts Mystery, Year 1, Side Quest "Hagrid's Magical Birthday Party!"
  7. Pottermore - The Polyjuice Potion - J.K. Rowling's Thoughts
Herbology
Pottedmandrake.PNG
Herbologists
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)
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