Vault

Explorer

  • Characters
    • Caoimhe Keelan
    • Finlay Figgins
    • Otto Noxley
  • Creatures
    • Abraxan Winged Horse
    • Adult Acromantula
    • Adult Antipodean Opaleye
    • Adult Ape
    • Adult Basilisk
    • Adult Black Bear
    • Adult Brown Bear
    • Adult Cerberus
    • Adult Chinese Fireball
    • Adult Common Welsh Green
    • Adult Diricawl
    • Adult Hebridean Black
    • Adult Hungarian Horntail
    • Adult Norwegian Ridgeback
    • Adult Nundu
    • Adult Peruvian Vipertooth
    • Adult Polar Bear
    • Adult Romanian Longhorn
    • Adult Swedish Shortsnout
    • Adult Ukrainian Ironbelly
    • Adult Wolf
    • Adult Yeti
    • Aethonan Winged Horse
    • Alpha Acromantula
    • Alpha Wolf
    • Ancient Basilisk
    • Antipodean Opaleye Wyrmling
    • Basilisk
    • Bear Cub
    • Billywig
    • Billywig Swarm
    • Bowtruckle
    • Chinese Fireball Wyrmling
    • Clabbert
    • Common Welsh Green Wyrmling
    • Deer (Buck)
    • Deer (Doe)
    • Deer (Fawn)
    • Dementor
    • Doxy
    • Giant Plague Rat
    • Giant Rat
    • Goblin Banker
    • Goblin Guard
    • Goblin Warrior
    • Granian Winged Horse
    • Grindylow
    • Hebridean Black Wyrmling
    • Hungarian Horntail Wyrmling
    • Infant Acromantula
    • Inferi
    • Inferi Horde
    • Inferi Swarm
    • Inferius
    • Mortis Bat
    • Norwegian Ridgeback Wyrmling
    • Peruvian Vipertooth Wyrmling
    • Phoenix
    • Pit Viper
    • Plague Rat
    • Rat
    • Romanian Longhorn Wyrmling
    • Spectre Bat
    • Swarm of Grindylow
    • Swarm of Mortis Bats
    • Swarm of Small Birds
    • Swarm of Spectre Bats
    • Swarm of Tiny Birds
    • Swedish Shortsnout Wyrmling
    • Thestral
    • Ukrainian Ironbelly Wyrmling
    • Winged Foal
    • Wolf Pup
    • Young Acromantula
    • Young Antipodean Opaleye
    • Young Ape
    • Young Cerberus
    • Young Chinese Fireball
    • Young Common Welsh Green
    • Young Diricawl
    • Young Hebridean Black
    • Young Hungarian Horntail
    • Young Norwegian Ridgeback
    • Young Nundu
    • Young Peruvian Vipertooth
    • Young Polar Bear
    • Young Romanian Longhorn
    • Young Swedish Shortsnout
    • Young Ukrainian Ironbelly
    • Young Yeti
  • DM Notes
    • Miscellaneous
      • Cantrips (Level 0)
      • Level 3 Guide
      • Nyx Alternate Forms
    • Scenarios
      • Seylon Levels
        • Level 1 - Alchemy Lab
        • Level 2 - Scrying Pools
        • Level 3 - Lecture Hall
        • Level 4 - Muggle Magic
        • Level 5 - Dragon Hatchery
        • Level 6 - Seylon's Suite
        • Level 7 - Child's Bedroom
        • Level 8 - The Hive
        • Level 9 - Serpent Shrine
        • Level 10 - Trophy Gallery
      • Battle of the Bards
      • Finding Seylon's Tower
      • Icespider Hollow
      • Scene 1: Leaving the Castle
      • The Deepwater Convergence
      • The Dueling Club
      • The Forbidden Duel
      • The Hall of Living Statues
      • The Hidden Library
      • The Polyjuice Plot
      • The Pumpkin Patch
      • The Restricted Section Heist
      • The Wandering Cloak
      • Wizzlethorpe's Research Challenge
    • Session Notes
      • 2025-07-04
      • 2025-08-03
      • 2025-09-12
      • 2025-10-11
      • 2025-11-02
      • 2025-12-30
      • 2026-03-07
      • Next Session
    • Plans
    • Scenario Ideas
    • Seylons Hidden Relics - Master Plot
    • Story Arc Ideas
  • History
    • Battle of Hogwarts
    • Deathly Hallows
    • First Wizarding War
    • Global Wizarding War
    • Goblin Rebellion of 1612
    • International Statute of Secrecy
    • Invention of Quidditch
    • Salazar Slytherin's Departure
    • Second Wizarding War
    • The Founding of Hogwarts
    • The Prophecy
    • Tri-Wizard Tournament
  • Items
    • african sea salt
    • Aging Potion
    • Amortentia
    • angel's trumpet
    • Antidote of Common Poisons
    • Antidote of Uncommon Poisons
    • Astronomer's Tools
    • Babbling Beverage
    • baneberry
    • Baneberry Poison
    • Baruffio's Brain Elixir
    • bat spleen
    • Beautification Potion
    • Befuddlement Draught
    • Beguiling Bubbles
    • belladonna essence
    • bicorn horn
    • billywig sting
    • Blemish Blitzer
    • Blood-Locked Jewelry Box
    • Blood-Replenishing Potion
    • Bloodroot Poison
    • boom berry
    • boomslang skin
    • bubotuber pus
    • bundimun secretion
    • bursting mushroom
    • Chains of Sand - The Binding Practices of the Pharaoh-Wizards
    • chinese chomping cabbage
    • chizpurfle carapace
    • Cloaks
    • Confusing Concoction
    • cowbane
    • Cupid Crystals
    • Curse-breakers' Tools
    • Death-Cap Draught
    • Demiguise Cloak
    • Disillusionment Cloak
    • Diviner's Kit
    • doxy egg
    • Doxycide
    • Dr. Ubbly's Oblivious Unction
    • dragon claw
    • Draught of Living Death
    • Draught of Peace
    • Dreamless Sleep Potion
    • Drink of Despair
    • Dust of Disappearance
    • Elder Wand
    • Elixir to Induce Euphoria
    • erumpent horn
    • Erumpent Potion
    • Essence of Dittany
    • Essence of Insanity
    • ethanol
    • exploding ginger eyelash
    • Exstimulo Potion
    • Fairy Necklace
    • fairy wing
    • fanged geranium fang
    • Fatiguing Fusion
    • Felix Felicis
    • Fire Protection Potion
    • fire seed
    • flobberworm mucus
    • flying seahorse
    • Forgetfulness Potion
    • frog brain
    • full-moon fluxweed
    • Fungiface Potion
    • galanthus nivalis
    • Garrotting Gas
    • Gaunt's Ring
    • giant purple toad wart
    • Gillyweed
    • Girding Potion
    • Gregory's Unctuous Unction
    • griffin claw
    • gurdyroot
    • Hate Potion
    • Heartbreak Teardrops
    • hemlock
    • Herbicide Potion
    • Herbologist's Tools
    • Hiccoughing Solution
    • honeywater
    • Horcruxes
    • Hufflepuff's Cup
    • Ingredients
    • Invigoration Draught
    • Invisibility Cloak
    • Invisibility Potion
    • jobberknoll feather
    • Kissing Concoction
    • knotgrass
    • lacewing fly
    • lethe river water
    • lionfish spine
    • lovage
    • Mandrake Restorative Draught
    • mandrake root
    • Memory Potion
    • Ministry Dispatch Logs - Eastern European Operations, 1993-1994
    • mistletoe berry
    • moonseed berry
    • Moonseed Poison
    • moonstone
    • Murtlap Essence
    • murtlap tentacle
    • nettle
    • newt spleen
    • Noble Wizarding Houses of Britain
    • Noxious Potion
    • octopus
    • Oculus Potion
    • Pen with Initials ST
    • peppermint
    • Pepperup Potion
    • Pet Tonic
    • Phantom Draught
    • Philosopher's Stone
    • Polyjuice Potion
    • poppy head
    • porcupine quill
    • Potion Book — Fifth Year Potions
    • Potion Book — First Year Potions
    • Potion Book — Fourth Year Potions
    • Potion Book — Second Year Potions
    • Potion Book — Seventh Year Potions
    • Potion Book — Sixth Year Potions
    • Potion Book — Third Year Potions
    • Potion Books
    • Potioneer's Kit
    • Potions
    • pufferfish eye
    • Ravenclaw's Diadem
    • re'em blood
    • Regerminating Potion
    • Resurrection Stone
    • Riddle's Diary
    • Ring of Agonizing Deceit
    • Ring of Arcane Recall
    • Ring of Dominion
    • Ring of Temporal Echo
    • Ring of Unyielding Ward
    • Ring of Veiled Truth
    • Ring of Wild Communion
    • root of asphodel
    • runespoor egg
    • salamander blood
    • scarab beetle
    • scurvy grass
    • Sea Glass Marble
    • Shield Cloak
    • Shrinking Solution
    • shrivelfig
    • Silk Cloak
    • Skele-Gro
    • Sleeping Draught
    • sloth brain
    • Slytherin's Locket
    • sneezewort
    • sopophorous bean
    • spirit of myrrh
    • staghorn mushroom
    • star grass
    • Star Grass Salve
    • streeler shell
    • Strengthening Solution
    • Swelling Solution
    • syrup of arnica
    • syrup of hellebore
    • The Skye Affair - A Sealed MACUSA Inquiry, 1993
    • Thistlewood's Trick Fiddle
    • Tool
    • Tri-Wizard Cup
    • Twilight Moonbeams
    • Twin Vanishing Chests
    • unicorn hair
    • valerian root
    • venomous tentacula leaf
    • Veritaserum
    • vervain infusion
    • Vitamix Potion
    • Volubilis Potion
    • wartcap
    • weed-of-sorrows
    • Weedosoros
    • Wideye Potion
    • wiggentree bark
    • Wiggenweld Potion
    • Winter Cloak
    • Wit-Sharpening Potion
    • Wolfsbane Potion
    • woodlice extract
    • wormwood infusion
    • Wound-Cleaning Potion
  • NPCs
    • Agatha
    • Albus Dumbledore
    • Alecto and Amycus Carrow
    • Antonin Dolohov
    • Argus Filch
    • Arthur Weasley
    • Augustus Rookwood
    • Bellatrix Lestrange
    • Bill Weasley
    • Bixby Wizzlethorpe
    • Blithe Thimblethorn
    • Callum Vane
    • Cedrella Wickens
    • Corban Yaxley
    • Daisy Dodderidge
    • Declan MacMillan
    • Dolores Umbridge
    • Draco Malfoy
    • Ekrizdis
    • Elias Flint
    • Fenrir Greyback
    • Filius Flitwick
    • Firenze
    • Garrick Ollivander
    • George Weasley
    • Ginny Weasley
    • Grimbella Thistlepin
    • Gringott
    • Harry Potter
    • Hepzibah Smith
    • Hermione Granger
    • Herpo the Foul
    • Horace Slughorn
    • Isolde Kettleburn
    • James Potter
    • Juniper Selwyn
    • Katya Mirnova
    • Kingsley Shacklebolt
    • Lily Potter
    • Lucius Malfoy
    • Luna Lovegood
    • Madam Rosmerta
    • Merlin
    • Minerva McGonagall
    • Miriam Pike
    • Molly Weasley
    • Morgana Carrow
    • Narcissa Malfoy
    • Neville Longbottom
    • Newt Scamander
    • Nicolas Flamel
    • Nymphadora Tonks
    • Nyx
    • Oleg Mirnov
    • Percy Weasley
    • Perenelle Flamel
    • Pomona Sprout
    • Primrose Calloway
    • Rafael Santos
    • Remus Lupin
    • Ron Weasley
    • Rowena Ravenclaw
    • Rubeus Hagrid
    • Salazar Slytherin
    • Severus Snape
    • Seylon Vane
    • Silas Carrow
    • Sybill Trelawney
    • Tamsin Greaves
    • Teddy Lupin
    • Thaddeus Bundy
    • Theo Turner
    • Tobias Crane
    • Tom Riddle
    • Walden McNair
  • Organizations
    • Bellatrix's Children
    • Death Eaters
    • Department for the Regulation and Control of Magical Creatures
    • Dumbledore's Army
    • Gryffindor House
    • Hufflepuff House
    • Knights of Walpurgis
    • MACUSA
    • Ministry of Magic
    • Order of the Phoenix
    • Ravenclaw House
    • Slytherin House
    • The Hogwarts Founders
    • The New York Ghost
    • The Wizards' Council
    • The Wizengamot
  • Places
    • Azkaban
    • Chamber of Secrets
    • Diagon Alley
    • Flourish and Blotts
    • Forbidden Forest
    • Frostwell Village
    • Gringotts Wizarding Bank
    • Hogsmeade
    • Hogwarts
    • June's Midnight Market
    • Knockturn Alley
    • Little Hangleton
    • Ollivanders
    • Ravenclaw Common Room
    • Seylon's Tower
    • The Leaky Cauldron
    • The Restricted Section
    • The Three Broomsticks
    • Weasley's Wizard Wheezes
  • Session Recaps
    • Session 1 - First Years and Flying Books
    • Session 2 - Forest Ambush and Forbidden Tomes
    • Session 3 - Deepwater and Deeper Secrets
    • Session 4 - The Heist and the Hidden Tower
    • Session 5 - Dragons and Muggle Science
    • Session 6 - Midnight Markets and Missing Friends
    • Session 7 - Through Portals and Ice
    • Session 8 - Guardians and Betrayal
    • Session 9 - Death, Rescue, and Revelations
    • Session 10 - The Tower's End and The Hidden Library
  • Spells
    • Abscondi
    • Accio
    • Aguamenti
    • Alohomora
    • Anapneo
    • Appare Vestigium
    • Apparition
    • Arania Exumai
    • Arresto Momentum
    • Avada Kedavra
    • Avis
    • Azreth
    • Bombarda
    • Brackium Emendo
    • Cantis
    • Capacious Extremis
    • Capto
    • Carpe Retractum
    • Cave Inimicum
    • Cistem Aperio
    • Colloportus
    • Colloshoo
    • Colovaria
    • Confringo
    • Confundo
    • Conjunctivia
    • Crinus Muto
    • Crucio
    • Defodio
    • Densaugeo
    • Deprimo
    • Depulso
    • Devicto
    • Diffindo
    • Digitus Wibbly
    • Diminuendo
    • Dissonus Ululatus
    • Draconifors
    • Duro
    • Ebublio
    • Engorgio
    • Episkey
    • Epoximise
    • Evanesco
    • Exhilaro
    • Expecto Patronum
    • Expelliarmus
    • Expulso
    • Ferula
    • Fianto Duri
    • Fidelius Mysteria Celare
    • Finestra
    • Finite Incantatem
    • Flagrate
    • Flipendo
    • Fortissimum
    • Fumos
    • Furnunculus
    • Geminio
    • Genu Recurvatum
    • Glacius
    • Glisseo
    • Herbivicus
    • Homenum Revelio
    • Ignis Furore
    • Ignis Laqueis
    • Illegibilus
    • Immobulus
    • Impedimenta
    • Imperio
    • Impervius
    • Inanimatus Conjurus
    • Incarcerous
    • Incendio
    • Incendio Glacia
    • Infirma Cerebra
    • Intus Sunt
    • Langlock
    • Lapifors
    • Legilimens
    • Levicorpus/Liberacorpus
    • Locomotor
    • Locomotor Mortis
    • Locomotor Wibbly
    • Lumos / Nox
    • Lumos Maxima
    • Major Splinch
    • Melofors
    • Mimblewimble
    • Minor Splinch
    • Mobilicorpus
    • Molliare
    • Muco Volatilis
    • Muffliato
    • Ne Ustio
    • Nebulus
    • Novum Spirare
    • Obliviate
    • Obscuro
    • Omnifracto
    • Oppugno
    • Orbis
    • Orchideous
    • Partis Temporus
    • Pellucidi Pellis
    • Pereo
    • Perfusorius
    • Periculum/Verdimillious
    • Petrificus Totalus
    • Piertotum Locomotor
    • Point Me
    • Prior Incantato
    • Protego
    • Protego Maxima
    • Protego Totalum
    • Reducio
    • Reducto
    • Relashio
    • Rennervate
    • Reparifarge
    • Reparifors
    • Reparo
    • Repello Inimicum
    • Repello Muggletum
    • Revelio
    • Rictusempra
    • Riddikulus
    • Saggitario
    • Salvio Hexia
    • Scourgify
    • Sectumsempra
    • Serpensortia
    • Silencio
    • Slugulus Eructo
    • Sonorus/Quietus
    • Specialis Revelio
    • Spongify
    • Stupefy
    • Tarantallegra
    • Tergeo
    • Transmogrify
    • Ventus
    • Vera Verto
    • Vigilatus
    • Vulnera Sanentur
    • Wingardium Leviosa
Vault / Items / Knotgrass

knotgrass

Updated Feb 7, 2026

knotgrass

Alchemy ingredient.

Rarity: common

Used in: Polyjuice Potion

On this page

    Backlinks

    • Potion Book — Sixth Year Potions