A Guide to Quest Herbs

This is just a listing I've been drawing up of plants, herbs and cures, poisons and so on not found in Herbalism, but rather in various quests throughout WoW. It's hardly comprehensive, but I figured that if anyone wanted RP fuel (i.e. if you've a particular malady that needs remedying and a long journey for a cure is in store, or if you're in a zone on a campaign between events and gathering something up might be useful), that such a list might come in mildly handy.  I've a cross-referencing list afterward so you can search by zone or use if you like.

Additional notes: If you know of any not on this list, shout and I'll try to add them as soon as possible; same thing goes for any errors. Some OOC information has been given a slightly IC flavor. Plain and common things such as carrots aren't in here.  I've tried to be as accurate as I can but some things are unclear, ex. whether something is magic, or simply natural in its healing properties. Lastly, I'm not suggesting that everyone must take things like burning seeds or Emerald Acorns IC--it's just there for the sake of being as complete a list as possible. Use it if you want, how you want, but common sense applies.

Key
*            - Magic
*            - Healing
*            - Poison
*            - Dark Magic / Plague


Aloe Thistle *
Description - Spiked, thick green leaves growing in clusters
Location - Karnum's Glade, Desolace
Uses - Unspecified, but if similar to reality, then the liquid within may be used topically for burns and other skin issues.
Source - Quest: A Time to Reap

Azure Snapdragon *
Description - Deep blue, faintly-glowing orchid-like plants with violet-blue, oak-like leaves
Location - Near Azure Watch, Azuremyst Isle
Uses - The bulbs of these rare plants are claimed by some to be a panacea, or cure-all. They are used to waken a night elf from her coma, though mental trauma seems to knock her back out, so the herb's efficacy could be debated.
Source - Quest: An Alternative Alternative

Bileberries *
Description - Disgusting fruits with pus-like ichor and leathery skin
Location - Blackhorn's Penance, Mount Hyjal
Uses - Harvested from purple, orchid-like plants known as Wailing Weeds, which are corrupted by demonic presence. These plants fight back and are mobile once attacked, and fighting one will agitate others nearby as well. The berries, once harvested, are crushed into a pulpy liquid which absolutely stinks. This "bottled Bileberry Brew" can be poured down the throat of the newly dead to reanimate them as a thrall, for example for questioning, for a mere minute or two. The body will remain broken, voice wavering, and mind subjugated.
Source - Quests: Seeds of Their Demise/A New Master

Bitterblossom * * (?)
Description - A tall, stalklike reedy plant with sagging foliage and spiky, lavender-colored flowers
Location - Goldrinn's Shrine, Mount Hyjal
Uses - The buds are heavy with stored liquid; the plant grows right around the water's edge. It is combined with Stonebloom and Darkflame Embers (a cool-to-the-touch stone even when still burning, found in Twilight braziers) to create a draught which, when drunk, snaps Old-God-brainwashed people of various races from their state. It is unknown whether it can cure advanced madness, or merely wipes away brainwashing.  The "cleansing draught" must be boiled, and is chunky and reeks of rotted cabbage.
Source - Quests: From the Mouth of Madness/Free Your Mind, the Rest Follows

Blackroot *  
Description - A grassy herb growing along riverbanks
Location - Western rivers of Grizzly Hills
Uses - The juice of this plant is a laxative.
Source - Quest: Just Passing Through

Bloodberries *    
Description - Red berries on thick green bushes
Location - Isle of Quel'Danas
Uses - This bush grows wild in many areas of Azeroth, and has long been considered merely a nuisance. Those exposed to the power of the Sunwell, however, and thus potentially other arcane sources, can be distilled into an elixir that is consumed to enhance one's natural abilities.
Source - Quest: Open for Business

Bloodbloom *
Description - Small leafy plant, green and red, with hues of orange and violet
Location - Valley of the Four Winds
Uses - This plant leaches minerals out of the soil, leading to its dark crimson tint. It is used along with Cave Lily, Ghostcap and Violet Lichen to create a "wounding poison" used on Virmen.
Source - Quest: Haohan's Vote III: Pure Poison

Bloodkelp *    
Description - A reddish seaweed
Location - Carried by the naga of Alcaz Island, Dustwallow Marsh
Uses - Bloodkelp can be used as a reagent to power divination spells.  It can also stain clothing red, perhaps finding use as a dye, were it not so difficult to obtain.
Source - Quest: I See Alcaz Island in Your Future

Bloodthistle *    
Description - Small green bush with bright scarlet flowers resembling roses or tulips, with yellow pistils and a pungent smell
Location - Eversong Woods, near areas of high Sindorei magic usage
Uses - This is often used by blood elves to enhance their magical abilities for a short time. It causes withdrawal afterward; frequent users are sometimes known as Thistleheads, and there's some indication that Shattrath, at least, rules Bloodthistle illegal.
Source - Various lore sources, including Quest: Of Thistleheads and Eggs...

Bogblossom *  
Description - A very fragile plant, green with an orange cap
Location - Growing atop the giant mushrooms of Zangarmarsh
Uses - These may explode violently if mishandled. When combined with equal parts ancient lichen and dreaming glory, and then mixed in a vial of moonwell water, Bogblossom creates the Ward of Wakening: a viscous, shimmering potion. When this is forcefed to a druid whose spirit is in the Emerald Dream, it forcibly wakens them, leaving them vulnerable for a time as their spirit returns.
Source - Quest: The Ward of Wakening

Briaroot *  
Description - Unknown
Location - Azshara, presumed
Uses - Carried by the Blackmaw furbolg of Azshara, Briaroot is brewed into a bitter, pungent herbal tea with spicy overtones. This tea will place one into a trancelike state where the imbiber will begin to speak the tongue of the Blackmaw furbolg.
Source - Quest: A Pale Brew

Burning Seed *      
Description - A tiny, brown seed
Location - Firelands
Uses - These seeds emanate power enough to mark them as having come from Nordrassil itself, though they are twisted black by the Firelands' flames, harnessing the essence of fire granted to the Druids of the Flame. Consumption by normal druids twists their feline form, at least, into one of fire.
Source - Item Tooltip

Burstcap Mushroom *    
Description - A soft, spongy fungus, black and pulsating, with sickly-green outgrowths
Location - Zangarmarsh
Uses - These can explode if not handled properly. The Darkspear witch doctor situated in Zangarmarsh insists that these are powerful, and uses them to read omens.
Source - Quest: Burstcap Mushrooms, Mon!

Cactus Apple
Description - Small, red fruits resembling apples
Location - Cacti of Durotar
Uses - It is said that nothing will cool you off quicker than a Cactus Apple Surprise made from these fruits. Whether this is a magical effect or a healing one, or simply fresh taste, is unknown.
Source - Quest: Galgar's Cactus Apple Surprise

Cave Lily *
Description - A beautiful, small white lily
Location - Dark, damp caves in Valley of the Four Winds
Uses - Combined with Bloodbloom, Ghostcap and Violet Lichen to create a "wounding poison" used on Virmen.
Source - Quest: Haohan's Vote III: Pure Poison

Cave Mushroom *
Description - Unobtrusive fungus: short, dull pink-grey with paler spots
Location - Clustered in pairs in the caves of the Storm Peaks
Uses - These are ingested to slow the poison of Jormungar stings long enough for antitoxin to be obtained and administered.
Source - Quest: Cave Medicine

Coconut Milk
Description - Viscous, white liquid
Location - Coconuts such as those growing in Un'goro Crater
Uses - Can be used as a replacement for mechanical oil in some machines, as well as nutritional.
Source - Quest: Repairing A-Me 01

Crying Violet *
Description - Small, delicate purple blooms with yellow eyes
Location - Felwood
Uses - These flowers, which shiver their petals at the slightest sound, are used to 'bind words' to carry the voices of the user over a distance to the listener. It may also be used along with other arcanist-favored herbs to infuse glass vials. These vials can then be used to gather and purify fel-corrupted moonwell water, used to cleanse demonic corruption and so on.
Source - Quest: Crying Violet/Purity From Corruption

Dahlia's Tears *
Description - Golden butter-colored flower with broad green leaves
Location - Ruby Dragonshrine, Dragonblight
Uses - Growing in soil cleansed by red dragons' breath, this plant imparts a feeling of hope even on merely touch. They can be infused with dragon magic to create a powerful, magical cleansing cure.
Source - Quest: Dahlia's Tears

Darkblossom *
Description - A spiky, dark violet flower with yellow pistil and green leaves
Location - Darkmoon Island
Uses - Used for everything from treating wounds to seasoning food, as well as being pretty to look at, the exact blends used for this flower's various applications are known only to members of the Darkmoon Faire.
Source - Quest: Herbs for Healing

Death Cap
Description - Bright gold with white spots and blood-red "veins" at the base
Location - Caves of Darkshore
Uses - Presumably toxic, this fungus was combined with Scaber Stalks to produce a potion of unknown purpose by local night elves
Source - Quest: Cave Mushrooms

Doom Weed
Description - A small, spiky green-and-violet bush
Location - Graves of Tirisfal, north of Brill
Uses - Rumored to be used by the Forsaken for unknown, but undoubtedly nefarious, purposes. Easily confused with many other local plants, including the similarly-named Gloom Weed.
Source - Quest: Doom Weed

Dreadshade *
Description - Red, spike-petaled, green-leaved and -pistiled flower
Location - Venomous Ledge, Dread Wastes
Uses - This musky-scented flower is an extremely potent poison. It is said that even one drop of dreadshade nectar can stop a kuchong's heart. They appear to be safe to handle, but not to eat.  The exception is the local wildlife, who consume dreadshade, causing them to become quite venomous. It is unclear how the wildlife can eat it, however--perhaps having evolved a resistance, or perhaps only certain species are affected.
Source - Quest: A Shade of Dread

Dreamleaf *
Description - Green-leaved, evergreen-looking bush
Location - Around the shrine at the eastern side of the Pools of Purity, Valley of the Four Winds
Uses - A slender-branched sprig of Dreamleaf, coated in sticky leaves, can be brewed with lotus root to make a tea. This tea allows one to have "the Golden Dream," actually a vision of the Vale of Eternal Blossoms in reality. The knowledge on how to brew this tea is held by the Pandaren of New Cifera.
Source - Quest: The Golden Dream

Drycap Mushroom *
Description - Beige-pink, thick mushroom
Location - Cave at the Great Fissure of Hellfire Peninsula
Uses - This very rare mushroom can be made into a healing salve which restores strength to debilitated people, for example those who have drunk contaminated water.
Source - Quest: A Debilitating Sickness

Emerald Acorns * *
Description - Large Acorns
Location - The Emerald Dream
Uses - Infused with a powerful restorative magic, can used for healing and cleansing.
Source - Quest: Hope Within the Emerald Nightmare

Emerald Shimmercap * *
Description - An eerily-glowing green mushroom whose surface shimmers with the energies of the Emerald Dream
Location - The green pools of Felwood
Uses - This fungus is infused with the magics of the Emerald Dream, and does not feed from the fel of the pools, but rather works to cleanse it. It can be consumed as a mushroom paste to cleanse fel taint from those afflicted; it seems to bind to the energy while still in the stomach, and is then vomitted back out.
Source - Quest: A Slimy Situation

Fel Cone *
Description - A pinecone billowing with green smoke
Location - Beneath the trees of Teldrassil
Uses - Used, at least, on demons to temporarily polymorph them, twisting their form into that of a frog in the example seen.
Source - Quest: Seek Redemption!

Fenberries *
Description - Red berries on green bushes (Fenbushes)
Location - Wetlands
Uses - These bushes, growing at the water's edge, are often muddy when found--but can be washed and prepared into a dwarven folk remedy for hangovers.
Source - Quest: Fenbush Berries

Fire Lotus
Description - Unknown, but likely fiery or crimson in appearance
Location - Kun-Lai Summit
Uses - This plant is used as an incense by the Grummles of Kun-Lai to inspire bravery even in the most reluctant or cowardly of individuals.
Source - Quest: Instant Courage

Flushbloom
Description - Unknown
Location - Alterac (?)
Uses - Little is known of this herb bar that it is, or was, addictive and that Lord Aiden Perenolde of Alterac was a user.
Source - Book: Lands of Conflict

Fulgore Mushroom
Description - A small, green mushroom that gives off a soft glow
Location - Zangarmarsh, near Teldredor
Uses - Used as a light source; propogated through spores.
Source - Quest: Fulgore Spores

Fuming Toadstool *    
Description - Sickly yellow cap, cream stalk
Location - Damp areas among the crumbled stones of the Ruins of Lornesta, Darkshore
Uses - Can be mixed (with unspecified ingredients) into a salve which will close wounds and lessen pain.
Source - Quest: Unsavory Remedies

Ghostcap *
Description - Pointed and slender, grey-purple mushroom with violet spots, giving off an eerie glow
Location - Caves in the Valley of the Four Winds
Uses - Used with Bloodbloom, Cavy Lily and Ancient Lichen to create a "wounding poison" used on Virmen.
Source - Quest: Haohan's Vote III: Pure Poison

Haze Leaf *
Description - Weedy-looking, green-stemmed and purple-flowered plant
Location - Northwestern Grizzly Hills
Uses - Mixed with Waterweed fronds to create a vial of visions, then mixed with troll mojo to communicate at a distance with a particular troll. It is unknown how the elixir is attuned, nor how it can be adapted to others.
Source - Quest: Vial of Visions

Hellfire Spineleaf *
Description - A golden-brown, spine-leafed plant
Location - Southeastern Hellfire Peninsula
Uses - This rugged plant can be either consumed for sustenance or made into a salve to dull pain.
Source - Quest: Preparing the Salve

Imperial Lotus * *
Description - A stalk of pale flowers growing over "ugly" green leaves; gives off a pungent odor
Location - Ruins of Dojan, Krasarang Wilds
Uses - According to folklore, Lotus Tea will cure any Mogu poison or curse; in addition it is used to impart strength to those in pain or depressed.
Source - Quests: Herbal remedies/Lotus Tea

Kafa'kota Berry
Description - Pink berries growing on pale, grey-green bushes
Location - Kota Peak, Kun-Lai Summit
Uses - When eaten or brewed into a drink, these berries give intense energy bursts followed by periods of lethargy or even withdrawal. A "gourmet" version is brewed from berries predigested by the mountain goats and plucked from their droppings.
Source - Quest: Gourmet Kafa, various in-game lore, buffs, debuffs and tooltips

Limes
Description - Green fruit.  They're limes!
Location - Carried by pirates of Stranglethorn
Uses - Limes are crated in barrels and taken to sea, and then eaten in key lime pies or drunken in sweetened juice to prevent scurvy.
Source - Quest: The Bane of Many a Pirate

Lunar Fungal Bloom *
Description - Tiny clusters of pale silvery-white mushrooms
Location - Caves of Darkshore
Uses - These add potency to a poison-curing salve which is based on the poison itself (ex. tainted water), which is mixed with earthroot for its curative properties.
Source - Quest: Gathering the Cure

Magmolia
Description - A small, lily-like white flower
Location - Lava lakes of the Molten Front
Uses - This continues to give off heat even after removed from its heat source.
Source - Quest: Steal Magmolias

Mao-Willow
Description - Cattail-like flowering branches, fluffy light and prickly to the touch, of delicate violet and lavender shades
Location - The fields of Townlong Steppes
Uses - These are made into a soothing paste and layered between bandages to create poultices for wounds.
Source - Quest: A Proper Poultice

Marrowpetal * *
Description - Oddly heavy for its size, blue-green with bright violet petals
Location - The bottom of Stillwater Pond, Tirisfal Glades
Uses - Combined with briny sea cucumbers and Xavren's Thorn herbs, and possibly other ingredients, to create a particularly painful and virulent plague. When consumed, the concoction turns the imbiber into a ghoul; they die shortly thereafter.
Source - Quest: Variety is the Spice of Death

Meadow Marigold
Description - A large, healthy, fragrant flower, gold-orange in color
Location - Fields of Valley of the Four Winds
Uses - This is used as a dye, food flavoring and coloring, and a traditional decoration during Day of the Dead ceremonies. (OOC note: the food bit is a real-life quality of the flower. The real version tends to smell rather pungent rather than fragrant, however, so there may be various differences.)
Source - Quest: Yellow and Red Make Orange

Moonleaf
Description - A silvery-leafed, bushy plant
Location - Blackwald, Gilneas
Uses - Moonleaf grows on its own or in large patches near the tree Tal'doren. When a feral, uncured worgen is nearby, the scent of this plant aids their mind in growing clear for a time. It is also used in the ritual cure ceremony that allows worgen to gain mastery over their forms.
Source - Comic: Curse of the Worgen; Quest: Preparations

Moonpetal Lilies *
Description - White lilies with tall golden pistils, and bright magenta/flame-colored interiors
Location - Water's edge in Shadowglen (Teldrassil)
Uses - These can be combined with other (unnamed) ingredients to create an antidote to spider venom.
Source - Quest: Iveron's Antidote

Muddlecap Fungus * (?)
Description - Clusters of large, blue-gray mushrooms with orange beneath the caps
Location - Drak'agal, the waterlogged area near the Argent Stand of Zul'Drak
Uses - These mushrooms, which apparently smell quite bad, yet are eaten, can be consumed (with troll mojo or perhaps alone) to muddle the mind of the imbiber.  Tooltip and quest text seems to indicate that it's eaten for this effect, perhaps recreationally.
Source - Quest: Mushroom Mixer

Murkweed * / * (?)
Description - A small, spidery purple bush with green leaves.
Location - Eldritch Heights, Dragonblight
Uses - Toxins in Murkweed render the imbiber unconscious, so powerfully so that their spirit is "fooled" (Murkweed elixir is said to separate the body from the soul for a short time), allowing them to enter the "world of the dead" or "world of the forgotten" and speak with the spirits of the dead.
Source - Quest: The Murkweed Elixir

Mushan Urine *
Description - Not an herb.
Location - Pandaria, ex. Townlong Steppes
Uses - The urine of Mushan beasts, gathered sometimes as whole bladders from slain animals, serves as an excellent natural antiseptic.
Source - Quest: Natural Antiseptic

Musquash Root
Description - A huge, thick, spike of a root
Location - Erupting from the soil beneath Loch Modan's dam, Wetlands
Uses - When mixed with a Tear of Tilloa, it can be brewed into a poisonous drink. The creator calls it Blackclaw Stout, though this may not be well-known outside of underground warlock circles. The drink tastes simply like a stout that packs quite a punch. The imbiber then falls dizzy, feels hot, and then dies.
Source - Quest: A Noble Brew

Netherdust Bush
Description - A pink-based, blue-green-tipped bush that sparkles with nether energy
Location - Netherwing Ledge and surrounding area, Shadowmoon Valley
Uses - The pollen of the Netherdust Bush is used by Dragonmaw orc mages and shamans, for unknown purpose--perhaps as a mana source.
Source - Quest: Netherdust Pollen

Olemba Seed *
Description - Fist-sized seeds taken from pale, glowing blue cones
Location - In and around the trees of Terokkar Forest
Uses - Olemba seeds contain an oil that can be used to coat a weapon, seeming to somehow enhance the intellect and casting ability of the wielder. (Note: generally, OOC buffs aren't included in this guide, but these effects are mentioned in the quest text and NPC dialogue)
Source - Quest: Olemba Seed Oil

Pine Nuts
Description - Small nuts obtained by roasting pine cones
Location - The best are from the trees of Thunder Bluff
Uses - These can, quite simply, be eaten. (OOC note: simple foods are not generally included, either, but pine nuts are not mentioned much and so are likely not well-known)
Source - Quest: Pining for Nuts

Plague Tangle *
Description - Twisted, decayed grasses
Location - Western Plaguelands
Uses - Growing around the corpses of diseased animals, plague tangles seem to absorb the plague and can be used to generate it anew.
Source - Quest: Latent Disease

Prayerblossom * *
Description - Broad, spear-shaped leaves with a vertical stalk of butter-colored blooms
Location - Swamp of Sorrows
Uses - Said to grow skyward even in the darkest shadows, and to have an affinity with the Light (perhaps in the form of hope), these flowers are used to soothe even great pain. They are also used in cures meant to combine various elemental reagents to call upon the Light.
Source - Quest: Prayerblossom (there are A/H versions)

Razorthorn Root *
Description - A small, thorny root buried under hard-packed dirt
Location - Razorthorn Rise, Hellfire Peninsula
Uses - The roots are used as a reagent by Shattered Sun herbalist-alchemist Mar'nah, though their exact purpose is unclear. The unusual aspect is their acquisition, which often involves slaying a Razorthorn Flayer, then using its pheromone glands to entice Razorthorn Ravagers to dig the roots up.
Source - Quest: Discovering your Roots

Root Trapper Vine *
Description - Vines taken from slain lashers
Location - Azure Watch, on Azuremyst Isle
Uses - When properly treated, these vines can be broken down into a healing ointment.
Source - Quest: Medicinal Purpose

Rotberries *
Description - Small red berries growing on green bushes, which pulse with a faint, red glow
Location - Eastern Plaguelands (far northwest)
Uses - Purportedly used, along with bits of the undead, in counter-plague research.  They are said to "taste like sweet, sweet death" though whether that's a flavor or they're deadly isn't clear.
Source - Quest: Counter-Plague Research

Rot Blossom *
Description - A reddish, almost cabbagelike flower
Location - Tranquil Gardens Cemetery, Duskwood
Uses - This plant grows "in strange places" and tends to flourish on dead things. It is used to brew "zombie juice," described as an alcohol potent enough to wake the dead--except it's involved in necromancy.
Source - Quest: Gather Rot Blossoms

Ruby Lilac * *
Description - Broad, spearshaped green leaves that glow faintly red, with a veritcal stalk lined with pink blossoms
Location - Ruby Dragonshrine, Dragonblight
Uses - The power this flower holds is said to be strong enough on its own to create a vaccine for local wildlife, which protects against the plague of undeath.
Source - Quest: In Search of the Ruby Lilac

Sanguine Hibiscus
Description - Blood-red, spike-petalled flower with a "passionate" fragrance
Location - The Underbog of Zangarmarsh
Uses - Eaten by the local denizens; the Sporelings have a variety of unnamed purposes for it.
Source - Quest: Bring Me a Shrubbery!

Scaber Stalk
Description - Blue mushroom with pale, cream-colored spots and green "veins" at the base
Location - Darkshore caves
Uses - Combined with death caps to create a potion of unknown purpose, by a local night elf.
Source - Quest: Cave Mushrooms

Scalding Shroom
Description - Undersea mushroom or mushroom-like plant, with a blue stalk and golden cap
Location - Northwestern Abyssal Depths, Vashj'ir
Uses - Can be used to treat and preserve corpses.
Source - Quest: Scalding Shrooms

Serpentbloom *
Description - A low-growing green plant with red and violet tips and center
Location - The Wailing Caverns of the Barrens
Uses - Said to hold untold power in its ability to prevent druids from falling into Nightmare.
Source - Quest: Preemptive Methods

Serpent's Scale
Description - A pale-stalked, orange-brown-capped mushroom with a slightly "hairy" appearance. Pungent-smelling and soft and spongy to the touch.
Location - The Jade Forest, north of The Arboretum
Uses - Said to be healthful (though tough and not particularly tasty) to cloud serpents, providing important properties and nutrients for them.
Source - Quest: Serpent's Scale

Shadelight Truffle
Description - A faintly-glowing golden-orange fungus with a white base
Location - The Skyrange of the Valley of the Four Winds
Uses - This rare fungus is only used for flavoring foods, and is replaced by spore replanting when harvested.
Source - Quest: The Truffle Shuffle

Shimmerweed *
Description - Unknown; stored in baskets.
Location - Dun Morogh
Uses - Grown by the trolls of Dun Morogh and used in their rituals, this plant is also used by adventurous dwarves experimenting with new brews. They claim that Shimmerweed has a unique taste.  (Note: this may simply be hallucinogenic rather than magical!)
Source - Quest: The Perfect Stout

Spideroot
Description - A thorny root
Location - West of Halfhill, Valley of the Four Winds
Uses - The sour-tasting liquid within is used in the concoction of a local farmer's weed-killer; it nourishes plants while killing off weeds.
Source - Quest: Growing the Farm I: A Little Problem

Stoneblossom * * (?)
Description - An egglike, dried "fungal bloom"
Location - Grows in clusters in the Shrine of Goldrinn, Mount Hyjal
Uses -  It is combined with Bitterblossom and Darkflame Embers (a cool-to-the-touch stone even when still burning, found in Twilight braziers) to create a draught which, when drunk, snaps Old-God-brainwashed people of various races from their state. It is unknown whether it can cure advanced madness, or merely wipes away brainwashing.  The "cleansing draught" must be boiled, and is chunky and reeks of rotted cabbage.
Source - Quests: From the Mouth of Madness/Free Your Mind, the Rest Follows

Tarblossom
Description - A beautiful green plant with reddish-tinted leaftips and red-and-violet flowers.
Location - Within the Lakkari Tar Pits of northern Un'goro Crater
Uses - This highly-valued and rare flower is prized for both beauty and durability, with its petals being tougher than leather.
Source - Quest: Hard to Harvest

Tear of Tilloa *
Description - A tiny white-blue flower
Location - Manor Mistmantle, Duskwood
Uses - When mixed with Musquash Root, it can be brewed into a poisonous drink. The creator calls it Blackclaw Stout, though this may not be well-known outside of underground warlock circles. The drink tastes simply like a stout that packs quite a punch. The imbiber then falls dizzy, feels hot, and then dies.
Source - Quest: A Noble Brew

Terokkar Chokeberry *
Description - Red berries plucked from green bushes
Location - Terokkar Forest
Uses - One of many reagents used to neutralize dark Arakkoa wards, by combining said reagents into a charm.
Source - Quest: The Final Reagents

Thornwood Trees
Description - Thick, dark-barked trees with curling roots, red-pink leaves and massive spikes (man-sized or larger) that act as thorns
Location - Drak'Agal, the waterlogged area near the Argent Stand in Zul'Drak
Uses - The dead roots of these trees resist moisture and can be burned as firewood even when taken directly from the water.
Source - Quest: Creature Comforts

Thorny Stankroot *
Description - Hideously smelly, very thorny large and pale silver-green root, with green foliage
Location - The Twilight Highlands
Uses - When steeped in water it boils into a powerful cure-all for gryphons and possibly birds, though it gives humanoids terrible cramps.
Source - Quest: Roots'll Do 'Er

Violet Citron *
Description - Clusters of dark blue flowers
Location - Dampsoil Burrow, Townlong Steppes
Uses - The pollen has a strangely acidic, citrusy smell and is a component used to counteract mantid poison, particularly potent in young swarming mantid. The venom will chew through skin, infect blood and make for a slow and excruciating death if not treated. Violet Citron must be "mixed properly" (how is not specified) and will then eat away at the poison without doing any "lasting" damage to the body. It is applied infused in bandages.
Source - Quest: Treatment for the Troops

Violet Lichen *
Description - Thorny purple moss
Location - High altitudes in the Valley of the Four Winds
Uses - Mixed with Bloodbloom, Cavy Lily and Ghostcap to create a "wounding poison" used on Virmen.
Source - Quest: Haohan's Vote III: Pure Poison

Volatile Blooms
Description - Spiky red-orange shrubs
Location - Low-altitude green regions of northeastern Kun-Lai Summit
Uses - Even the smell of the red-hued blooms burns the nose. The plant has an affinity with fire, whether due to oil within the leaves, magic, or something else is unstated. It is easily flammable, to be kept away from open flames; hands are to be washed after handling.  Many can be gathered and brewed in an unspecified mixture to create a rather effective explosive liquid.
Source - Quest: Handle With Care

Water Poppy *
Description - A silvery-green, bushy herb with a flowery base and a larger violet flower on top
Location - The water at the Drak'sotra Fields of Zul'Drak
Uses - Used in a salve that binds to bandages, which are then used to greatly reduce pain.
Source - Quest: Something for the Pain

Waterweed *
Description - Bushy green underwater plants
Location - Northwestern Grizzly Hills
Uses - Mixed with Haze Leaf to create a vial of visions, then mixed with troll mojo to communicate at a distance with a particular troll. It is unknown how the elixir is attuned, nor how it can be adapted to others.
Source - Quest: Vial of Visions

Wiggleweed *
Description - Strangely-glowing seaweed with a tantalizing pattern growing across the stem
Location - Grown around the Vashj'ir stronghold near Deepmist Grotto
Uses - Fed to prisoners; extremely addictive, causing severe bowel pain due to withdrawal illness. It may be used simply to keep prisoners from fleeing.  One may be able to slowly lower dosage of the sprouts they eat until the addiction is gone.
Source - Quest: What? What? In My Gut?

Winter Hyacinth
Description - Colorful, somewhat spiky purple and blue flower
Location - Grows only on the ice flowing from the Ironwall Dam of Icecrown into Crystalsong Forest
Uses - Rare and seemingly only decorative.
Source - Quest: A Worthy Weapon

Witch's Bane *
Description - A large, fern-like green bush with layered, violet-red flowering stalks
Location - Grows all over the northern peninsula of Dustwallow Marsh
Uses - When burned, for example as a torch, the smoke will draw out "evil," exposing it from where it hides.
Source - Quest: The Witch's Bane

Wolfsbane
Description - A small, thorned and coiled green-brown root
Location - Northern Grizzly Hills, around Silverbrook
Uses - Repels worgen, though efficiency, range and effects are unstated.
Source - Quest: Wolfsbane Root

Wyrmtail *
Description - A plant of green, coiled stalks that seem to pulsate
Location - The Dragonmurk and Wyrmbog of Dustwallow Marsh
Uses - Wyrmtail can be used to help heal wounds and to dull pain.
Source - Quest: To Catch a Dragon by the Tail

Xavren's Thorn *
Description - Golden-orange plants with paper-thin, razor-edged leaves
Location - Rocky cliffs northwest of Brill, Tirisfal Glades
Uses - Combined with Marropetal and briny sea cucumber, and possibly other ingredients, to create a particularly painful and virulent plague.  When consumed, the concoction turns the imbiber into a ghoul; they die shortly thereafter.
Source - Quest: Variety is the Spice of Death[/b]

Herbs by Location

Eastern Kingdoms

Alterac Mountains - Flushbloom
Duskwood - Rot Blossom, Tear of Tilloa
Eastern Plaguelands - Rotberries
Eversong Woods - Bloodthistle
Gilneas - Moonleaf
Isle of Quel'Danas - Bloodberries
Stormwind City - Blood Nettle
Stranglethorn Vale - Limes
Swamp of Sorrows - Prayerblossom
Tirisfal Glades - Doom Weed, Marrowpetal, Xavren's Thorn
Twilight Highlands - Thorny Stankroot
Vashj'ir - Scalding Shroom, Wiggleweed
Western Plaguelands - Plague Tangle
Wetlands - Fenberries

Kalimdor

Azshara - Briaroot
Azuremyst Isle - Azure Snapdragon
Darkshore - Death Cap, Fuming Toadstool, Lunar Fungal Bloom, Scaber Stalk
Desolace - Aloe Thistle
Durotar - Cactus Apple
Dustwallow Marsh - Bloodkelp, Witch's Bane, Wyrmtail
Felwood - Crying Violet, Emerald Shimmercap
Mount Hyjal - Bileberries, Stonebloom & Bitterblossom
Mulgore - Pine Nuts
Teldrassil - Moonpetal Lilies, Fel Cone
Orgrimmar - Blood Nettle
Un'goro Crater - Coconut Milk, Tarblossom
Wailing Caverns - Serpentbloom

Northrend

Crystalsong Forest - Winter Hyacinth
Dragonblight - Dahlia's Tears, Murkweed, Ruby Lilac
Grizzly Hills - Blackroot, Haze Leaf, Waterweed, Wolfsbane
Storm Peaks - Cave Mushroom
Zul'Drak - Muddlecap Fungus, Water Poppy

Outland

Hellfire Peninsula - Drycap Mushroom, Hellfire Spineleaf, Razorthorn Root
Shadowmoon Valley - Netherdust Bush
Terokkar Forest - Olemba Seed, Terokkar Chokeberry
Underbog - Sanguine Hibiscus
Zangarmarsh - Bogblossom, Burstcap Mushroom, Fulgor Mushroom

Pandaria

Krasarang Wilds - Imperial Lotus
Kun-Lai Summit - Fire Lotus, Kafa'kota Berry, Volatile Blooms
The Dread Wastes - Dreadshade
The Jade Forest - Serpent's Scale
Townlong Steppes - Mao-Willow, Mushan Urine, Violet Citron
Valley of the Four Winds - Bloodbloom, Cave Lily, Ghostcap, Violet Lichen, Dreamleaf, Meadow Marigold, Shadelight Truffle, Spideroot

Other

Firelands - Burning Seed
Darkmoon Island - Darkblossom
The Emerald Dream - Emerald Acorns
The Molten Front - Magmolia


Herbs by Property


Dark Magic/Plague

Bileberries, Doom Weed, Fel Cone, Marrowpetal, Xavren's Thorn, Plague Tangle, Rotberries, Rot Blossom

Healing/Painkilling/Cures

Aloe Thistle, Azure Snapdragon, Blackroot, Cave Mushroom, Dahlia's Tears, Fenberries, Fuming Toadstool, Hellfire Spineleaf, Imperial Lotus, Lunar Fungal Bloom, Mao-Willow, Moonpetal Lilies, Mushan Urine, Prayerblossom, Ruby Lilac, Thorny Stankroot, Violet Citron, Water Poppy, Wyrmtail

Magical

Bloodberries, Bloodkelp, Blood Nettle, Bloodthistle, Bogblossom, Briaroot, Burning Seed, Burstcap Mushroom, Crying Violet, Dahlia's Tears, Dreamleaf, Emerald Acorns, Emerald Shimmercap, Hazeleaf, Waterweed, Moonleaf, Netherdust Bush, Olemba Seed, Razorthorn Root, Serpentbloom, Stonebloom & Bitterblossom, Terokkar Chokeberry, Witch's Bane

Poison

Bloodbloom, Cave Lily, Dreadshade, Ghostcap, Muddlecap Fungus, Murkweed, Tear of Tilloa, Violet Lichen, Wiggleweed

Other/Unknown (includes herbs whose exact method of operation is undefined):

Cactus Apple, Coconut Milk, Darkblossom, Death Cap, Fire Lotus, Flushbloom, Fulgor Mushroom, Kafa'kota Berry, Limes, Magmolia, Meadow Marigold, Pine Nuts, Sanguine Hibiscus, Scaber Stalk, Scalding Shroom, Serpent's Scale, Shadelight Truffle, Spideroot, Tarblossom, Volatile Blooms, Winter Hyacinth, Wolfsbane

Holy mother of gathering. Incredible!

Awesome!

And all of these have in game sources/applications in their quests <3

Ha Hope you guys find good uses for it!

Mind you this is far from complete, so any examples you might find that AREN'T here, paste and I'll add 'em!

Nice one Feral! I'm aware that there is a guide for every other herb online, but they don't at all divulge on quest herbs and what they do! thanks

Fel Cone
As seen in [You must be registered and logged in to see this link.], can be found underneath the tallest branches of Teldrassil. Upon digesting, it seems, these will transform you into a frog with limited ability of regular speech. At least if you're a satyr.

Thanks! Updated

Not so much from quests... But something i noticed from the novel Warcrimes least.

Blood elf smoking a hookah of black lotus and dreaming glory. Suposedly a relaxing combination and it dulls senses.

Know there is mention of some other herbs somewhere but can't be bothered to look for it.

siegmund wrote:Not so much from quests... But something i noticed from the novel Warcrimes least.

Blood elf smoking a hookah of black lotus and dreaming glory. Suposedly a relaxing combination and it dulls senses.

Know there is mention of some other herbs somewhere but can't be bothered to look for it.

Awesome. I may put in an added section for 'real' herbs, then, not sure yet!

Also, updated the Crying Violet's info with more potential uses.

Not sure if you still update this, Feral, but I think you haven't gotten this on your list; [You must be registered and logged in to see this link.] aswell as this [You must be registered and logged in to see this link.]