Ghost Mushroom

Ghost Mushroom is a Herb that can be gathered by Herbalists. It requires 245 in Herbalism to gather.

Source
As far as Azeroth goes, Ghost Mushrooms can be found only in The Hinterlands (in the cave beneath Skulk Rock, and in the cave near the altar in Jintha'Alor), Razorfen Downs, Maraudon and Dire Maul. They grow exclusively underground. Each node yields only one Ghost Mushroom with a relatively high respawn time compared to other herbs.

Nature elementals such as Irontree Stompers, Irontree Wanderers, Withered Protectors, and all the Warpwood mobs in Felwood will occasionally drop a Ghost Mushroom.

A player is able to purchase up to 4 Ghost Mushrooms (limited supply) when the Darkmoon Faire is open, for 15 silver each from Lhara.

Pickable Zones

 * The Hinterlands 61.0%
 * Maraudon 37.8%
 * Zangarmarsh 1.2%

Ghost Mushroom as an Ingredient
Ghost Mushroom is used in the following recipes: