Ginseng

Ginseng is a spell reagent. It is also used as an ingredient in Cooking and Alchemy.

Source
Ginseng can be harvested in the wild, purchased for US$4 from alchemy and herbalist vendors or obtained as a drop from mobs.

Vendors

 * Valus
 * Eldeir Village
 * Pyros Landing
 * Oasis
 * Black Forest Outpost
 * Belhaven

Spells
Ginseng is a reagent for the following spells:
 * Heal
 * Cure
 * Teleport
 * Greater Heal
 * Ward:Evil

Alchemy
Ginseng is an ingredient for the following potions:
 * Lesser Heal Potion
 * Heal Potion
 * Greater Heal Potion
 * Cure Potion