Briarthorn

Briarthorn is a Herb that can be gathered by Herbalists. Requires 70 Herbalism to gather.

Source
Briarthorn can often be found at the base of trees in level 10-25 zones. Rarely, Swiftthistle can be harvested along with Briarthorn by picking Briarthorn nodes. It is also known to be dropping from various plant type monsters.

Alchemy

 * Lesser Healing Potion
 * Swiftness Potion
 * Elixir of Wisdom
 * Healing Potion
 * Strong Troll's Blood Elixir

Inscription

 * Dusky Pigment
 * Verdant Pigment

Lore
According to legend Briarthorn grows where Agamaggan's blood touched the soil of Azeroth after he fell in the War of the Ancients.