Cactus

Cactus is a plant that can be harvested and use as an Alchemy ingredient.

Source
Cactus can be found at select locations in the Barren Lands, such as the area surrounding the Oasis Mage tower or at the southern Giant Beetle spawn location. Sometimes while harvesting, a Sacred Cactus will be harvested instead.

Use
Cactus is used in Alchemy to create:
 * Mending Potion