Cactus

Cactus is both a Plant and an item that drops when that plant is harvested.

Cactus plant
The Cactus Plant can be found in the Desert biome on sand. It deals ten damage to the player when touched, but all enemies and NPCs are immune. Cactus Plants can be chopped down like trees, which drops the Cactus item. Mining the Sand blocks beneath a Cactus plant will quickly destroy the entire plant and yield all possible Cactus items.

Conditions
Cactus Plants will only grow under the following conditions:


 * 1) There needs to be at least a one thick layer of sand below it.
 * 2) The Cactus requires one space of open ground to either side. A raised tile will block growth, but a lower tile will not.
 * 3) The sand it grows on needs to be above the ground level.
 * 4) They only grow in the inner 3/4th of the map, e.g. not in zone where the Ocean biome can be generated.

Cactus item
Cactus is a crafting material obtained from chopping down Cactus Plants (described below), in the same manner as trees. It can also be harvested by removing a sand block below the base of the cactus.

After being harvested, it can not be placed by the player. Cactus is used to craft the Swiftness Potion and Thorns Potion.

History
Cactus Cactus Кактус