Biome Stick

Biome Sticks are Items that can be used on the player's Private Island to change its biome. Changing the biome of the island can cause a variety of changes which are mostly minor (ex: foilage color), but can also cause more major changes, like weather or mob spawning. Using the biome stick, you can limit what mobs can spawn by changing the biome, although it cannot completely stop mob spawning. (Does not effect minion spawns such as your skeleton minion.)

You can reset your island biome to plains by talking to Jerry.

Uses
Biome sticks can be used in two ways:
 * Specific Area: This will convert a small area around where you use it to the new biome. Reload island (leave/come back) for the best effect. You can change the effect radius to between 1 and 5 (left click) or apply to biome to the targeted block (right-click).
 * Island: Talking to Jerry will let you change the biome for your entire Private Island. Note that you need to leave your private island to apply the biome.
 * Specific biome sticks such as a swamp or ice biome sticks do not exist.

List
All biome sticks change the color of foliage. No new biomes have been added. When the term (naturally spawn) is used, minion spawns are not included.