The Fertilizer is a consumable item which immediately grows trees when used on a sapling.
Each use causes the player character to throw out Fertilizer in a small area in front of them. If a sapling meeting the required growing conditions is present in the area of effect, it will immediately sprout into a tree of the corresponding biome.
Saplings that fail to fulfill the growing requirements will not sprout into trees even if the Fertilizer is used on them, essentially wasting the item.
- Using Fertilizer in conjunction with the Axe of Regrowth, with its ability to replant trees as saplings upon cutting them down, allows the player to gather wood quickly and effectively.
- Keep in mind, however, that Fertilizer can be fairly expensive to mass-produce, due to the tedium of producing Poo and the non-renewability of Ash Blocks.