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Bone Mill

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This page or section contains unmarked spoilers from update 1.5 of Stardew Valley. Mobile players may want to avoid or be cautious toward reading this article.

Bone Mill
Bone Mill.png
Turns bone items into fertilizers.
Source: Crafting
Sell Price: Cannot be sold
Recipe Source:

Gunther Icon.png Gunther (Mail)

Ingredients: Bone Fragment.png Bone Fragment (10)Clay.png Clay (3)Stone.png Stone (20)

The Bone Mill is a piece of Refining Equipment that produces fertilizers from Bone Fragments or any bone item (see below). It takes 240 in-game minutes (4 hours) to process.

A Bone Mill may be crafted after getting the recipe by mail from Gunther after completing his special orders quest "Fragments of the past".

Input Items

Output Items

Any of the following items may be output randomly. There is a 0.001 chance that the number of items will be doubled.[1]


  1. See StardewValley.Object::performObjectDropInAction in the game code.


  • 1.5: Introduced.