Oxygen Not Included Wiki

Spaced Out Banner.png has fresh updates every other day!

Please excuse our tardiness while we try to keep the Wiki up to date!

If you want to help out, head on over to the Discord Logo.pngDiscord Server in the #wiki-collab channel to learn how.


Oxygen Not Included Wiki
This article has not been revised for the current version (U40-494396). It was last updated for LU-356355. It may contain inaccuracies.
This article has not been revised for the current version (U40-494396). It was last updated for LU-356355. It may contain inaccuracies.

Dirt is an important type of agricultural resource. It's especially important in the early game for the Research Station and initial food sources via Mush Bars and Mealwood. In the late game, it is necessary to grow domestic Sleet Wheat and to manufacture Fertilizer.



Dirt can be used to build Planter Boxes, Farm Tiles and Algae Terrariums.

Fertilizer Synthesizers can produce Fertilizer from Dirt. 39 g/s Polluted Water + 65 g/s Dirt + 26 g/s Phosphorite = 120 g/s Fertilizer + 10 g/s Natural Gas.


  • Hatches and Sage Hatches can eat Dirt and excrete Coal. When eating Dirt, it will increase the chance of laying Sage Hatch eggs. Sage Hatches convert 100% of consumed mass to Coal, making this a viable source of Power & Steel.
  • Shove Voles can eat Dirt and excrete Dirt tile with 50% mass. (Not recommended)



  • Dirt occurs naturally in the Temperate Biome and Forest Biome.
  • Compost converts Polluted Dirt (and other compostables) into Dirt at 100% efficiency (but generates a significant amount of waste heat). A steady source of Polluted Dirt is the Water Sieve.
  • Boiling Polluted Water into Steam will leave small amounts of Dirt behind (1% of mass). This is less efficient than Water Sieve, which retrieves 4% of water mass.
    • Note that when boiled in a high temperature environment, the generated dirt will quickly transform into sand, or even glass due to its low mass.
  • Some organic resources (Slime, Algae, Fertilizer) can be cooked into Dirt by heating them above 125°C.
  • Ethanol Distiller coverts 33.3% of the mass of the input Lumber to Polluted Dirt, which can be composted to Dirt. Each Arbor Tree, if domesticated, can produce up to 333.33 kg/cycle of Lumber. This can be used to produce up to 111.11 kg/cycle of Dirt per Arbor tree. However, note that each plant consumes 10 kg/cycle of Dirt, so the net is +101.11 kg/cycle (Polluted) Dirt. This requires 1.86 Compost heaps per domesticated Arbor Tree.
  • A Pip consumes 27 Kg of Lumber per cycle, excreting 20 kg of Dirt, converting 74% of the consumed Lumber into Dirt without the need for Composting.
    • A wild Arbor Tree can support up to 3 domesticated Pips, producing 60 Kg of Dirt per cycle without any input materials.
    • A domesticated Arbor Tree can support more than a full ranch of 8 Pips. This produces a net gain of 150 kg of Dirt per cycle with surplus lumber, for the cost of 70 kg of Polluted Water per cycle.
  • Spaced Out Logo.png It can be harvested on rocket missions to renewable Space POIs:
    • In Organic Mass Fields at a rate of 162 – 486 kg per cycle.

See also[]