Farming

Fertilizer

Updated 3/8/2026

Fertilizer

version 0.2.3456

Description

Fertilizer makes plants grow faster and produce more. It can be made in the Portable Composter or Advanced Composter.

Performance

Each fertilizer is made from 3 ingredients, which can be any combination of biomass, decayed food or food (raw or cooked). When more than 3 ingredients have been added to a composter, the fertilizer will be based on the average of those values. Each type of ingredient have their own effect on the end result.

The following data was collected on tomatoes only:

FertilizerNumber of usesTomato growth speed, planting to matureTomato yield (seeds and produce)
nonen/a616 seconds¹2
3 biomass7416 seconds¹4
3 raw food3314 seconds¹5
3 decayed food3279 seconds¹4
1 biomass + 1 raw food + 1 decayed3314 seconds¹4
2 biomass + 1 raw food4349 seconds¹4
2 biomass + 1 decayed4336 seconds¹4
2 decayed + 1 biomass3311 seconds¹4
2 raw food + 1 biomass3327 seconds¹5
1.5 raw food + 1.5 biomass4330 seconds¹5
  • 1: The recorded times varies with a few seconds for unknown reasons. However, two plants of the same type that was planted exactly at the same time will always mature at exactly the same time, as long as their access to light is equal. The grow times were measured using grow lights only (no sunlight). The growth times were recorded by using a Stop Watch (from Kit(Music)) and an Integrated Circuit (IC10), starting at Hydroponics Device Slot 0 "Occupied" = 1 and stopping at Hydroponics Device Slot 0 "Mature" = 1.

Producing decayed food

The following conditions gave the shortest decay times.

  • Gas: X
  • Pressure: <0.2 kPa
  • Temperature: >200 °C
  • Cooked food decays slightly faster than raw A Fridge Small can be used instead of building a room with this type of atmosphere. Gas at very low pressures can't be heated by a Pipe Heater, the gas should be heated before reducing its pressure.

Base growth times for a selection of plants

The recorded growth time is not exact, it varies with a few seconds during each measurement for unknown reasons.

PlantGrowth time
Fern616 seconds
Darga fern925 seconds
Rice340 seconds
Tomato617 seconds
Potato618 seconds
Soybean620 seconds
Wheat620 seconds
Corn766 seconds
Pumpkin849 seconds