Old School RuneScape (OSRS) – How to Make Supercompost

How to Make Supercompost in Old School RuneScape

When training their Farming level in Old School RuneScape, players are always looking for ways to ensure a successful harvest. One popular method is to use compost or its upgraded version, Supercompost, on their allotments. But what exactly is Supercompost and how can players make it themselves? In this guide, we will walk through the step-by-step process of making Supercompost, as well as provide additional information about compost that will benefit your farming in Old School RuneScape!

Making Supercompost at a Farming Patch

At any farming patch in the game, you will find a compost bin that can be used by anyone. To start the process, simply add 15 pieces of produce to the bin and close it. Over the course of approximately 90 minutes, the Supercompost will gradually be made. Once it is complete, you can collect it using 15 empty buckets and store them at the nearby Tool Leprechaun.

Here are some of the most common types of produce that can be used in a compost bin:

  • Watermelon
  • Pineapple
  • Snape Grass
  • Mushroom
  • Poison Ivy Berries
  • Calquat Fruit

Watermelon is the recommended choice for making Supercompost, as it can be grown at every farming patch, saving inventory space, and is relatively inexpensive compared to other options. While there are various herbs and tree roots that can also be used, they are not cost-effective.

Making Supercompost Using Potions

If you are looking for a faster alternative, you can purchase regular compost and a Compost potion, then combine them to make Supercompost. This method is quick and cost-effective, with a bucket of Supercompost costing around 100gp.

Supercompost Alternatives

In addition to Supercompost, there are other alternatives available to assist players on their farming journey in Old School RuneScape.


Ultracompost is an upgraded version of Supercompost. It can be made by using two Volcanic Ashes on a bucket of Supercompost. Ultracompost offers increased harvest rates on allotments and reduces the chance of patches becoming diseased. Volcanic Ash can be obtained from various rocks or as a drop from monsters on Fossil Island.

“Fertile Soil” Spell from Lunar Spellbook

Players who have completed the “Lunar Diplomacy” quest and have 83 Magic can access the Fertile Soil spell. This spell can be cast on any farming allotment to fertilize the soil, providing the same benefits as Supercompost. To cast the spell, you will need 15 Earth, 3 Astral, and 2 Nature runes. If you have the “Ash Covered Tome” from the Volcanic Mine minigame, you can also use two volcanic ashes with the spell to achieve the same effects as Ultracompost.

These alternatives can enhance your farming experience and yield better results in Old School RuneScape!

That is how you make Supercompost in Old School RuneScape! If you have any questions or suggestions, feel free to leave them in the comments section below.