OSRS Ultracompost Guide

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Ultracompost Guide

OSRS Ultracompost: Obtaining, Ironman Uses, Requirements, and Importance

Ultracompost is a key resource in Old School RuneScape (OSRS) that offers significant benefits for players engaged in farming activities. Utilizing ultra-compost allows for increased crop yields, reduced disease rates, and faster plant growth. In this comprehensive guide, we will explore how to obtain ultracompost, its significance for Ironman players, the requirements for its production, and its importance in maximizing farming efficiency.

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To start

Obtaining Ultracompost:

To obtain ultracompost, players must first obtain regular compost. This can be done by using a compost bin or composting buckets filled with organic materials such as vegetables, fruits, and crushed bird nests. After the organic material is deposited into a composting bin, players need to wait for around one hour for it to transform into regular compost. Regular compost can then be further processed into ultracompost by using volcanic ash, which is obtained from the volcanic mine on Fossil Island.

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Ultra Composting for Ironman:

Ultracompost is particularly valuable for Ironman accounts as it eliminates the need for purchasing crops from other players or NPCs. By producing their own ultra-compost, Ironman players can ensure a steady supply and maximize their farming yields without relying on outside sources. Additionally, Ironman players can also use supercompost instead of ultra-compost, but the latter offers superior results.


Requirements for Ultracompost Production:

To produce ultracompost, several requirements need to be met:

a) The Fertile Soil spell requires the completion of the Lunar Diplomacy quest and at least level 83 Magic. The spell allows players to bless their crops with ultra-compost directly.

b) The bottom level of the volcanic mine on Fossil Island is accessible after completing the Bone Voyage quest. Players need a mining level of 50 and a light source to enter the mine.

c) The volcanic ash needed to convert regular compost into ultra-compost can be obtained by mining the volcanic vents within the mine. Each vent provides between 5-10 ash upon being mined.

crafted ultracompost

Importance of Ultracomposting

Ultracompost plays a pivotal role in optimizing farming efficiency and crop yield. Some of its key benefits include:

1. Increased yields: Using ultra-compost increases the likelihood of successful farming cycles, resulting in more abundant harvests. This is especially crucial for high-level crops like herbs, allotments, and fruit trees.

2. Reduced disease rates: Ultra-composted crops have a significantly lower chance of succumbing to diseases, meaning players spend less time and resources on disease management.

3. Faster plant growth: The nutrient-rich qualities of ultra-compost promote faster growth rates for crops, allowing players to harvest their crops earlier and complete multiple farming runs.

4. Profitability: With increased crop yields, players can sell surplus produce for profit or utilize them for other in-game activities such as cooking or Herblore.

herb with ultracompost


Obtaining ultra-compost is a crucial aspect of farming in OSRS. Its benefits in terms of increased crop yields, reduced disease rates, and faster plant growth make it an essential resource for both regular accounts and Ironman players. By meeting the requirements and producing their own ultra-compost, players can maximize farming efficiency and enhance their overall gameplay experience. So dive into the volcanic mine, gather volcanic ash, and start reaping the rewards of ultra-composted crops in Old School RuneScape. Good luck!