Sulphurous fertiliser detail.png

Sulphurous fertiliser is made by combining saltpetre with regular compost, granting 2 Farming experience per bucket made. Making sulphurous fertiliser requires at least 5% favour with the Hosidius House.

It can be donated to the Clerk in Great Kourend's Hosidius House for favour. 0.1% favour is gained for every bucket donated.

From 5% favour, it takes 400 buckets of sulphurous fertilisers to reach 45%, 700 to reach 75%, or 950 to reach 100%.

Sulphurous fertiliser can't be withdrawn from the bank as a note.


  • Upon release, 0.1% favour was gained for every six buckets donated to the Hosidius House. This was changed to 0.1% for every two buckets donated in an update on 8 January 2016.
    • Upon completion of the quest Client of Kourend, this was reduced to 0.1% per bucket as part of the quest's reward of doubling favour gain among all Houses. However, after an update on 19 April 2018, this reward was given to all players by default as part of a balancing change for gaining favour.
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