|Release date||7 January 2016 (Update)|
|High Alch||28 coins|
|Low Alch||19 coins|
|Store price||Not sold|
|Used in the farming industry of Kourend.|
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.
From 5% favour, it takes 800 buckets of sulphurous fertilisers to reach 45%, 1,400 to reach 75%, or 1,900 to reach 100%. Players who have completed the Client of Kourend quest will only need half of these.
Before an update on the 8th of January the favour was earned by donating Clerk 6 buckets of Sulphurous fertiliser per 0.1 favour earned.