Fertile Soil is a Lunar spell that can treat any targeted farming patch with supercompost. Doing so will award you 87 Magic experience, plus 18 Farming experience.

Players can have the spell treat a patch with ultracompost instead by casting the spell while having two volcanic ash in their inventory, which it consumes. This requires the player to have read the ash covered tome, which is purchased from Petrified Pete's Ore Shop for 40,000 points.

The spell can work on a patch if it has something growing on it and wasn't treated before. If a patch has something that's finished growing, the spell will not work and yields the message Composting it isn't going to make it any bigger. The spell can be used on a patch at any growing stage, as well as before planting seeds, but it is recommended to use it right before/after you plant the seeds to save time and also to lower chances of disease, and raise chances of getting a better yield from the patch.

If the spell is used on a compost bin, a message will pop up that says No, that would be silly.

If used on anything other than a farming patch or compost bin, the player will say Um... I don't want to fertilize that!


Spell cost
15Earth rune.png2Nature rune.png3Astral rune.png971
Combo runes
2Nature rune.png3Astral rune.png15Dust rune.png971
2Nature rune.png3Astral rune.png15Mud rune.png4,556
2Nature rune.png3Astral rune.png15Lava rune.png971
2Nature rune.png3Astral rune.pngStaff of earth.png911
2Nature rune.png3Astral rune.pngDust battlestaff.png911
2Nature rune.png3Astral rune.pngMud battlestaff.png911
2Nature rune.png3Astral rune.pngLava battlestaff.png911

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