The Harry Potter Compendium
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Fertiliser is a potion that, when poured on soil, causes plants to grow faster. Phials of it are sometimes found hidden in the Forbidden Forest, one of which had a path leading to it marked with a particular type of red mushroom. Brewing it requires dragon dung, bones, plimpy eyes, and dried kelp.

Instructions[]

  1. Crush dragon dung in pestle, add to cauldron and stir clockwise until potion turns blue.
  2. Crush bones with hammer, add to cauldron and stir anti-clockwise until potion turns yellow.
  3. Crush plimpy eyes in pestle, add to cauldron and stir clockwise until potion turns red.
  4. Slice kelp with knife, add to cauldron and stir anti-clockwise until potion turns green.

Appearances[]

See also[]

  • Dragon dung fertiliser
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