Dragon dung fertiliser was a solution used to help Venomous Tentaculas and (presumably) other plants grow. Its main ingredient is Dragon dung, the potion's namesake.

In 1997, Horace Slughorn asked Harry Potter to brew some in order to collect the otherwise unvaluable leaves of a Venomous Tentacula. The fertiliser is also noted to be Professor Sprout's preferred type.

Mathilda Grimblehawk's partner used dragon-dung fertiliser to restore a sapling Wiggentree brought from the forest by Don Harrison.[1]

During the first Herbology class in the 1986–1987 school year, Professor Pomona Sprout revealed to Jacob's sibling that she had spent her summer conducting several experiments on the composition of dragon dung fertiliser.[2]


Notes and references

  1. Fantastic Beasts: Cases from the Wizarding World - Case 3: Out of the Woods
  2. Harry Potter: Hogwarts Mystery, Year 3, Chapter 1 (Year Three Begins)