Fertiliser

In lego harry potter years 1-4 there appears to be a fertiliser for magical plants.harry has to find it and brew it a couple times.the ingredients is dragon dung, a pile of bones,eyes of a pimply,and dried kelp.first you scrape the dragon dung and add it,then you stir the potion clockwise until it is blue.then you smash the bones and add them into the cauldron and stir clockwise until the potion is yellow.next you scrape the eyes of the pimply and add them into the potion,and stir clockwise til it is red.last you sclice the dried kelp and add it to the potion.stir till it is green.