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Gillyweed

Concept art of Harry Potter exhibiting the effects of Gillyweed

A nifty water plant that allows the person who eats it to breathe underwater


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It will make Harry Potter breathe underwater, sir!


Dobby

He was chewing the Gillyweed as hard and fast as he could; it felt unpleasantly slimy and rubbery, like octopus tentacles...


Extract

Harry Potter and the Goblet of Fire

By J.K. Rowling

Illustration of Harry swimming in the lake for the second task.

At the bottom of the Great Lake


An illustration of Harry with gills

Breathing underwater


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Mr Harry Potter used Gillyweed to great effect


Ludo Bagman
Harry in the lake with the Merpeople in the Second Task.

The Great Lake

By J.K. Rowling


Harry in the lake with the Merpeople in the Second Task.

Harry faces the underwater colony


Sprout holds a mandrake in her greenhouse.

The health hazards of Herbology


‘Harry Potter will do the task!’ squeaked the elf. ‘Dobby knew Harry had not found the right book, so Dobby did it for him!’


Extract

Harry Potter and the Goblet of Fire

By J.K. Rowling

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You saved my life with that Gillyweed, Dobby, you really did.


Harry Potter

Gillyweed fact file


Magical properties

Gives a human fish-like properties

Purpose

To help a wizard breathe underwater

Where it is likely to be found

Mediterranean Sea