Portable Swamp

The portable swamp was first seen when Fred and George Weasley planted it on the way to Professor Umbridge's Office. Professor Flitwick later removed it when she was sacked as Headmistress at Hogwarts, leaving only a small patch. Although Flitwick claimed to have left it as it was "a good bit of magic", Ron Weasley believed it was actually left as a tribute to the twins. It is also used in the Harry Potter and the Order of the Phoenix video game when you swamp Hogwarts' courtyards with it to force Umbridge to leave Hogwarts.

Appearances

 * Harry Potter and the Order of the Phoenix
 * Harry Potter and the Order of the Phoenix (video game)