Fanged Geranium

A Fanged Geranium is a magical flower with sharp teeth. Harry Potter received a minor bite from one during his O.W.L. exam for Herbology.

There is widespread historical speculation that the Muggle War of the Roses actually started with wizarding neighbours arguing over a Fanged Geranium.

Fanged Geraniums were mentioned in an advertisement for the Toots, Shoots 'n' Roots that was printed in Rumours!. The ad copy asked, "Fanged Geranium nothing but gums?"