The name Petunia is a girl's name of English origin meaning "trumpet-shaped flower". Petunia and is often added to lists like Flower Names for Girls and discussed in our forums with posts like "If I had 8 daughters whose names started with...".
From the experts:
Literary heritage: the "Loony Tunes" girlfriend of Porky Pig. But with the increasing popularity of all kinds of unusual botanical names, Petunia may be a name we start to hear more of. Perhaps-more-pleasing Petunia alternatives: Petal, Posy, Poppy.