Here is a Petunias In Shades of Pink

Flowers - Petunias, Stock Photo, Photos, Pictures, Photographs
Pink petunias; space for text.

I found 59 images for the term "Petunia" at Acclaim Images.com.
They offer a variety of royalty-free, high resolution formats to choose from, and you can even order prints and posters through them!

You might also try clicking on any of the terms below to see related images:
blossom,  blossoms,  hanging plants,  petunia,  flora,  flower,  beth conant,  floral,  petunias,  flowers,