I quit growing petunias years ago. They are annuals which only last one season here. In our area they are plagued by a little green worm that makes a mess of them by halfway through the season.
Then for some odd reason I picked up a few little pots of these white Supertunias and put them in the ground in the Moonlight garden. They have lasted an entire year with no signs of any pest damage. They are very bright and cheery. I'm sold on them and even bought some more to add to another bed. I must say I never thought it would happen!