Handy trick I just learned from America's Test Kitchen : To find out how fresh produce was grown look at the sticker. The one that has little numbers on it (Penguin likes to decorate her lunchbox with them) It also happens to have a secret code.
In brief: 4 digits indicate conventional produce and usually start with a 3 or a 4. 5 letter digits beginning with a 9 are the sought after "organically grown" fruits and veggies. And 5 letter digits beginning with the number 8 should be avoided at all costs, since they stand for genetically modified organisms.
I suppose you can purchase number 8 if you like...but personally I find the concept of designer DNA disturbing. I'll stick to organics, thank you. Or conventional. Even if there is the very real potential of "drift" from GMO fields. I want my money to say NO to GMO. And support the farmers who are struggling to agree.