Recently I was flipping through a magazine at my kids' dentist office and saw a small article about the little stickers on our grocery store fruit, and how the numbers on the stickers had meaning. Who knew? I certainly didn't! I thought they were just there for pricing purposes.
If there are FOUR digits: It's conventionally grown.
If it starts with a NINE, it's organic.
If it starts with an EIGHT, it's genetically modified (i.e. yuck)
Pretty interesting stuff, no?