astrojetta, this will interest you. My friend Maggie, who is a whiz when it comes to natural foods and products, just informed me that those little stickers on fruit and vegetables tell you how it was grown.
She said when the serial number begins with a 4, the produce was conventionally grown (i.e., with pesticides and such). An 8 means it is scary-ass GMOs and a 9 means it is organic.
I didn't know this.
Good to know!