― The dirty dozen are the 12 produce that you should ALWAYS buy organic. These 12 items are HIGHLY saturated with pesticides that basic washing could never remove. ∙ PHOTO SOURCE ∙ You consuming any of the dirty dozen means you are consuming an average of 14 different pesticides a day! ∙ BUY THESE ONLY IF THEY ARE ORGANIC: ∙ 1. Apples2. Celery 3. Sweet bell peppers 4. Peaches5. Strawberries 6. Nectarines (imported) 7. Grapes8. Spinach9. Lettuce10. Cucumbers11. [...].