MUSTS: Apples,cherries, grapes (especially if they're imported), nectarines, peaches,pears, raspberries, strawberries, bell peppers, celery, potatoes, and spinach. WHY? Because these fruits and veggies have been found to contain the most pesticide residue, even after being washed.
You don't need to worry about buying these organic: bananas, kiwi, mangoes, papaya,pineapple, asparagus, avocado, broccoli, cauliflower, corn, onion,sweet peas because pesticide unlikely applied.