Which is where the dirty dozen and the clean 15 come into play. The list is a resource to help you make the best choices for your health and for the earth, whatever your current budget or state of greenness.

The Dirty Dozen (in order of contamination)
 Apples
 Celery
 Sweet bell peppers
 Peaches
 Strawberries
 Nectarines
 Grapes
 Spinach
 Lettuce
 Cucumbers
 Blueberries
 Potatoes

The Clean 15 (in order of least contamination)
 Onions
 Sweet Corn
 Pineapples
 Avocado
 Cabbage
 Sweet peas
 Asparagus
 Mangoes
 Eggplant
 Kiwi
 Cantaloupe
 Sweet potatoes
 Grapefruit
 Watermelon
 Mushrooms