Dirtiest Fruits / Vegetables
Apples
Celery
Cherry tomatoes
Cucumbers
Grapes
Hot peppers
Nectarines
Peaches
Potatoes
Spinach
Strawberries
Sweet bell peppers
Kale / collard greens
Summer squash
Cleanest Fruits / Vegetables
Asparagus
Avocados
Cabbage
Cantaloupe
Sweet Corn
Eggplant
Grapefruit
Kiwi
Mangos
Mushrooms
Onions
Papayas
Pineapples
Sweet peas – frozen
Sweet potatoes
What you should do
You should wash all fruits and vegetables before eating them, but be especially sure to clean the ones on the dirtiest list.
Source
http://www.ewg.org/foodnews/summary.php
