The Dirty Dozen Fruits and vegetables are the ones that have the highest pesticide residue, based on data compiled by the United State Department of Agriculture.
This is why you are better off buying certified organic or growing your own pesticide free fruits and vegetables. Do a little research and find out how pesticides could affect our health.

Apples
Celery
Strawberries
Nectarines (imported)
Spinach
Peaches
Sweet bell peppers
Potatoes
Blueberries (domestic)
Lettuce
Kale/collard greens

Check out the Tower Garden as an alternative on this website.