Pesticides are used on all crops, but they have more of an effect on some. Here’s a list of foods that you should buy organic, because even after vigorous washing, traces of harmful pesticides can still be found on them:
Celery
Peaches
Strawberries
Apples
Domestic blueberries
Nectarines
Sweet bell peppers
Spinach, kale and collard greens
Cherries
Potatoes
Imported grapes
Lettuce