According to our good friends at the Environmental Working Group, the foods that usually contain the most pesticides, and therefore you’d most want to buy/eat organic, are (in order of worst to least worst but still bad… the so called “dirty dozen”):
Apples
Celery
Strawberries
Peaches
Spinach
Nectarines ( imported)
Grapes (imported)
Sweet bell peppers
Potatoes
Blueberries (domestic)
Lettuce
Kale/collard greens