Certain fruits and veggies (aptly called the dirty dozen) have been identified as the ones most likely to contain pesticides if they’re conventionally grown—so whenever possible, opt for organic on these (whether fresh, frozen, or in ready-to-serve baby food): apples, celery, cherries, grapes, nectarines, peaches, pears, strawberries, potatoes, tomatoes, spinach, and kale.

