Buy these organic! Peaches, appples, bell peppers, celery,nectarines,strawberries, cherries, pears, grapes(imported), spinach, lettuce and potatoes. Kale too from the other list. See the articles below.
Also sometimes the stores "play games" with produce. Here is a trick that I learned that makes sure the produce is organic. I have seen the stores put the conventionally grown produce in the organic spot and hope no one notices....
Organic produce has a sticker that has a 5 digit produce code starting with a number 9 as in 94023
Produce that is conventially grown with synthetic pesticides, etc. is a 4 digit number starting with a 4 as in 4265.