Some conventionally grown produce is more likely to contain pesticides when it arrives in the store. Washing can get rid of surface residue, but the chemicals absorbed by the plant are there to stay. Buy locally grown when you can, and consider the following lists of most and least contaminated when deciding where to invest in organic.
12 Cleanest non-organic foods
- Corn (though most is genetically modified)
- Peas (sweet)
12 RISKIEST foods AKA "The Dirty Dozen"
- Bell Peppers
- Imported Grapes
- Strawberries & Raspberries
A more complete list can be found here.