I came across this list on Sparkpeople.com that is a guide to what you should and don’t necessarily need to buy organically. We first switched our kids to organic dairy, then farm raised meat. We eliminated nitrates in hot dogs and bacon. We also buy organic, local produce whenever possible.

Here is the list:

The Dirty Dozen: Top 12 Foods to Buy Organic
If you have budget constraints, your money is doing more for your health when you put it towards organic varieties of the following fruits and vegetables (listed in descending order, starting with greatest levels pesticide contamination):

1. Peaches
2. Apples
3. Bell peppers
4. Celery
5. Nectarines
6. Strawberries
7. Cherries
8. Kale
9. Lettuce
10. Imported grapes
11. Carrots
12. Pears

The Clean 15: Save Your Money & Buy Conventional
If going totally organic is too difficult or pricey, play it safe and eat the following conventional produce items to minimize your exposure. These are known to have the least amount of pesticide residue (listed in ascending order, starting with of lowest levels of pesticide contamination):

1. Onions
2. Avocados
3. Sweet corn
4. Pineapple
5. Mangoes
6. Asparagus
7. Sweet peas
8. Kiwis
9. Cabbage
10. Eggplant
11. Papaya
12. Watermelon
13. Broccoli
14. Tomatoes
15. Sweet potatoes