My husband and I just went over our October spending. Even eating organic foods, we spent $100 less than we spent in September when we were not eating organic. That said, we still spent quite a bit of money on food. Anyway, it made me ask the question, if I couldn't buy all organic food, which foods are the most necessary to buy organic? This is the list I came up with after reading different articles. Feel free to read them in their entirety on the links below. This list is from the stand point of contamination of the food from pesticides, not nutritional value. Here is the list of foods that have the highest levels of pesticide residue: celery, peaches, strawberries, apples, blueberries, nectarines, bell peppers, spinach, kale, cherries, potatoes, grapes, coffee, bananas, green beans, milk, rice and baby food. http://www.thedailygreen.com/healthy-eating/eat-safe/Dirty-Dozen-Foods; http://planetgreen.discovery.com/food-health/eat-organic-foods.html
Here is a list of the cleanest items to buy non organic (i.e., the least amount of pesticide residue): onion, avocado, sweet corn, pineapple, mango, asparagus, sweet peas, kiwi, cabbage, eggplant, papaya, watermelon, broccoli, tomato, and sweet potato.
This list includes corn which I will only buy organic because of the fact that so much corn is genetically modified (GMO).