We all want to provide the best, safest, and most nutritious foods for our family, and organic is a great option to help eliminate pesticides and other chemicals and hormones that are added to our food. However, there are certain foods that are not necessary to buy organic, like bananas, onions, avocados, pineapples, mangos, sweet peas, grapefruit, asparagus, and kiwi. All these fruits and veggies are either protected by a thick skin you don't eat, or do not have much exposure to pesticide residue given how they're grown. So, save some money on these and just give them a good wash. For other foods like any dairy products, meats, berries, or produce with skins that you ingest, it's wise to buy organic. This is the best rule of thumb to invest where it's necessary and save when you can.