answer:Here’s the Dirty Dozen for 2012 that @flo is talking about. Dirtiest foods (Foods best purchased as organic): Celery Sweet bell peppers Peaches Strawberries Nectarines (imported) Grapes Spinach Lettuce Cucumbers Blueberries (domestic) Potatoes PLUS: Green beans & Kale (due to insecticide usage) BTW: Cilantro usally comes in right after these^^^ as 13th. Clean 15 (those you don’t need to buy organic if you can’t afford to): Onions Sweet corn Pineapples Avocado Cabbage Sweet peas Asparagus Mangoes Eggplant Kiwi Cantaloupe (domestic) Sweet potatoes Grapefruit Watermelon Mushrooms @flo I don’t know of a longer list than the dirty/clean yearly lists. However, from the books I’ve read, my recommendation is to buy as many of the greens you eat in the organic section, or to grow them yourself. Citrus & melons we buy conventional.