Here is an interesting article that highlights the differences. Here is an excerpt:
Are natural and organic foods the same?
No, although organic foods are natural by definition, The term. “natural”
U applies broadly to foods that are mininaa11y processed and free of synthetic
preservatives ; artificial sweeteners, colors, flavors and other artificial additives ; grow hormones; antibiotics ; -hydrogenated oils; stabilizers ; and emulsifiers. Most foods labeled natural are not subject to government controls beyond the regulations and heath codes that apply to all foods. Exceptions include meat arid poultry. The Food Safety and Inspection Service (FSTS) of the U.S. Department of Agriculture (USDA) requires these to be free of artificial colors, flavors, sweeteners, preservatives and ingredients that do not occur naturally in the food. Natural meat and poultry must be minimally processed in a method that does not funciarientally alter the raw product . In addition, the label should explain the use of the term natural, e.g., no artificial ingredients.
“0rganic’ refers not only to the food itself. but also to how it was produced. Foods labeled organic must be certified under die National Organic Program (NOP), which took effect October 21, 2002. They must be grown and processed using organic farming methods that recycle resources and promote biodiversity — two key elements of environmentally sustainable agriculture. Crops must be grown without using synthetic pesticides, bioengineered genes, petroleum-based fertilizers and sewage sludge-based fertilizers . Organic livestock must have access to the outdoors and be given no antibiotics or growth hormaries. Organic foods may not be irradiated.
To read the entire article, follow this link http://www.fda.gov/ohrms/dockets/dockets/06p0094/06p-0094-cp00001-05-Tab…