According to the National Sustainable Agriculture Information Service, treated lumber is not allowed under the Final Rule of the National Organic Program (NOP), the United States Department of Agriculture program that regulates organic gardening.
About this Author
In Jacksonville, Fla., Frank Whittemore is a content strategist with over a decade of experience as a hospital corpsman in the U.S. Navy and a licensed paramedic. He has over 15 years experience writing for several Fortune 500 companies. Whittemore writes on topics in medicine, nature, science, technology, the arts, cuisine, travel and sports.