The Ecological Farming Association
"a non-profit educational organization that promotes ecologically sound agriculture. Our special events bring people together from all over the world to share ideas and experiences in producing healthful food from a healthy earth. When you support the Eco-Farm Association, you are supporting a new vision for our food system where strengthening soils, protecting air and water quality, encouraging diverse ecosystems, and honoring rural life are all part of producing healthful food." HQ is near Monterey, CA.