Bio-dynamics is a philosophy and method of agriculture developed by Rudolph Steiner in the 1920s. Its focus is to help people work with nature to grow healthy food. In many ways, it is similar to organic gardening. Both methods avoid chemical inputs and rely on composting, crop rotation, and other techniques. What makes bio-dynamics different is that its holistic influences. A bio-dynamic farm would strive to be a self-supporting system that mimics an ecosystem. Gardeners that follow this method of agriculture also believe that cosmic rhythms influence plant growth.