The essential guide to using biodynamics in your home garden by one of the world's masters. Biodynamic gardening is an organic system using particular preparations made from cow dung, silica crystals and various medicinal herbs. Preparations are sprinkled on the land to enhance microbial life in the soil. They are sprayed in a mist over the leaves of the plants to enhance photosynthesis and strengthen the plant or put into composts and liquid manures to assist the proper breakdown of the organic matter. Farmers and gardeners say that using the Biodynamic system of agriculture makes organic farming and gardening work