Biodynamic agriculture is a method of agricultural production based on the theories of Rudolf Steiner, which relies on the understanding and respect of natural and planetary cycles. This method considers the farm as a living organism and uses plant-based preparations to support, regenerate, regulate, and amplify the main organic functions within nature itself. In this work, which will interest all those practicing biodynamics, Hugo Erbe, one of Steiner's most diligent disciples, presents the preparations he has developed over the years to energize his crops: antifreeze preparation, preparation for insufficient warmth, humus-forming preparation, flood defense preparation, etc.