This chapter discusses the growing popularity of biodynamics in the Swiss vineyards. This esoterically driven approach to agroecology has been inspired by Rudolf Steiner’s teachings and is currently purported by the anthroposophical movement. The author argues that the current popularity of biodynamics relies on several demarcation lines that are used by wine-crafters to negotiate their self-identity: on the one hand, wine-crafters claim that biodynamic guidelines are more “sustainable” and suitable for wine-crafting’s quality over quantity production. They thus tend to present their agronomy as featuring do-it-yourself, low-tech, sentient, and practitioner-based distinctive dimensions. On the other hand, biodynamic wine-crafters negotiate their identity as apart Anthroposophy by claiming autonomy over biodynamic guidelines in regard to more “orthodox” interpretations of Rudolf Steiner’s legacy. Overall, the chapter argues how crossed concerns over sustainability and spirituality are at stake in the wine-crafting professions, thus moving the conventional boundaries between the religious and the secular. The chapter also presents how in contexts of ecological struggle, new sociocultural forms are in part inspired by Rudolf Steiner’s cosmology to apprehend new ecosystemic complexities.