Peppering
Rudolf Steiner’s radical pest management — burning insects to repel their kind
What It Is
Peppering (German: Pfeffern) is a biodynamic pest management technique described by Rudolf Steiner in his Agriculture Course of 1924. The practice involves collecting specimens of the pest species (insects, rodents, or weeds), burning them under specific astronomical conditions, grinding the ash to a fine powder, and diluting it in water to create a spray applied to the affected area.
The principle, according to Steiner, is that the burned remains of an organism carry a repellent force against living members of the same species. The ash is typically prepared during specific lunar or planetary alignments believed to correspond to the target organism.
How It Works in Practice
At Champagne Augustin, Marc Augustin captures dead insects of the pest species, passes them through purified water, and sprays the resulting solution on his vines. The preparation is made in small quantities and applied as a fine mist.
The practice requires intimate knowledge of the pest lifecycle, careful observation of vineyard conditions, and a willingness to engage with an approach that sits firmly outside conventional agronomy.
The Debate
Peppering is one of biodynamics’ most controversial practices. There is no peer-reviewed scientific evidence demonstrating efficacy through the proposed mechanism. Skeptics argue it is sympathetic magic dressed in agricultural language.
Practitioners counter that the proof is in the vineyard — that pest populations demonstrably decline after application, and that the absence of a mechanistic explanation does not constitute evidence of absence. Some researchers have suggested that the burned organic matter may contain volatile compounds that act as genuine repellents, though this has not been conclusively demonstrated.
Our Perspective
Whether or not peppering works through the mechanism Steiner described, it reflects something we consistently observe in biodynamic producers: an extraordinary attentiveness to the vineyard as a living system. The time spent preparing these solutions, observing pest behavior, and responding without reaching for a chemical spray produces a relationship with the land that is visible in the wines.
Further Reading
Steiner’s original 1924 Agriculture Course (Lecture 7) contains the foundational description. The Biodynamic Association publishes updated preparation guides.