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A practical introduction to biodynamics through compost, preparations, rotations, and whole-farm observation, with published field results for root growth and soil microbial biomass.

What is Biodynamics? - The Josephine Porter Institute

Biodynamics is a whole-farm approach to soil, plants, animals, and the work of the grower. It brings compost, crop rotations, biodynamic preparations, and careful observation together to cultivate living soil. Rudolf Steiner's agricultural tradition also invites attention to seasonal rhythms and the relationships within each farm.

Compost and organic matter are practical starting points. Growers can also explore methods such as the Johnson-Su bioreactor and biochar as soil-building options; neither is itself a biodynamic preparation. JPI's preparation collection includes Pfeiffer™ Field and Garden Spray, whose current activation and application directions should guide its use.

Published field work also reports positive, measurable outcomes. Goldstein, Koepf, and Koopmans (2019) reported 12–39% greater root dry matter and 10–37% greater root length in preparation-inclusive biodynamic treatments than organic comparisons, depending on crop, year, and application. Selected Washington biodynamic rotations had 7% more soil microbial biomass. These comparisons studied farming programs and treatments, not Pfeiffer™ Field and Garden Spray alone.

Begin with compost, cover crops or rotations suited to your site, and regular observation of soil and plants. Choose preparations with their current instructions in hand, then record what changes through the growing season. JPI's preparation guide offers a practical next step.

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How does this article define biodynamics?

It describes biodynamics as a whole-farm approach joining compost, crop rotations, biodynamic preparations, and attentive observation of soil and plants.
What measured soil and root outcomes does this article cite?

Goldstein and colleagues (2019) reported 12–39% more root dry matter and 10–37% more root length in preparation-inclusive biodynamic treatments than organic comparisons. Selected Washington biodynamic rotations had 7% more soil microbial biomass. These were program comparisons, not a test of one JPI spray.
What soil-building methods and biodynamic product does this article name?

The article names compost, biochar, and biodynamic preparations, highlighting JPI’s Pfeiffer Field and Garden Spray. It presents them as ways to care for living soil; follow the product’s current application directions.
How does compost support this biodynamic approach?

Compost returns organic farm materials to the soil. This article pairs it with rotations, biodynamic preparations, and close observation as part of whole-farm fertility care.

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