Public domain preparation

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About the Preparation -

Preparation name
Biodynamic 'compost' preparation 502 - Yarrow
Preparation category
Public domain formulation
General description
Quickens and refreshes the soil, making good [any] exploitation. We re-endow the manure with the power, so to quicken the Earth that the more distant cosmic substances - silicilic acid, lead etc which come to the Earth in finest homoeopathic quantities - and caught up and received.

Effect on Plants -

Effect on Soil -

Soil characterisation

Mycorrhiza (58)

Detoxifying (294)

Top soil

... addresses itself in a specific way to the realtionship between nitrogen and potassium in the soil. (34)

The yarrow preparation yielded the highest mycorrhizal fungi readings Elaine Ingham of SFI tested in her laboratories, and these mycorrhizal fungi are some of the most important organisms for the formation of humus and the storing of energy and nutrients in an insoluble but available state in the soil. (58)

My radionic experiments show 502 to be one of the best BD preps for detoxifying the soil. (294)

Notes and Academic Papers

quickens and refreshes the soil, making good exploitation.... that the more distant cosmic substances - silicic acid, lead etc which comes to the Earth in homeopathic quantities - might be caught up and received [R Steiner]. (20)

Effects on Compost and Manure -


Nitrogen 'status' (1828)

Inner heap

Through each stage of development, the potassium is increasingly released from its terrestrial nature, becoming more refined and rarefied as it is dissolved. This process culminates in the flower: the part of the plant that opens up to the influences streaming in from the cosmos. The yarrow preparation seeks to preserve this moment of flowering and the forces that underlie it. It revitalises soil that has been exhausted through over-cultivation..... The purpose of the yarrow preparation and, in a modified way, the other compost preparations too, is to bring a ‘light effect’ to the decaying organic materials arising on the farm. This enables these farm manures to become sensitive to the cosmic archetypes that exist beyond space and time. (1565)

The Achillea preparation was specifically able to improve the N status of the microbial community as indicated by the higher catabolic use of D‐glucosamine as well as the amino acids γ‐aminobutyric acid, L‐cysteine, and L‐leucine. The reason for different effects of the sole Achillea preparation and all 6 preparations cannot be explained by the current study. (1828)

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