What Are The Biodynamic Preparations?


There are nine core biodynamic preparations, they are used to improve soil health. Each preparation is used for different reasons, depending on the qualities inherent within them. For example, the stinging nettle compost preparation 504, relates to the nitrogen and iron and stimulates the breakdown of organic materials in the compost.

Biodynamic PreparationSourceQualityApplication
500 Cow Horn ManureFresh cow manure, and cow hornsEnhances the life of the soilSpray
501 Cow Horn SilicaClear quartz (Silicon dioxide) triturated into a fine powder Increases plant immunity and enhances ripeningSpray
502 YarrowFlowers of Yarrow (Achilea millefolium) Helps the soil drawn in substancesAdded to Compost
503 CamomileFlowers of Camomile (Matricaria chamomila)Helps to stabilise plant nutrients and invigorate plant growthAdded to Compost
504 Stinging Nettle Whole Stinging Nettle (Urtica dioica)Develops sensitivity in the soil, and helps to stabilise nitrogenAdded to Compost
505 Oak BarkOak Bark (Quercus robur)Helps increase a plants resistance to diseaseAdded to Compost
506 DandelionFlowers of Dandelion (Taraxacum offcinale)Activities light influences in the soulAdded to Compost
507 Valerian Flowers of Valerian (Valeriana officinalis) ProtectionSprayed over Compost
508 HorsetailFlowers of Horsetail (Equisetum arvense)Prevents fungal diseases, and balances the water elementsSpray

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