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Biodynamic Preparations

BC - Biodynamic Compound Spray Preparation (Adapted from Maria Thun's Barrel Compost Recipe)

Barrel Compost is based on Maria Thun’s recipe. It contains BD #502-507, basalt and eggshells. It is used when access to BD compost is limited or unavailable. It should not be regarded as a long-term substitute for BD compost.

How to use BC Biodynamic Compound Spray
Stir for twenty minutes in 3-5 gallons of water per unit. It should be applied immediately after stirring. One unit is enough for up to one acre. Bc should be applied in the afternoon.


For additional information, visit: JPI Preparation Articles & Instruction Handouts

Additional Articles: BC About Barrel Compost InsertBC Barrel Compost & Maria Thun