Making our biodynamic preparations
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Making our biodynamic preparations

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On Saturday we finished spraying the #508 Biodynamic preparation on our grape vines, which are in the Napa Valley. We used to buy horsetail (Equisetum arvense) but now we grow the plant along a creek in our American Canyon Vineyard, harvest it, then dry it at our barn in Calistoga. Then we make a fermented tea that we then spray on the leaves to counter fungal diseases.