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Biodynamic Preparations

BD #508 Horsetail Herb (Equisetum arvense) BD Spray Preparation

BD #508 can be used for soil or foliar applications, especially when conditions are too wet. It helps discourage fungal disease. One unit of the dried herb makes 3 gallons of fresh tea, enough to treat one acre, or 10 gallons of fermented tea.

Fresh Tea Instructions for BD #508 Bring 1.5 ounces or 1 unit of horsetail herb to a boil in one quart of water. Allow cooling. Strain and dilute adding 3 to 5 gallons of water. Stir vigorously for 20 minutes. Apply using a fine mist spray to the foliar parts of targeted plants.

Fermented Tea Instructions for BD #508 Bring one unit or 1.5 ounces of horsetail herb to boil in one gallon of water and simmer for one hour. Let cool and transfer to a crock or other storage container with a loose-fitting lid. Store this in a cool place, e.g. basement, and allow to ferment for 10 to 14 days, until the fermented tea has a strong sulphuric aroma. Strain the remaining herb particles out, fill the tea in a glass jug, and store it in a cool dark place until ready to use. It can be stored for 6 or more months without losing effectiveness. To use, add 1/2 gallon of fermented tea to 4 1/2 gallons of water, stir vigorously for 20 minutes, and use to treat up to 1 1/2 acres. One unit of horsetail can thereby treat up to 3 acres with as powerful effect as can be achieved by the fresh tea recipe on only one acre. The ratio for diluting is one part fermented tea to 9 parts water.

The fermented BD #508 should be applied as a soil spray, whereas the fresh tea version is the form used as a foliar spray.

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

Additional Article: BD #508 JPI Horsetail Fresh Tea and Fermented Tea Instructions, Brief Instructions: 500, 501, 508