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The Josephine Porter Institute

Biodynamic Horn Manure Preparation (BD 500) — Spray Preparation

Biodynamic Horn Manure Preparation (BD 500) — Spray Preparation

Regular price $12.35 USD
Regular price Sale price $12.35 USD
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At a Glance:

One unit is 1/4 cup.
One unit treats one acre.

What it does:
Vitalizes the soil and stimulates root growth. Builds humus, enlivens soil microbial life, and helps ground the plant in the forces of growth and reproduction.

How to use:
Stir one unit for one hour in 3 gallons of lukewarm rainwater or other chemical-free water, ideally in the late afternoon. Spray immediately on moist soil, not on foliage. Best applied in spring and fall, and before planting or transplanting.

Ingredients:
Cow manure aged underground for 238 days. The cow horn is used only as part of the traditional production method; no horn material is contained in the finished preparation.

Organic pre-harvest interval:
Under Accredited Certifiers Association guidance for horn manure, the applicable 90- or 120-day interval begins when the filled horn is buried. This preparation is aged underground for 238 days, so that interval has elapsed before the finished product is removed and sold. Application does not restart the interval.

Use:
For agricultural use only. Apply to soil after stirring and dilution as directed. Not for human or animal consumption.

🌱 Learn More about BD 500 Horn Manure

Product Details:

BD 500 stimulates seed germination, root growth, and humus formation. Use when planting, transplanting or turning in cover crops.

How to use BD 500

Stir one unit for one full hour in 3 gallons of lukewarm rainwater or other chemical-free water. During the last 20 minutes, add one unit of BD 507 per acre for best results. Spray immediately after stirring, during the latter part of the day, directly on moist soil. Part portions may be used for smaller areas, keeping the same proportions and stirring for the full hour.

Variant note: The current BD 500 handout provides the standard application directions shown above. For questions specific to the prepotentized 500X option, contact JPI before application.


BD 500 Detailed Usage Instructions: English | Spanish | Chinese 

Additional Article: BD 500: Reflections on Making BD 500

Please note: Quantities over 1 may be bagged together.

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Frequently Asked Questions

How do I use Biodynamic Horn Manure Preparation?

Stir one unit for one full hour in 3 gallons of lukewarm rainwater or other chemical-free water. Spray immediately in the latter part of the day, directly on moist soil.

What is the coverage area for BD 500?

One unit treats up to one acre. For a smaller area, use the same proportional part of the preparation and water, and stir for the full hour.

When should BD 500 be applied?

Apply BD 500 in spring and fall, ideally before planting or transplanting, to maximize soil and plant vitality.

Can BD 500 be combined with other preparations?

Yes. For best results, add one unit of BD 507 per acre during the final 20 minutes of the one-hour BD 500 stirring.