• Biodynamic Stinging Nettle Preparation – Urtica dioica – BD 504 BD Compost Preparation - The Josephine Porter Institute
  • Biodynamic Stinging Nettle Preparation – Urtica dioica – BD 504 BD Compost Preparation - The Josephine Porter Institute
  • Biodynamic Stinging Nettle Preparation – Urtica dioica – BD 504 BD Compost Preparation - The Josephine Porter Institute
  • Biodynamic BD 504 Stinging Nettle Preparation package on a clean studio background
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The Josephine Porter Institute

Biodynamic Stinging Nettle Preparation – Urtica dioica – BD 504 BD Compost Preparation

Biodynamic Stinging Nettle Preparation – Urtica dioica – BD 504 BD Compost Preparation

$6.79 USD
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Description

One unit is 1 heaping teaspoon.

At a Glance:

What it does:
Supports biodynamic composting as the stinging-nettle member of the BD 502–507 set. In a 2026 laboratory comparison, an Italian BD 504 material stimulated growth of selected compost-associated bacteria.

How to use:
Use the finished preparation as part of a complete BD 502–507 set. Make six holes evenly across the compost pile and place this unit into one of the first five holes, about halfway down the pile. Close the hole with old compost or good soil so no air pocket remains. One complete set treats up to 15 tons of compost; use the full set on smaller piles also.

Ingredients:
Stinging nettle (Urtica dioica).

🌿 Learn More about BD 504 Stinging Nettle

Product Details:

Research spotlight: In a 2026 in-vitro comparison of individual compost preparations, a BD 504 sample from an Italian producer gave the strongest Ureibacillus terrenus growth response and was the only preparation to significantly stimulate Parapedobacter luteus. Separately, a 27-year field experiment found distinct soil-microbial functional profiles after manure compost was prepared with the full BD 502–507 set; it also compared a yarrow-only treatment. Use JPI’s finished BD 504 with the complete compost set as directed below.

For complete application directions, visit: BD 502–507 Detailed Usage Instructions

Please note: Quantities over 1 may be bagged together.

Frequently Asked Questions

What is Biodynamic Stinging Nettle BD 504 used for?

BD 504 is JPI’s stinging-nettle preparation for the BD 502–507 compost set. Place the finished material in its own hole in a moist compost pile. In a 2026 laboratory comparison, an Italian BD 504 sample gave the strongest Ureibacillus terrenus growth response among the individual preparations tested and was the only one to significantly stimulate Parapedobacter luteus. A separate 27-year field experiment found distinct soil-microbial functional profiles after compost was prepared with the full BD 502–507 set.
How do I use the Biodynamic Stinging Nettle BD 504 preparation?

Use the finished preparation as part of a complete BD 502–507 set. Make six holes evenly across the compost pile and place this unit into one of the first five holes, about halfway down the pile. Close the hole with old compost or good soil so no air pocket remains. One complete set treats up to 15 tons of compost; use the full set on smaller piles also.
What are the main ingredients in Biodynamic Stinging Nettle BD 504?

The main ingredient in Biodynamic Stinging Nettle BD 504 is stinging nettle (Urtica dioica).
Can I buy more than one unit of Biodynamic Stinging Nettle BD 504?

Yes, you can purchase multiple units. Note that quantities over one may be bagged together.