# Biodynamic Barrel Compound (BC) Kit

When access to biodynamic compost is limited, BC (BD Compound/Thun Barrel Compost) can be used to produce highly concentrated compost material that increases fertility and stimulates plant growth. Kits are recommended for BD gatherings and large acreage.

**Kit for Barrel Compost Single Batch  
**Treats 12.5 gallons or 2-1⁄2 five-gallon buckets of manure. Includes one set of compost preparations (BD#502 – #507) 500 grams of basalt, 100 grams of finely crushed eggshells. (You provide 12.5 gallons of manure, preferable biodynamic or organic from pastured cattle.)

**Kit for Barrel Compost Double Batch  
**Treats 25 gallons or 5 five-gallon buckets of manure. Includes two sets of compost preparations (BD#502 – #507), 200 grams of finely crushed eggshells and 1,000 grams of basalt. (You provide 25 gallons of manure preferable biodynamic or organic from pastured cattle.)

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**For additional information, visit: [JPI Preparation Articles & Instruction Handouts](https://cdn.shopify.com/s/files/1/0017/4473/2221/files/500_for_website.pdf)**

**Preparation guides:** [About Barrel Compound](https://go.jpibd.org/guide-bc) | [Barrel Compound instructions](https://go.jpibd.org/instructions-bc) | [BD 502–507 compost instructions](https://go.jpibd.org/instructions-bd-502-507)

**Shop components separately:** [Barrel Compound (BC)](https://go.jpibd.org/product-bc) · [BD 502–507 compost preparations](https://go.jpibd.org/product-bd-502-507-set)

## Details

- **Price:** 64.67 USD
- **Vendor:** The Josephine Porter Institute
- **Type:** Biodynamic Kits
- **Tags:** Biodynamic Kits, Biodynamic Preparations and Compost, Compost Preparations, Specialty Preparations, Spray Preparations

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 64.67 USD | In stock |

## Images

- Biodynamic Barrel Compound (BC) Kit - The Josephine Porter Institute
- Biodynamic Barrel Compound Kit contents on a clean studio background
- Biodynamic Barrel Compound Kit contents arranged in a top-down flat lay
- Biodynamic Barrel Compound Kit contents beside a covered compost area

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> Source: [The Josephine Porter Institute](https://www.jpibiodynamics.org/products/biodynamic-barrel-compound-bc-kit)
> Updated: 2026-08-27