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This journal publishes practical guides and research notes on biodynamic agriculture and soil vitality.

clay soil

Jun 4, 2025

biodynamic agriculture / clay soil / compost / etheric forces / humus / loam / sandy soil / soil fertility / soil types / Steiner

Compost and Soil Fundamentals
Discover how sandy, clayey, silty, and loamy soils shape plant life. Learn how compost and humus restore vitality, with insights from Steiner, Pfeiffer, and modern science.  

Biodynamic Preparations

Biodynamic Beginner Kit

Biodynamic Beginner Kit

$72.20
Complete Set of Biodynamic Compost Preparations (BD #502-507) - The Josephine Porter Institute

Complete Set of Biodynamic Compost Preparations (BD #502–507)

$38.63
Biodynamic Horn Manure Preparation (BD #500) BD Spray Preparation - The Josephine Porter Institute

Biodynamic Horn Manure Preparation (BD 500) BD Spray Preparation

from $11.54
Biodynamic Pfeiffer™ Field and Garden Spray - The Josephine Porter Institute

Biodynamic Pfeiffer™ Field and Garden Spray

from $29.12
Biodynamic Pfeiffer™ Compost Starter - The Josephine Porter Institute

Biodynamic Pfeiffer™ Compost Starter

$14.56
Biodynamic Horn Silica Preparation (BD #501) BD Spray Preparation - The Josephine Porter Institute

Biodynamic Horn Silica Preparation (BD #501) BD Spray Preparation

from $4.50
Biodynamic Horsetail Preparation - Equisetum arvense (BD #508) BD Antifungal Spray Preparation - The Josephine Porter Institute

Biodynamic Horsetail Plant Preparation - Equisetum arvense (BD 508) BD Antifungal Spray Preparation

$6.08
BC - Biodynamic Compound Preparation (Adapted from Maria Thun's Barrel Compost Recipe) BD Spray Preparation - The Josephine Porter Institute

Biodynamic Barrel Compound Preparation (BC) Spray Preparation

$10.32
'Prepared' 500 Horn Manure Preparation (BD #500P - Alex Podolinsky Method) Biodynamic Horn Manure PLUS all Compost Preparations - The Josephine Porter Institute

'Prepared' 500 Horn Manure Preparation (BD 500P – Alex Podolinsky Method) Biodynamic Horn Manure PLUS all Compost Preparations - Spray Preparation

$13.24