Herbert H. Koepf
About
Richard Gregg was an early pioneer of companion planting. In the 1940s, he and Evelyn Speiden Gregg used their own garden to experiment with different plants.
Author's Books
Koepf's Practical Biodynamics
Soil, Compost, Sprays, and Food Quality
Floris Books
The Biodynamic Farm
Agriculture in Service of the Earth and Humanity
SteinerBooks
FLO