Herbert H. Koepf

Helen Philbrick (1910-2011) worked with Richard Gregg and Evelyn Speiden Gregg to experiment with companion planting. She wrote extensively on the subject. 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.

Also by this Author

Companion Plants and How to Use Them

Helen Philbrick, Richard B. Gregg

Paperback

Koepf's Practical Biodynamics

Herbert H. Koepf

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Readings in Goethean Science

Johann Wolfgang Goethe, Rudolf Steiner

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Nitrate

Herbert H. Koepf

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The Biodynamic Farm

Herbert H. Koepf

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