Companion Plants

And How To Use Them

Helen Philbrick and Richard B. Gregg; Introduction by Herbert H. Koepf

Out of print

Quick Look

A detailed and comprehensive A-Z reference book of plants and how they affect each other favourably and unfavourably.

203 x 136 mm
Biodynamic Farming & Gardening Association
Biodynamics & Organics
120 pages
Publication date:
01 Jan 2008
2nd edition


In 1943, Richard Gregg published a small pamphlet on Companion Planting (still available today), which listed certain plants which seemed to affect each other both favourably and unfavourably, when grown near to each other. Helen Philbrick subsequently worked with the Gregg family and later published this expanded edition.

This useful reference book is a detailed and comprehensive A-Z of plants and how they affect each other and their surrounding environment, including the soil, insects and birds. It will be of great value to farmers and gardeners alike.


'Any grower, whether working in large fields or small gardens, should find Companion Plants and How to Use Them an invauable guide to what to plant and where to plant. Having a knowledge of the mutual influence of one living organism on another is indispensable, especially for those working in organic or biodynamic situations where there is a need to combat plant pests and diseases without resorting to the use of toxic substanes. Following the advice given in this book may well lead to improved results in the quality, resilience and yield of plants and help avoid the failures and disappointments that might ensue from unwittingly placing plants that are not the best of friends in close proximity.'
--New View


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.


This book is an updated and revised edition of the older pamphlet by Richard Gregg, Primer of Companion Planting, which is now out of print. The information in Companion Plants is organised in a different way, but all the great tips and and insights from the older book are included.

You may also be interested in our other biodynamic books:
Pfeiffer's Introduction to Biodynamics
Weeds and What They Tell Us
Koepf's Practical Biodynamics
Biodynamic Manual

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