Companion Plants: An A to Z for Gardeners and Farmers

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

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Quick Look

  • A comprehensive A-Z of which plants affect each other, both favourably and unfavourably, when grown close together
  • Essential tool for all farmers and gardeners Leads to improved results in quality, resilience and yield

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

198 x 130 mm
Floris Books
Biodynamics & Organics
112 pages
Publication date:
15 Sep 2016


It has long been observed, by farmers, gardeners and botanists alike, that from time to time certain plants seem to affect certain other plants growing their near them -- both favourably and unfavourably. By taking account of these relationships, farmers and gardeners can improve the quality of food and flowers, reduce losses from pests and disease, drought and frost, and enhance both satisfaction and pleasure in their work and financial profit.

Years of experimentation by Richard Gregg and subsequently Helen Philbrick and others resulted in this unique reference book. It offers a detailed and comprehensive A-Z of plants and how they affect each other and their surrounding environment, including the soil, insects and birds.


'The first version of this book came out as early as 1943 and is based on the observation that certain plants seem to affect others growing near them in both a favourable and unfavourable manner. This knowledge can enable us to improve the quality of our food and flowers and reduce losses due to pests and disease. [...] Readers will be able to test and
confirm the suggestions for themselves. '
-- Network Review


Helen Philbrick (1910-2011) worked with Richard Gregg and Evelyn Speiden Gregg to experiment with companion planting in the Gregg's own garden. 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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