Books by Richard B. Gregg
Companion Plants and How to Use Them
Helen Philbrick and Richard B. Gregg; Introduction by Herbert H. KoepfeBook
A detailed and comprehensive A-Z reference book of plants and how they affect each other favourably and unfavourab... Read more
Companion Plants: An A to Z for Gardeners and Farmers
Helen Philbrick and Richard B. Gregg; Introduction by Herbert H. KoepfA detailed and comprehensive A-Z reference book of plants and how they affect each other favourab... Read more
Out of print
- Companion Plants: And How To Use Them Helen Philbrick and Richard B. Gregg; Introduction by Herbert H. Koepf
- Primer of Companion Planting: Herbs and Their Part in Good Gardening Richard B. Gregg