This wonderful little book covers everything you need to know about the types of plants known as weeds. Ehrenfried Pfeiffer discusses the different varieties of weeds, how they grow and what they can tell us about soil health. The process of combatting weeds is discussed in principle as well as in practice, so that it can be applied to any situation. First written in the 1950s, this is still one of the best overviews of the subject available.

Ehrenfried Pfeiffer was a pioneer of biodynamics in North America. This short but comprehensive book is a collection of three key articles introducing the concepts, principles and practice of the biodynamic method, as well as an overview of its early history. The book also includes a short biography of Ehrenfried Pfeiffer by Herbert H. Koepf.

This book brings together the best advice for cultivating fruit trees, berries and shrubs using biodynamic methods, with the aim of harvesting healthy fruit free of pesticides. Ehrenfried Pfeiffer discusses the principles of tree biology before describing the measures that can be taken to develop a pest-free orchard without the use of chemicals, including soil preparation, the selection of trees for planting, issues of transplanting and pruning, the application of pastes, green cover crops, and pest control. Michael Maltas ran fruit tree experiments on his biodynamic farm in Missouri for four years. The results are recorded in a highly practical annual spraying schedule for orchards, which is reproduced in this book. A month-by-month calendar gives information on specific methods and controls, based on Maltas's extensive experience. This is an invaluable book with practical advice on all aspects of planning and maintaining a healthy orchard. This is a thoroughly revised and updated combined edition of 'Biodynamic Treatment of Fruit Trees, Berries and Shrubs' by Ehrenfried Pfeiffer and 'Orchard Pest Management and Spray Schedule' by Michael Maltas. Published in association with the Biodynamic Farming and Gardening Association of North America.