Bob Flowerdew's Complete Book of Companion Gardening by Bob Flowerdew
All experienced gardeners practise companion gardening, although some of them may not realize it. The concept is very simple: the conditions in which a plant grows and the plants that grow near it affect its well-being in one way or another. Some plants are useful because they shade smaller ones; some accumulate minerals that benefit others; some attract pests and can be used as sacrificial plants alongside a more valuable crop; others just seem to do better with certain plants nearby. Based on years of experience and observation, this book is a celebration of colourful and sympathetic planting which aims to encourage gardeners to pay closer attention to the care of their plants. The author also wrote The Companion Garden.