"A thorough update and the introduction of new topics such as biodiversity and conservation has greatly enhanced this new edition: it is a "must read" for all interested in horticulture and gardening." —John MacLeod, RHS Professor of Horticulture Most conventional gardening books concentrate on how and when to carry out horticultural tasks such as pruning, seed sowing and taking cuttings. This book is unique in explaining in straightforward terms some of the science that underlies these practices. It is principally a book of "Why" – Why are plants green? Why should one cut beneath a leaf node when taking cuttings? Why do plants need so much water? But it also goes on to deal with the "How", providing rationale behind the practical advice.The coverage is wide-ranging and comprehensive and includes the basic structure and functioning of garden plants, nomenclature, genetics and plant breeding, soil management, environmental factors affecting growth, methods of propagation and production, pest and disease control, post harvest management and storage, and conservation and sustainable horticulture.Now with full colour throughout, the second edition provides the reader with:Completely revised and updated chapters from the first edition, with new information and clearer focus on the topicsFour new chapters, dealing with matters that have become of increasing concern since the first edition, namely: Diversity in the Plant World; Conservation and Sustainable Gardening; Gardens and the Natural World; and Gardens for SciencePublished on behalf of the Royal Horticultural Society, this book remains a key text for those sitting RHS examinations, particularly at levels 2 and 3; it will also appeal to gardeners, growers and scientists.Key FeaturesBestselling essential text for all horticulture studentsEdited and written by a group of highly regarded scientistsCovers the scientific information of greatest importance to gardeners and horticulturistsJargon-free scientific explanations, a comprehensive glossary, and copious colour illustrationsRoyalties from the sale of this book go towards the charitable work of the RHS, promoting horticulture and helping gardeners. www.rhs.org.uk