This study highlights the species in cultivation, but also provides details on numerous plants still only found in the wild, with accompanying maps to show the distribution of the different groups. The gardener will find advice on plant selection combined with comprehensive information on how to grow and care for them, including tips on matters such as propagation, pruning, and pests and diseases. With analyses of the origin of many cultivars, helpful identification keys and more than 150 full-colour photographs, this text will prove accessible to the gardener, horticulturist and botanist alike.