Written by over 250 of the world's leading horticulturists & botanists, THE NEW RHS DICTIONARY provides the most detailed information & up-to-date botanical descriptions available of over 50,000 plants in North America & Europe (including 20,000 cultivars), reflecting radical changes in plant taxonomy in recent years. THE NEW RHS DICTIONARY also provides practical guidelines for growing each plant successfully, incorporating the latest USDA climatic zones & advocating environmentally responsible cultivation methods. The text is accompanied by over 4,000 beautiful illustrations. THE NEW RHS DICTIONARY also provides 180 essay-length articles on the art, craft, science, & history of gardening: from Japanese gardening to pruning to genetic engineering to the history of gardening in the USA. Appendices include: Index of Popular Names, Glossary of Pests & Diseases (advocating biological means of pest control), & glossaries & bibliographies.To order call: 800-221-2123. In NY state call 212-673-4400.