"The RHS A-Z Encyclopedia of Garden Plants remains the ultimate plant guide for gardeners. The most definitive work of garden reference has been completely revised and refreshed for this 4th edition, bringing it up-to-date with the latest developments in gardening. Unrivalled in authority and range, this single-volume guide has over 15,500 entries from Abelia to Zygopetalum. Edited by Christopher Brickell, former Director General of the Royal Horticultural Society, and with over 6,000 beautiful photographs and precise artworks, The RHS A-Z Encyclopedia of Garden Plants is the only garden reference encyclopedia you will ever need. With an introduction to the plant kingdom, flower types, and plant problems, as well as clear, detailed growing advice for every plant all wrapped up in a beautiful gift box, The RHS A-Z Encyclopedia of Garden Plants is the definitive garden reference guide for every gardener."