Rhododendrons and Azaleas profiles over 4,000 varieties of this highly popular and striking plant. Illustrated with 1,100 colour photographs, each entry includes:Practical advice is also given on rhododendrons in the landscape, maintenance and husbandry, pests, diseases, problems and disorders, propagation, and buying and collecting rhododendrons, along with a brief history and a guide to their classification. · A description of the plant and flower colour· Notes on hardiness, height and spread, and flowering time· Advice on cultivation and proven performers· The name of the parent plants, the raiser and similar varieties