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