Amazon.com description: Product Description: This book encompasses a vast range of plants grown on a domestic or commercial scale in private gardens or present in specialist and botanical collections. They are plants grown for ornament, for amenity or for economic use, and they include a selection of cultivars. 50,000 plants are described, including many hundreds of cultivars. It gives concise botanical accounts of species in cultivation throughout the world, in line with the latest taxonomic thinking and it gives practical advice on how to grow every plant described. There are over 500 articles on horticultural science and practice, newly commissioned from leading authorities.