Perennials can form a key part of a garden's structure and are dynamic and colorful plants whose forms and textures can be used to alter moods and influence the way we respond to and use a garden. The first section of this book shows how to create garden schemes with perennials, and the second section looks at the best perennials for year-round planting and color effect. A third section considers how to use perennials in different styles of garden...