I refer to this book constantly. There are about 750 hostas with descriptions and a very nice photo of each. As well as size, origin and a detailed description, each entry has info on substance, texture, growth rate, flower, and fertility. I also like how they list any similar-looking hostas.
The chapters are divided according to colour and leaf variegation. If you love hostas, there's no question you'll love this book.
This is one of my hosta bibles - I rely on it whenever I need information regarding hostas, particularly when selecting hostas to purchase and where to plant them.
Grenfell has provided a photo of each hosta along with information regarding size; clump size/habit; detailed description of leaf blade, petiole, and flower; comments and special needs; distinguishing features; similar hostas; sports. The book is divided into sections based on hosta color and variegation, unusual markings, and she has provided a section for hosta connoisseurs.
She has also included information regarding hosta history, botany, seed, hybridizing, landscaping/design, pests/diseases/threats.
I'm fairly new to growing hostas and this reference book has proved to be an invaluable tool in helping identify unnamed hostas I have collected from friends. So far, I have been able to find every named hosta I have in "The Color Encyclopedia of Hostas." The book has beautiful color photograhs of hundreds of hostas, and includes information on special growing needs and other relevant topics of interest relating to hostas. I recommend this book to both new and old green thumb growers of hostas.