Form and Fabric in Landscape Architecture by Catherine Dee is a visual study of various landscape design concepts. A wide variety of different techniques are explored using black and white sketches along with short descriptions of their application in the overall landscape.
This book was recommended by a designer who came to speak during a PDC I attended at Paul's place. The information presented in the book is good, and there's really quite a bit covered as far as different techniques used to create visual interest in the landscape.
The reason this book didn't get a better rating from me is that the presentation of the material really leaves a lot to be desired in my opinion. The illustrations used throughout the book are all rough pencil sketches that are universally blurry and often very busy. I would have liked this book much better if it included crisper sketches or better yet proper illustrations and photographic examples of the subject matter.
"Instead of Pay It Forward I prefer Plant It Forward" ~Howard Story / "God has cared for these trees, saved them from drought, disease, avalanches, and a thousand tempests and floods. But he cannot save them from fools." ~John Muir