After giving insight into the spiritual concept of "yin and yang" and the deep-seated sociocultural emphasis on balance that underpin the approach, the author details the basic principles of Japanese tree pruning. He goes on to offer in-depth guidelines for sculpting pines, azaleas, conifers, evergreens, bamboos, and deciduous trees. He also places Japanese tree pruning in context, discussing what happens "behind the scenes" at Japanese nurseries and describing instances of niwaki in private and public gardens worldwide. Throughout the text, illustrations complement the detailed instructions, while photographs and anecdotes bring the ideas surrounding niwaki vividly to life.

Jake Hobson draws upon years of experience with Japanese gardens and landscaping. He spent a year at a nursery in Osaka, and in 2004 started his own business-Niwaki, Japanese Garden Tools. A keen observer of the artistry of gardens, Jake received his bachelor's degree in sculpture.