It is now more urgent than ever to plant trees in cities. The will seems to be there, and when there's a will, there's a way—but not just any old way! This is the paperback edition of a work originally published in 2010. It provides ways for understanding and developing practices that are respectful of urban greenery and answers questions common not only to the average citizen, but also designers, engineers, administrators, and elected officials, and more generally, anyone who loves trees.