Written from the perspective of an urban forester and certified arborist, the reader will have a basic understanding of what makes a tree a tree in context to the philosophical and cultural underpinnings of Urban and Community Forestry, and learn how to implement model, time-tested global green practices and initiatives derived from citizen science. Written from the perspective of an urban forester and certified arborist, the reader will have a basic understanding of what makes a tree a tree in context to the philosophical and cultural underpinnings of Urban and Community Forestry, and learn how to implement model, time-tested global green practices and initiatives derived from citizen science. Naomi Zürcher is an Urban Forester, an ISA Certified Consulting Arborist and an affiliate member of the USA I Tree team in Luzern, Switzerland.