This book presents the meaning of green infrastructure and its concerns to the contribution of materials and applications. It explores the evolving contested material under “green infrastructure” covering timber, concrete, soil, and pavement. It discusses the resistance to the ambiguity of managing the construction of green infrastructure and drawing on wider debates around applications and processes on construction. These contributions are by no means definitive, but rather an attempt to provide a detached and holistic perspective on the engineering “green infrastructure” concept.