Green wedges: the resilience of a planning idea

This chapter examines the development of a planning idea that has made its mark in manifold formats since its inception in the early twentieth century: the green wedge idea. The central argument theorises that the green wedge idea has morphed into different urban models aimed at answering fundamental planning questions to date. Initially, it presents precedents of planning for a balanced relationship between the city and nature. The chapter then shows how the idea emerged in discussions related to how modern cities should be planned to ensure access to nature. The contrast between the green wedge idea and that of the green belt is posed. In the sequence, the chapter analyses the green wedge models derived from the initial idea, namely the belt–wedge, the polycentric city and the corridor–wedge. Finally, the chapter argues that the green wedge idea adapted through time and space, responding to planning culture and to the needs of cities and regions. The resilience of this planning idea suggests that green wedges can adapt and, in so doing, contribute to respond to our contemporary challenges of urban growth, the need for intra-urban quality green spaces and the quest for urban sustainability