The use of native vegetation is a continuing reference to Chicago’s place within the Midwestern prairie. All limestone, quite possibly the most obvious stone inside the garden, is from a local, Midwestern quarry. Furthermore, the Shoulder Hedge serves as a significant “hedgerow” shelter for birds and also other nearby wildlife. http://stonewallnationalmonument79910.develop-blog.com/9541143/lurie-garden-of-chicago-an-overview