The white strip in the middle of lawn design

Quick answer：

The white strip in the middle of a lawn design is often referred to as a 'path' or 'aisle'. It is a strategically placed area that provides a clear route through the lawn, typically made of materials like concrete, stone, or mulch. This feature enhances the aesthetics of the lawn and ensures easy navigation. The design of the white strip can vary depending on the overall lawn layout and the preferences of the homeowner or designer.