Use rectangles to create a zig-zag plot: A series of rectangular lawns or any other ground cover or paving of your choosing - pebbles, decking - are laid at right angles to each other. They traverse the garden, giving strong direction. By Diarmuid Gavin.
Belgravia House in London by Todhunter Earle. Even though this is a rooftop garden, the design show would be excellent for any long, narrow yard. Great way to break up the space by making different "zones"!