For a high-end backyard look without high-end expense, try this interesting technique: Espalier a tree. It's easier to create a living fence than it looks, and it can be used to add visual interest and texture to a blank wall.
Black green and white. This garden was created by Ludo Dierckx , Belgian landscape for a client of Rotterdam, the Netherlands. The use of white flowers , along with lavender and buxinhos convey elegance to the design.