Trees form the mainstay of the garden; they give a place to shelter, catch the wind to weaken its force, provide focal points, announce areas denoted to a certain activity and serve as bold forms that influence the route the planting scheme takes. Some have such huge leaf canopies that they form a part “ceiling” too.

The work of shrubs is to provide a framework of different shapes, textures, colours and densities. Fast- growing shrubs are used to screen off unwanted views while taller ones may join the work of trees to form the backbone structure...