The very nature of plant form and structure gives identity to a garden or to a specific planting scheme. Using forms that complement with their immediate and wider surrounds gives an overall structure. The relationship between these elements allows for further contrasting form elements to be introduced. The consistent theme of strong rounded shapes in the images below is supported by contrasting linear forms of foliage in the wider background giving an overall strong structure to the scheme. Good use of these elements will help create strong identity to the overall garden design.