1. Hedges: These are useful to divide the garden into sections so as to direct the visitors to a central object. They are sown and grown just like fence. The plants are pruned at a height of 3-4 ft.
Ornamental hedges: A good live hedge .is essential to enclose a garden (e.g. Thevetia nereifolia and Divi etc.). Ornamental internal hedges can also be planted inside the garden with attractive foliage or flowering shrubs. These are pruned to maintain a height of 50 to 60 cm. They help to divide the garden into a number of parts; each will have its own distinct features.
Eg: Clerodendron inerme
2. Edges: These are row of plants which do not exceed one foot height. They are grown along the path and around the flower bed. Non- living material like bricks and tiles are also used for this purpose. The foliage edges are trimmed and flowering edges are not trimmed. When the edge lines a flower bed they divide the garden plants from the green lawn by contrast to the color of the foliage.
Edges or edging: These are the materials of any description which are used in gardens for dividing beds, borders etc. from roads, walks or paths, demarcating spaces allotted for particular purposes as flower beds. These can be either dwarf growing plants (Eupatorium, Alternanthera) which would stand frequent trimming or they may be made of bricks, stones or concrete slabs.
Eg: Alternanthera. sps
3. Carpet beds: In large public gardens, close growing plants like Eg: Verbena or Altenanthera are used to form certain designs or letters of alphabets. Foliage plants are better suited than flowering plants as they stand severe clipping much better. Carpet beds are troublesome to maintain in good health. They require constant attention. The plants should be trimmed now and then, not allowing them to overgrow
Plants of different color foliage which can be clipped close to the gound are chosen for planting on the ground. Such a feature is known as carpet bed. Design may be conventional, geometrical or a map or clock on a sundial occasionally dwarf flowering plants may also be used for carpet beds. Eg: Alternanthera sps, Portulaca etc.,