One with an informal design incorporating a profusion of ornamental and edible plants, frequently intermingled with close planting of borders and little or no use of lawns (grass or gravel paths): Plants give a wide range of interest including scent and vibrant colour; Use of local and natural sources of material for walls and paths; Containing structures such as, rustic wood arbours, wooden obelisks or seats, willow structures and pergolas made from wood, stone or brick; Often enclosed with visible walls/fences.