This long narrow garden was dominated by a large summerhouse and central concrete path. The owners wanted a garden design to create different zones within the garden - each with their own distinctive feel. Long Narrow Garden Design - Garden Visions Please note: You are currently browsing img our top 6 exclusive long narrow garden ideas revealed that is 1600x1200px in size. This image is listed in long thin garden ideas uk category. Long Narrow Garden Design Garden Visions, 1600x1200 in 411.93 KB.