Portfolio. The long thin garden . This typical turn of the century terraced cottage had a garden only 5m wide by 32m in length. Overlooked by a block of flats at the back, the garden needed not only privacy, but to relax and entertain, and somewhere to indulge the owners passion for plants. The long thin garden - JoaNNA COWAN - GARDEN DESIGN Please note: You are currently browsing img creative ideas for a long narrow garden design that is 533x711px in size. This image is listed in long thin garden ideas uk category. The long thin garden JoaNNA COWAN GARDEN DESIGN, 533x711 in 105.28 KB.