Can you please recommend a screen to cover a high wall at the rear of a long narrow garden, overlooked at rear? Privacy is an important goal. I would like year-round interest if possible.
A long narrow garden might only allow screening for part of the over-looking houses … the ones on either side still being visible at an angle at the house end. You migh consider a hedge or screen, lower in size, at about two metres, closer to the house, behind which you can sit and use the garden without being overlooked.
A division of a long narrow garden into two parts can be very effective by creating two ‘rooms’, and these give the impression of more space and can be used for different uses.