The fence between my property and neighbour on the high side is a wooden pailing fence sitting on a concrete retaining wall. We have the rail and post side.
My original idea was to attach cement board to the rails and then attach a PVC green wall to the two outer panels and decorative screens on the centre panel. I have already attached the boards which also give privacy due to the gaps in the good neighbour fence.
I would like to change this idea to something similar to the attached picture.




Would would be the best material to use noting niche corners and gaps in boards etc.
Any solutions or ideas different to mine are appreciated.