The vertical garden prototype was reproduced (times 3), painted, mounted on fence, filled with potting mix and plants. Unfortunately the local possums decided that sushi train had come to town, and ate the tops of most things. We had no time to address the damage as we were about to head off on our camping trip.
But since we came back we've erected possum deterrent and an automatic watering system and everything is coming on nicely, both in the vertical and horizontal gardens.
On left, two lengths of vertical garden, below, all three.
Horizontal garden - still room for some more plants, but looking pretty.
Geranium slips, recovering from possum depradation.
Despite being eaten down to bare stems, they are growing. Possum deterrent (gutter guard tacked to the fence) seems to be working.