Here’s the wall of a vineyard road in Germany (Schlossberg, Rüdesheim am Rhein)
Vineyard Stair, a Self-watering garden zone.
The wall collects water and delivers it to a reservoir. Here, the land is reformed to grow a native plant, riesling.
Here’s the wall of a vineyard road in Canada (Vineyard at the Rise, Vernon)
The native plants are gone (erosion), the soil is flowing away (erosion), water is piped in (erosion.)
So live the Canadians, on land that is not theirs. Pity them. They don’t have a clue.