With the "garden city" movement, wall gardens experienced a boom because beautiful green ups and the self-sufficienct trellis fruit were the cornerstone of this new philosophy. In Jena, Weimar, Leipzig and elsewhere trellises started to show up on walls and gardens from this time. Trellis bars and lattices were typical in the checkered pattern, without emphasizing the strongly protruding vertical ends of the lattice. The lattices were trimmed for style.
The idea of a "green town " was often adopted exclusively in the native countries revival style. Soon thousands of modest detached houses were built promoted by the new savings and loan associations. Green up trellises were now laid out, created, and rose up in "social housing buildings". This idea married the "international style" from time to time. Even hospitals and industrial buildings then became greened, mostly with self clinging climbers, that didn't need a cable or wire system.
The greening up building trend subsided when it was realized that roses and clematis also needed time, a lot of care and cut back trimming. It was the same with the fashionable fruit trellises: Without permanent care no reward was to be won here. And it was finally World War II, circa 1940, which halted the facade gardens and threw them back by a decade. What was left of facade greening by then in the 1950's was that the heirs and successors often had no idea about the care and trimming needed by wall plants. "greening up" buildings and houses therefore became a margin topic until the environmental movement arose.