Hi,
I made a proposal for facade gardens some time back, see
https://wiki.openstreetmap.org/wiki/Proposed_features/Facade_garden
There was quite a bit of discussion here and on its talk page, but I never
really followed up on it.
Facade garden is really for tiny gardens adjacent to the front wall,
We were discussing this article earlier:
https://www.abc.net.au/news/2023-02-28/urban-nature-sydney-developers-incentives-rooftop-gardens-green/102030006
& I wondered if we even have a way of mapping wall gardens?
Turns out that yes we do (Of course! :-)): leisure=garden +
garden:type=green_wall,
