[Tagging] Feature Proposal - RFC - landuse bush

[Jeroen Hoek]

There are a number of problems with the mapping of greenery in built-up
areas. Most of the time mappers use landuse=grass, natural=scrub, and
barrier=hedge, but landuse=grass is not a landuse, natural=scrub is not
that natural, and barrier=hedge mapped as an area has been broken ever
since this commit landed in Carto:

https://github.com/gravitystorm/openstreetmap-carto/issues/4200

So quite annoying on the whole, and any attempts to improve the
situation are stymied by the problem of rendering in Carto, which is
effectively the reference rendering style.

The problem with landuse=bush I see is that it doesn't really improve
much over natural=scrub. I do agree that it fits in better with
landuse=grass, but it just adds another non-landuse landuse.

I would really like to see a proposal with a set of tags for patches of
grass, shrubs, and hedge area that can be accepted by the community and
the Carto maintainers some day.

Personally, I would start with a subset of the relevant landcover=*
tags: https://taginfo.openstreetmap.org/keys/landcover#values

What I and apparently a number of other mappers do in the mean time is
tag patches of grass and bushes with landuse=grass + landcover=grass and
natural=scrub + landcover=scrub, respectively. This way we can signal
our support for the landcover tags while not breaking rendering for
everybody else, and highlight that we are tagging landcover, not landuse
or natural features.

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