bxl-forever
Even if you are free to use your time as you see fit, I think it is not really useful, even though a bit of green on this part of the map would be visually pleasing.

1) It serves very little purpose.  Ask yourself the question: will anyone start a query on the database to look for where to find a "perfume garden"?

2) Micromapping…

3) It must be verifiable.  The map from your link appears to be non-free and it is legally not allowed to copy from such maps.

4) Always check and never rely on websites, brochures, printed maps, etc. even when they look like coming from an "official" source.  Many maps and websites are full of incorrect or outdated information, not to mention copyright traps.  OSM is not meant as a data lake (or data swamp) but as a useful and accurate map of the world.

Have a nice day.