Hi andreas,

One of the problems (at least from what I think happened) was Organic Maps making a strange tagging decision. Instead of changing the "name"-tag it added "name:en" and put Plant That Plant in there. Which means that some maps will display the "wrong"/"old" name of "Ola & Ko".
Additionally, it seems, the shop is still "shop=butcher;deli" which seems to be wrong when it's a plant shop now. I would go for show=garden_centre.
If you do not know how to change the values using Organic Maps, you could either use OSM's web editor iD (osm.org -> Edit) or Me or Hidoo could possible change the tagging.

Kai