Country: The Netherlands
If it is indeed Chamomile I'd like to harvest some of it for making a few teas. I also don't want to ruin the fun for others and I want to contribute to more of it growing in that area next year. So if anyone has some tips on responsible harvesting chamomile from a public space, I'd love to hear them. It doesn't look to me like it was put there on purpose, as it is growing in by a small park but between many other bushes.
Also, I just read that harvesting a flower from a public space is technically theft or poaching according to Dutch law (Art. 314). If the Royal Family owns the land it would be a felony according to someone in Quora, but I could not source that. However, it appears that responsible harvesting small amounts for own use is tolerated in practice if one is not abusing ๐
EDIT: Found a good video about harvesting Chamomile: https://www.youtube.com/watch?v=Ci1vPMh2fVM
Looks like some type of chamomile...
You should be fine harvesting the plant. Nobody's gonna care about something as small as that.
If harvesting the plant, bring some scissors and cut off the top third of the plant, leaving ample leaves at the bottoms for the plant to regenerate. Don't pull it up by the roots unless you're going to transplant it.