If there were only one tree in the entire park, it would make sense to add a tree, as a landmark, that would actually help the map reader. There are many trees in the park, like in a forest. The use of the area tool is sufficient. The addition of random trees does not make the map better, it just makes it cluttered. As for shade in Luxembourg... You don't need a tree on a map to find shade in Luxembourg, where there are trees galore, and where the sun only shines 90 days a year.

But if you want to follow my every change. Happy mapping.

1) Who is we?
2) Why French? We are in Luxembourg. I suggest "Saint-Joseph Kierch".