text: I've just been there yesterday. This is definitely not a forest, also not a remaining rest of a forest. A public green or a park would be more appropriate. There are some large bushes and single trees.
  
  See also google street view:
  
  https://www.google.de/maps/@50.0483916,8.5576478,3a,75y,9.4h,96.57t/data=!3m6!1e1!3m4!1sAVE2B_HI5R-jJbmy0o5OvQ!2e0!7i13312!8i6656!6m1!1e1
  
  However I'm not very experienced with OSM editing. I just want to mention my concerns.
  
  Best Boris 