GF with panoramic photo

FRUSTRATING. I had to edit a panoramic photo taken from a drone. There are patches of land that I want to be filled with trees. I tried so many times entering different prompts. Being descriptive and very detailed. But GenFill still gives the same dumb result as if it is taking sample of what the current selection is and just trying to add weird stuff. But not trees.

I had generated more than 20x3 variations and nothing gave me the result I want. Such a waste of time.