The fenced-in area there looks ideal for adding a few Berry trees:
It would be best as an isolated map accessible via door warp from the flower shop, since even though a public park would make sense and might work BG-tile-wise, Goldenrod City already uses a lot of object events.

The fenced-in area there looks ideal for adding a few Berry trees:
It would be best as an isolated map accessible via door warp from the flower shop, since even though a public park would make sense and might work BG-tile-wise, Goldenrod City already uses a lot of object events.