This area doesn't look quite right to me, but I can't find a photo that shows the configuration. I'm checking with our facilities folks to see if they have a site plan. It was overhauled a couple of years ago.
One major thing is that the structure that looks like steps is actually a ramp, so it shouldn't look like steps. The actual paving between the buildings is decorative pavers. And there are small trees in planters, which would help disguise it a bit.
INSIDE those planting beds is a combination of large rocks (geologic specimens) and more dense vegetation; is there a way to represent that?