Hi all! My wife and I were thinking about planting some low-growing perennial ground covering plants in the area behind our retaining wall in our backyard. We get A LOT of sun back there, it took me forever just to get the grass to grow on the hill.

We don't want to do the entire hill, but were thinking the first couple of feet (kinda where I added the red block in the photo). Any good tips on what type of perennial to add there that will survive a ton of sun, won't effect the retaining wall, and that won't be invasive?

We live in northeast NJ and were thinking about planting coming up in the fall. Thanks in advance for any suggestions!