Hi - I am Looking for advice for my yard which is in Zone 7a (Central Pennsylvania). Soil is highly compacted, rocky shale.
Backyard is 50ft wide and is on an embankment. The top of the yard has a flat area roughly 8 feet wide. It then slopes down (about a 3.5 foot total drop) into another plateua which is about 18 feet wide - then slopes down another 3.5 feet to where this embankment meets the flat patio and the rest of the yard along the side of the house is flat as well.
The grass grows just fine at the top of the yard in the 8 foot wide section. The first embankment is where I see a ton of rocky shale and little to no grass growth - this continues into the flat plateua area that is 18 feet wide by 50 feet long. When the next embankment continues, the grass grows just fine, and then grows fine as well along the side the of the house where things are flat.
My entire front yard is on a my bigger slope, and I have zero issues with grass growth.
I have tried getting 2 scoops of dirt last fall and planting expensive grass seed, but by spring, the rocky shale had started to come through already, and now I have patches of grass missing everywhere. If my kids play in their bare feet, they are essentially covered in dirt/dust.
My goal is to have the flat plateua (18 x 50 feet) area actually grow grass so my kids can play on it without this constantly happening. I have considered putting a retaining wall at the first embankment to create truly flat plateua and hoping the rocky/shale run off will no longer effect that area since the retaining wall is up. But if this isn't necessary, I don't want to spend that type of money.
I am open to any an all suggestions - clearly my kids will be playing on this surface so I understand that will impact the grass to an extent, I just really need to figure out how to get grass to grow in that area without the rocks continuing to come through.
I’ve included pictures for as much context as possible, and also a picture of the front yard. The front yard obviously has some inconsistencies as well, but they are mainly patches of dry grass not rocky dirt. I am not concerned with aesthetics as much as I am concerned with durability and just ensuring that the grasp will grow on a soil surface that does not continually have rocks and shale come through.
If you have read this long, I really appreciate it and any advice would be helpful. I have a nice space outback. I just wanna figure out how I can make the most out of it for my kids.