Narrow Retaining Wall / Barrier - Input Sought (Video)
I'm in the process of digging holes for what will be 16 Italian Cypress trees. A good number of them will get planted along a strip of land about 3' wide, right near the property line (location of dilapidated fence). Not easily seen due to dirt over it, is the blacktop driveway surface... And that's the problem here. How to best keep the earth from coming down onto the driveway?
Given these somewhat tight dimensions, I really can't use those retaining wall locking block as they'd take-up to much space. Pressure-treated planks, 2x10's, with 4x4 posts? I know these eat-up hardware (metal) now though...
Anything thin, flexible, that can go up 8 to 10" above ground level? Concrete pavers, stepping stones, inverted maybe? Thanks for any input you might have.
Here is a link that might be useful: YouTube Vid for Retaining Wall / Barrier Feedback