Did the designer say what provision she'd make for drainage at the bottom of the slope, or is that why she decided a retaining wall might be useful after all?
The soil on my property is eroding at the edge of the backyard which drops off. The slope downhill is pretty steep and rocky. I've got monstera deliciosa planted at the edge. Is this a pretty good plant to stabilise the ground with? I've also been tossing garden debris from mowing and trimming down there as well to try to fill it in.