Looking for some ideas about a low vertical timber retaining wall for the following issue.

I have a vegetable garden on the side of a hill in the back yard and is very visible from the street. It's about 25' wide by about 20' deep. I terraced it into 4, 25' x 4' beds last year and used 2x10's as retaining walls. As you can imagine, before the plants grow to cover it, it's pretty unsightly, especially the wall on the first (nearest the street) bed.

The garden it pretty much a square, and I was thinking of adding some curves to this first bed's wall and face it with a perennial herb garden and some other perennials to make it look better.

Here's the question. I was thinking about using vertical timbers with something tying them together (nylon, flexsteel...) and some plantings overhangning and in the wall. I'm thinking it would look like a larger version of what it sometimes used as a border for lanscaping beds. It might be holding a max of 2' of dirt, but probably more like 18' and 4' deep. Or, something that looks like the walls that hold up island golf greens like the 17th green at Sawgrass. Think this'll work? Got any better ideas? I have seen the landscape stone with the open spaces for plantings and have considered them because they might make a neat strawberry patch for my wife. Can't remember their name though.

I'm trying to stay away from stone because of the thickness of the wall and tilling issues, but not dead set against them. But please, I'm hoping this won't lead to landscape stone/real stone argument. Just looking for ideas and haven't seen this type of wall talked about much talked about much here.

The link below is one of the few that I have found. I am guessing I am using the wrong terminology.

Thanks

Here is a link that might be useful: vertical timber wall