These walls are also usually meant to reduce the effects of erosion between layers, so they'll usually be made of materials that can withstand the wear and tear that comes with being exposed to the outdoor environment. In a humid climate, for instance, a wood retaining wall might not do very well, but a quality one made of stone will.
Once you've narrowed down the materials in your retaining walls to something that will work for the application you want to use it for, you can simply choose the one that will be most attractive as part of your landscape design. While it's not quite interior decorating, even stone and shale can give you a wide variety of decorative options for your retaining walls. It's even possible to mix and match within reason to get exactly the effect you want. You might still prefer to use wood for some smaller elements that are not quite so prone to erosion. Just be aware that the wood will need additional protection against the effects of humidity.
When you are ready to choose your retaining walls as part of a landscaping design, give Outdoor Architects Inc’s office in Ellicott City, MD and surrounding areas a call for a consultation and free quote. No retaining wall application is too big or small for our professionals. We can work with you to bring your project to a successful conclusion.