The answer to how to care for retaining wall installation is to regularly inspect and maintain the wall. This includes checking for cracks, leaning, or other structural issues, and addressing them promptly. You should also clear any debris or vegetation that could interfere with the wall's stability or drainage.
It's important to clean the wall surface regularly to prevent the buildup of moss, mildew, or stains. You can use a mild detergent and a soft-bristle brush to gently scrub the wall. Avoid using harsh chemicals or power washers, as these can damage the wall materials.