The answer to 'retaining wall installation has weeds' is that weeds growing in a retaining wall are a common issue caused by improper installation, poor drainage, or lack of ongoing maintenance. Weeds can undermine the structural integrity of the wall and create an unsightly appearance.
Some common symptoms include weeds growing in the cracks and crevices of the wall, moss or algae buildup, and the wall beginning to lean or bulge. Solutions include thoroughly clearing out existing weeds, improving drainage around the wall, and regularly inspecting and maintaining the wall to prevent future weed growth. For more complex issues or if the wall is starting to fail, it's best to call in a professional landscaper to assess and repair the wall properly.