The answer to 'retaining wall disease' is that there are several common causes, symptoms, and solutions for retaining wall issues. Retaining wall disease can be caused by factors like poor drainage, soil erosion, freeze-thaw cycles, and improper construction. Symptoms may include cracks, bulges, leaning, or crumbling of the wall. Solutions can range from simple repairs to rebuilding the wall, depending on the severity of the problem.
When dealing with retaining wall issues, it's important to identify the root cause and address it properly. Smaller problems may be suitable for DIY fixes, but more serious structural issues often require the expertise of a professional landscaper or engineer to ensure the wall is repaired or rebuilt safely and effectively.