The answer to 'why is my retaining wall drainage problems' is that there are several common causes, including improper installation, poor soil conditions, and clogged drainage systems. Symptoms can include standing water, soil erosion, and structural damage to the wall. Solutions may involve improving the drainage, repairing or replacing the wall, and addressing any underlying soil issues.
If you're experiencing retaining wall drainage problems, it's important to identify and address the root cause. This may involve DIY solutions like clearing debris from drainage pipes or regrading the soil, but more complex issues may require the expertise of a professional landscaper or contractor.