The answer to 'why is my landscape lighting erosion' is that landscape lighting erosion is often caused by improper installation, drainage issues, or soil instability in the area. Symptoms can include exposed cables, tilting or sinking light fixtures, and soil washing away around the lights.
Some common causes include poor soil compaction, heavy rainfall or irrigation runoff, and damage from landscaping equipment. To fix the problem, you may need to adjust the soil, install drainage solutions, or properly re-secure the lighting fixtures. In some cases, it's best to call a professional landscaper to assess the issue and make the necessary repairs.