The answer to 'landscape lighting erosion' is that landscape lighting can sometimes cause soil erosion around the fixtures. This is often due to improper installation, drainage issues, or the weight of the fixtures themselves.
Symptoms of landscape lighting erosion include visible ruts, exposed roots, or pooling water around the fixtures. Solutions can include adjusting the placement of the lights, improving drainage, or using erosion-resistant materials like gravel or mulch around the base of the fixtures. In some cases, it may be necessary to call a professional landscaper to properly address the issue.