The answer to 'why is my fence erosion' is that fence erosion is typically caused by soil movement, water runoff, or improper installation. Symptoms may include leaning, sagging, or gaps between fence panels. Solutions can include repairing damaged posts, reinforcing the fence line, or regrading the soil to improve drainage.
Fence erosion is a common issue that often requires professional assessment and repair. While some minor fixes may be possible with DIY efforts, significant erosion or structural damage to the fence usually requires the expertise of a licensed landscaping contractor.