The answer to 'why is my fence mud' is that there are a few common causes for a muddy fence, including poor drainage, soil erosion, and excessive moisture. Symptoms may include standing water, soft or squishy ground around the fence posts, and discoloration or damage to the fence materials.
To fix a muddy fence, you'll first need to identify the root cause. This may involve inspecting the soil, checking for any blockages or damage to drainage systems, and ensuring the ground around the fence is sloped properly to allow water to run off. In some cases, you may need to add gravel, sand, or other materials to improve drainage and stabilize the soil. If the issue is more severe, you may need to consult a professional landscaper or fencing contractor to properly address the problem.