The answer to 'how to maintain fence' is to regularly inspect, clean, and repair your fence to keep it in good condition. This includes checking for any loose, damaged, or rotting boards, tightening hardware, and removing debris or vegetation that could cause damage. You should also apply a fresh coat of paint or sealant every 3-5 years to protect the wood from weathering.
Proper fence maintenance is important for both the appearance and structural integrity of your property. Neglecting fence upkeep can lead to costly repairs down the line, so it's best to stay on top of it with regular maintenance. If you notice any major issues like significant damage or instability, it's best to consult a professional landscaping or fencing contractor for assistance.