The answer to 'landscape lighting brown patches' is that the most common causes are improper drainage, soil compaction, and pest damage. These issues can lead to brown or discolored patches around your landscape lighting fixtures. Symptoms include wilting plants, standing water, and visible pest activity.
To troubleshoot, first check the soil drainage around the fixtures. Ensure the ground slopes away from the lights and there are no low spots allowing water to pool. Next, aerate the soil to reduce compaction. You can also apply a layer of mulch to help retain moisture. If you suspect pests, inspect for signs like grubs or mole tunnels and treat the area accordingly. If the issue persists, it's best to call a professional landscaper to diagnose and resolve the underlying problem.