Thin grass is often a sign that;
It is important to first diagnose the cause of the thinning lawn and proceed from there. Pest problems are usually the least common reason for a thin lawn, while improper fertilizing, watering or mowing are the most common reasons. Excessive traffic from children or pets is another common cause. Once the cause has been determined and treated, routine lawn management will thicken the grass back up. The process can be shortened if the thin areas are aerated and over-seeded with a good quality seed. For more information please see PlantTalk script 1509, Patchy lawn.