Keeping your lawn lush and green is not always as easy as it looks. Any number of problems, including moss, will affect the health of the grass negatively. The conditions that moss requires to thrive are opposite that of grass. You can get rid of moss and reinvigorate the lawn by reversing the soil conditions.
Rake the mossy area vigorously and remove as much as possible. If the ground is compacted, aerate the soil. The Clemson Extension Service said an inexpensive spading fork or manual sod- coring tool can aerate soil effectively. If the area is large, rent a power-driven core aerator from a lawn and garden center or hire a lawn care service to aerate the soil.
Reseed the bare area. Do this well after liming the area to prevent killing the young seedlings. Sow a generous amount of grass seed over the bare area. Cover the seeds with about 1/4 inch of loose soil; water regularly until the seedlings take root. If an area gets less than four hours of sun a day, grass is not likely to do well, so a shade tolerant ground cover might work better. Once the problem of compacted, acidic, nutrient poor soil is addressed, the lawn will be healthier. This coupled with more sun and less moisture should eliminate moss problems completely.