Moss thrives in cool, moist and shady locations. It grows best when grass grows at its slowest. This allows it to invade the lawn and potentially take over if the conditions are favorable. Moss typically occurs in neglected lawns that aren't fertilized properly, have high abundance of shade and highly acidic soils. By bringing these conditions under control, you can allow your grass to flourish and successfully eradicate the moss from your lawn.
Fertilize your lawn with a lawn fertilizer rich in nitrogen. Read the packaging and apply the correct amount with your broadcast spreader. Late fall and early spring are the critical times to apply fertilizer to your lawn to encourage lush and thick grass.
Use a pH soil meter to check the pH of your soil. If your soil pH is below 6.0, apply lime at a rate of no more than 150 pounds per 1,000 square feet of yard.
Prune trees around your yard. Use pruning shears or a hand saw to remove the branches. By thinning out the trees, more light will get to your yard, and the moss won't be able to grow as well.
Avoid watering your lawn at night. The best time to water your lawn is in the early morning hours so that the grass and top of the soil have a chance to dry out before nightfall.
Rent a grass de-thatcher in early spring from your local home improvement store. De-thatch the lawn, and this will remove up to 75 percent of the moss on the lawn. With proper fertilization and watering techniques, the grass will then be able to spread into the area the moss once occupied.