To remove moss from your lawn, raise the pH level of the grass by sprinkling it with alkaline lime, and aerate the lawn's soil to improve the circulation of air and promote drainage. Moss appears due to an excess of moisture, so decreasing watering time helps to eliminate it. If the moss persists, kill it with a mixture of dish soap and water or a chemical moss killer that includes ferrous sulphate.
Unlike many other plants, moss doesn't compete with lawn grass and doesn't harm it. Moss starts growing in soil that is free of other plants. This means that if moss is growing in the lawn, then the lawn is dying by itself and moss is simply taking the free space. It is important to find out what is causing the grass to die and treat the problem before getting rid of the moss.
Use a core aerator to create holes in the lawn and break up particularly compact sections of soil. If there are specific problem areas with standing water, dig a trench so the water drains out of the soil.
Don't water the grass according to a set schedule. Instead, check the grass regularly to see if it or the soil is drying out. Water the grass only when necessary to give pooled water time to dry up and prevent the soil from collecting any excess water.
To directly treat spots of moss, mix 2 to 4 ounces of standard dish soap with 1 gallon of water. Use a spray bottle to target the moss. Once all the moss is dead, rake it up to prevent any more from growing.