Fertilizing the soil is also important. For this you do need to know what type of soil you have. If you are not sure, you can bring in some of the soil to a garden center and the experts there will be able to provide you with the right fertilizer for your needs. You can also decide whether you want to use organic or chemical fertilizers, but whichever one you choose, you do have to follow the directions on the packaging. Using too much fertilizer can be harmful to the grass.