Like all living things, grass needs nutrients to remain healthy and grow. Fertilizers typically contain a combination of three key nutrients, essential to maintaining healthy, vigorous grass. These essential nutrients are nitrogen to stimulate growth, phosphorus to maintain healthy roots and potassium to promote plant health. The best time to apply fertilizers to the cool season grasses of Kentucky is during their peak growing seasons in the spring and fall. Give us a call if you feel your lawn could use an application of fertilizer to help it reach its full potential. Thomson Lawn Care also offers a yearly lawn care program of five applications that incorporate a spring and fall fertilization.