To keep your lawn green, growing and looking its best, a consistent program of fertilization is essential. Regular fertilization will lead to a thicker, healthier lawn that reduces erosion, filters pollutants, provides natural cooling and cleans the air. Plus, your lawn will be less likely to suffer from weed, insect and disease problems when it's fertilized on a regular basis. And perhaps best of all, your lawn will need less water when it gets the nutrients it needs throughout the year.