Lawns should be fertilized with commercial fertilizer four to five times during the growing season, with the first application of fertilizer in mid-April and the last in the fall. Alternatively, users can top dress lawns with organic compost in the spring and fall.
For a lawn to look its best and effectively fight off weeds, it requires feeding while it grows. A lawn requires the first application of fertilizer when the soil temperature reaches 55 degrees Fahrenheit, which is when the grass starts growing. The second feeding should take place approximately four weeks later. Subsequent feedings should occur at six- to eight-week intervals through October, and users should opt for an organic fertilizer for the third feeding.