How Much Fertilizer Should Be Applied to New Grass?

Wait Six Weeks

Wait six weeks before fertilizing new sods or plugs, according to the University of California. Fertilize seeded lawns four to six weeks after the seeds germinate. During this time, minimize traffic on the new lawn and water it frequently.

Apply Nitrogen Fertilizer After Six Weeks

After six weeks, apply a half pound of nitrogen fertilizer per 1,000 square feet of grass. Then follow fertilizing recommendations for your specific type of grass. According to the University of California, most mature lawns require approximately 4 lbs. of nitrogen fertilizer per 1,000 square feet.

Bottom Line

New grass should not be fertilized for six weeks. After six weeks, add a half pound of nitrogen fertilizer per 1,000 square feet of grass. Water deeply a few days before fertilizing and follow all package instructions carefully. To reduce your lawn's fertilizer needs, leave grass clippings on the lawn after mowing.

References

• Yard Care: Building a Lawn
• University of California: Practical Lawn Fertilization (PDF)
• University of California: Lawn Care for New Lawns
• University of Missouri Extension: Grass Clippings, Compost and Mulch