Best Fertilizers for Growing Healthy New Grass 2025
Creating a lush, green lawn starts with choosing the best fertilizer for new grass. Fertilizers tailored for new lawns provide essential nutrients to support seed germination, root development, and early growth stages. Below is a detailed comparison of top fertilizers designed to help your grass grow thicker and greener quickly.
| Product | Brand | Key Features | Coverage |
|---|---|---|---|
| Scotts Turf Builder Starter Fertilizer for New Grass (15 lbs.) | Scotts | Grows grass 70% thicker, 35% quicker; 24-25-4 nutrient ratio | 5,000 sq. ft. |
| Scotts Turf Builder Starter Fertilizer for New Grass (42 lbs.) | Scotts | All-in-One Particles technology; ideal for sod and seed | 14,000 sq. ft. |
| Jonathan Green Veri-Green Starter Fertilizer | Jonathan Green | Rich in phosphorus for root growth; humates for nutrient exchange | 1,500 sq. ft. |
| Extreme Grass Growth Lawn Booster – Liquid Spray | Simple Lawn Solutions | Humic acid formula; liquid concentrate with nitrogen and phosphorus | 32 oz. spray |
| The Andersons Premium New Lawn Starter 20-27-5 | The Andersons | Balanced supply of NPK with micro-nutrients and iron | 5,000 sq. ft. |
Scotts Turf Builder Starter Fertilizer for New Grass, 15 lbs.
The Scotts Turf Builder Starter Fertilizer for New Grass is designed specifically for use when planting seed. Its 24-25-4 fertilizer ratio supports the developing lawn by delivering balanced nutrition. This product helps new grass grow up to 70% thicker and 35% quicker than unfed grass, improving seeding results and making it suitable for sod and grass plugs as well. With coverage of 5,000 square feet, it’s an ideal choice for small to medium-sized lawn projects.
Scotts Turf Builder Starter Fertilizer for New Grass, 42 lbs.
This larger bag of Scotts Turf Builder Starter Fertilizer covers up to 14,000 square feet. It incorporates exclusive All-in-One Particles technology, ensuring the ideal combination of nutrients in each granule. This feature helps new grass seed germinate, sod, plugs, or sprigs develop faster and thicker, on average 70% thicker and 35% quicker than unfed lawns. It can be applied whenever planting new grass or installing sod, making it versatile for various new lawn applications.
Jonathan Green Veri-Green Starter Fertilizer for Seeding & Sodding
The Jonathan Green Veri-Green 12-18-8 Starter Fertilizer emphasizes root development with a high phosphorus content, crucial for new grass seed and sod establishment. It provides essential nutrients and contains humates that improve nutrient availability and soil exchange processes. The formula supports the growth of dense, strong roots and feeds the lawn for up to two months, helping young grass thrive during the critical first growth stages for up to 1,500 square feet of lawn.
Extreme Grass Growth Lawn Booster- Liquid Spray Concentrated Starter Fertilizer
This liquid lawn booster by Simple Lawn Solutions features an advanced humic acid formula designed to stimulate vertical and lateral grass growth. It contains nitrogen and phosphorus, key nutrients needed for new lawns, in a commercial-grade concentrated spray. The product is suitable for all grass types, new sod, seeding, and lawn repair. The ready-to-use hose-end sprayer allows precise application to address nutrient deficiencies and promote rapid growth.
The Andersons Premium New Lawn Starter 20-27-5 Fertilizer
The Andersons Premium New Lawn Starter is formulated specifically for new sod and seeded lawns. Its balanced 20-27-5 NPK ratio is optimized to encourage vigorous seedling growth and sturdy root establishment. Additionally, it contains essential micro-nutrients and 1% iron for enhanced greening. This starter fertilizer covers up to 5,000 square feet and is designed to deliver early strength to young grass for long-term lawn health.
Buying Guide for Fertilizer for New Grass
Nutrient Composition (N-P-K Ratio)
Choosing fertilizer based on the nitrogen (N), phosphorus (P), and potassium (K) content is critical. New grass seed and sod require higher phosphorus levels to support root development, often reflected in the middle number of the N-P-K ratio. Nitrogen promotes leafy growth, while potassium strengthens roots and stress resistance.
Application Type and Convenience
Granular fertilizers like those from Scotts and The Andersons provide slow and steady nutrient release, covering larger areas comprehensively. Liquid fertilizers, such as Simple Lawn Solutions’ concentrated sprays, allow for quicker nutrient absorption and precise application but may require more frequent application.
Coverage Area and Lawn Size
Consider the size of your lawn when selecting fertilizer bag size or spray volume. Larger bags like the 42-pound Scotts product cover wide areas and are more economical for big projects. Smaller packages suit smaller lawns or spot treatment needs.
Additional Nutrients and Additives
Look for fertilizers with micronutrients like iron, which enhance greening in young grass, and additives like humates that improve nutrient uptake. Some products provide pre-emergent weed control combined with fertilizer to protect new grass from weed competition.
Compatibility with Grass Types and Seeding Methods
Ensure the fertilizer suits your grass variety and planting method whether it’s seed, sod, plugs, or sprigs. Some starter fertilizers, like Scotts Turf Builder, work well with various lawn installation types.
Environmental and Safety Considerations
Always follow recommended application rates and timing to minimize nutrient runoff and avoid harming the environment or new grass. Applying fertilizer during optimal temperature ranges ensures best results and reduces risk of lawn damage.