10 Best Fertilizer For Green Grass 2025 in the United States

The Scotts Turf Builder Rapid Grass Sun and Shade Mix is a combination of seed and fertilizer designed to promote quick and lush grass growth. One of its standout features is its ability to grow grass up to twice as fast as seed alone, provided it is applied correctly and maintained. This makes it particularly useful for large problem areas in your lawn or when establishing new grass, with a new lawn coverage of 2,395 sq. ft. and overseeding coverage of 8,000 sq. ft.

It is suitable for use in both spring and fall when temperatures are between 60°F and 80°F, ensuring flexibility in planting periods. The product is intended for outdoor use, specifically in areas with both sun and shade exposure, which adds to its versatility. However, it is important to note that the product's availability may be limited in certain states.

The 16-pound bag size is manageable for most users, and its application method is straightforward, primarily requiring watering post-application. This product would be most beneficial for homeowners looking to quickly and effectively address patchy lawns or establish new grass areas, especially those who appreciate the convenience of a combined seed and fertilizer mix.

The Scotts Turf Builder Starter Fertilizer is designed especially for new grass, making it a solid choice if you are planting seed, new sod, or plugs. It has a strong nutrient mix with an N-P-K ratio of 24-25-4, which means it provides plenty of nitrogen and phosphorus—both crucial for quick and healthy root and shoot development. This helps grass grow 70% thicker and 35% faster compared to unfed grass, which is a significant boost for new lawns.

The fertilizer comes in a powder form and covers up to 5,000 square feet, giving you enough product for a medium-sized lawn. It’s safe for all grass types, so you don’t have to worry about damaging your turf. Application is straightforward—just spread the powder evenly on soil when planting.

If you want a fertilizer focused on getting new grass started quickly and thickly, this product fits the bill nicely. However, if you need something tailored for ongoing lawn maintenance or for adjusting to specific soil conditions, you might need a different or complementary product.

Scotts Turf Builder Rapid Grass Tall Fescue Mix combines grass seed and fertilizer in one bag, designed to help you grow green grass faster—up to twice as fast as seed alone under good conditions. This mix is tailored for tall fescue grass, ideal if you want to repair large bare spots or start a new lawn. It works best when applied in spring or fall at temperatures between 60°F and 80°F. The 16-pound package covers about 1,760 sq. ft. for new lawns or up to 5,280 sq. ft. for overseeding, which is a decent coverage size for medium to large yards.

The fertilizer is formulated to provide nutrients that promote quick growth and greening. It’s a slow-release type, so the grass gets steady nourishment over time, avoiding a quick spike and drop in nutrients. Because it’s made for tall fescue, it’s well-suited for cooler-season lawns and works best in full sun. However, it’s not the best choice if your soil pH is very acidic or alkaline, or if you have a different type of grass needing a different nutrient balance.

Application is straightforward—spread and water, but timing is important to match the recommended temperature range. Users have noted its rapid greening effect, although results depend heavily on proper watering and lawn care practices. For those seeking a convenient all-in-one product to quickly establish or rejuvenate a tall fescue lawn, this mix offers a strong option during recommended seasons, while being specialized for certain grass types and conditions.