10 Best Nitrogen Lawn Fertilizer 2025 in the United States

Scotts Turf Builder Lawn Food is a versatile fertilizer suitable for all grass types, making it a convenient option for homeowners. One of its strengths is its ability to feed and strengthen grass, helping protect against future problems and improving the lawn’s ability to absorb water and nutrients, which is crucial for maintaining a healthy lawn.

The product covers a large area of up to 15,000 sq. ft., making it cost-effective for those with sizable lawns. The granule form allows for easy application on either wet or dry lawns, providing flexibility based on your lawn’s condition at the time of application. Another advantage is its universal compatibility with all grass types, which removes the guesswork for users who may not know their specific grass type.

Scotts Turf Builder Lawn Food is a solid choice for general lawn maintenance, especially for those seeking an easy-to-use and widely applicable fertilizer.

The Scotts Turf Builder Triple Action1 is a versatile nitrogen lawn fertilizer that also controls and prevents weeds. It stands out due to its three-in-one formula, which kills existing weeds, prevents the growth of crabgrass, and nourishes your lawn to promote thick, green grass. This product is particularly effective against common lawn weeds like dandelion, clover, and chickweed, although it won't kill existing crabgrass. It's suitable for a variety of grass types including Kentucky Bluegrass, Perennial Ryegrass, and Bermudagrass, making it a good option for diverse lawns.

Application is straightforward: spread it on a wet lawn and water it in after 24 hours. It's best used in early spring when dandelions are actively growing. A 33.94 lb. bag can cover up to 12,000 square feet, providing substantial coverage for large areas. The active ingredients, Pendimethalin, 2, 4-D, and Dicamba, help in weed control and lawn feeding.

One notable drawback is that it may not be as effective on lawns that already have crabgrass. Additionally, the product requires attention to timing for optimal results, particularly in early spring. Those with smaller lawns might find the 33.94 lb. bag to be more than they need. Scotts Turf Builder Triple Action1 is ideal for homeowners looking for a comprehensive lawn care solution that addresses weeds and fertilizes in a single application, especially if used in the right season and with the correct application method.

Scotts Turf Builder SummerGuard Lawn Food with Insect Control is a well-rounded product designed to nourish and protect your lawn during the summer months. With a nitrogen content of 20%, it provides sufficient nutrients to promote healthy grass growth. The granular form ensures a slow-release of nutrients, which is beneficial for maintaining steady growth and reducing the risk of burning the lawn.

One of its standout features is the integrated insect control, which helps manage a variety of common pests such as ants, armyworms, and ticks, making it a dual-purpose product. This can save time and effort for homeowners who would otherwise need separate products for fertilization and pest control. The application method is straightforward: apply to a dry lawn when insect activity is noted, which aligns well with its seasonal use during summer.

It is suitable for all grass types and covers a substantial area of 15,000 square feet, making it ideal for larger lawns. A minor drawback is that it may not be suitable for those who prefer liquid fertilizers or those who have specific soil conditions that require tailored solutions. Additionally, the 40.05 lbs. bag might be heavy for some users to handle. This product is best suited for homeowners looking for a comprehensive lawn care solution that addresses both feeding and pest control during the challenging summer season.