10 Best High Nitrogen Lawn Fertilizer 2025 in the United States

Scotts Green Max Lawn Food is a high-nitrogen lawn fertilizer designed to provide rapid greening and improvement of your lawn. With a dual-action formula that includes a 5% iron supplement, it promises deep greening in just three days, making it an excellent choice for homeowners looking for quick results. This fertilizer is suitable for use on any grass type during spring, summer, or fall.

The product's granule form allows for easy application and even distribution across your lawn, covering up to 5,000 sq. ft. per 16.67 lb. bag. Additionally, it is safe to re-enter the lawn immediately after application, and it won't stain surrounding concrete or surfaces if used as directed. Those seeking a reliable, fast-acting lawn fertilizer with added iron will likely find Scotts Green Max Lawn Food to be a valuable option.

Scotts Turf Builder Southern Lawn FoodFL is a specialized fertilizer designed for Florida lawns, suitable for any grass type. One of the key strengths of this product is its ability to feed your lawn for up to 3 months, enhancing its resilience against heat and drought, which is crucial for warm climates.

Covering an area of 5,000 sq. ft. per 14.06 lb bag, this fertilizer offers good coverage for medium to large lawns. The product is easy to apply; simply spread it on a dry lawn during the growing season. The convenience of its formulation and application method makes it user-friendly, even for those with limited gardening experience.

However, one notable drawback is that it is only available for purchase in Florida, limiting its accessibility for users in other regions. For Florida residents looking for a reliable and effective lawn fertilizer, Scotts Turf Builder Southern Lawn FoodFL is a solid choice, especially for those dealing with challenging weather conditions.

The Maximum Green & Growth High Nitrogen 28-0-0 Lawn Fertilizer is a strong candidate for anyone looking to boost their lawn's health with a high nitrogen content. The 28-0-0 NPK ratio means it focuses heavily on nitrogen, which is essential for vibrant, green grass. One of its standout features is the combination of quick and slow-release nitrogen; 70% of the nitrogen is quick-release for immediate benefits, while 30% is slow-release to maintain the lawn's nourishment between applications. This dual approach ensures both immediate and sustained growth, making it suitable for maintaining a lush lawn throughout the spring and summer seasons.

The product is versatile as it can be applied to various grass types, including Bermuda, St. Augustine, and Kentucky Bluegrass, among others. This makes it a convenient option for homeowners with different kinds of lawns. Additionally, it can also be used on garden plants, flowers, and young trees, which adds to its versatility. However, being a liquid formula, it requires careful application to avoid over-fertilization, which can harm plants. Also, the 1-quart size might not be sufficient for larger lawns, requiring multiple purchases and applications.

Manufactured in the USA by a family-owned business with extensive experience, this product combines quality with expertise. Ideal for those looking to quickly correct nitrogen deficiencies and maintain lawn vigor, this fertilizer is a reliable option. Just be mindful of the application rates to get the best results without causing any damage.