8 Best High Nitrogen Lawn Fertilizers 2026 in the United States

Scotts Green Max Lawn Food is a high-nitrogen lawn fertilizer designed to promote quick greening of your lawn. Featuring a dual-action formula that includes an iron supplement, it promises visible results within just 3 days. This product contains 5% iron, which aids in enhancing the greening process efficiently. It can be applied to any grass type and is suitable for use in spring, summer, or fall, making it versatile across different seasons.

The granular form allows for easy application, and it covers up to 5,000 sq. ft., ensuring a broad reach for larger lawns. One significant benefit is that it guarantees not to stain surrounding surfaces like concrete or driveways when used as directed, which is often a concern with iron-containing products. Additionally, it's safe for re-entry immediately after application, so you don’t have to worry about keeping pets or children off the lawn for long periods.

Users looking for a fast-acting, easy-to-apply fertilizer with added iron for quick greening will find this product particularly beneficial.

Scotts Turf Builder Lawn Food appears to be a solid choice for anyone seeking a high-nitrogen lawn fertilizer. One significant advantage is its versatility, as it works on any grass type and can be applied to both wet and dry lawns. This flexibility makes it suitable for a variety of lawn care routines.

Additionally, the product is designed to feed and strengthen grass, promoting strong, deep roots and improving the lawn's ability to absorb water and nutrients. This can help protect your grass against future problems, making it a good option for maintaining a healthy lawn over time. The coverage is also notable, with a 12.5 lb. bag able to cover 5,000 sq. ft., making it economical for larger lawns as well.

The product is a powder, which may be less convenient to handle and apply compared to liquid fertilizers. Those with highly specific lawn care requirements or preferences might find it less tailored than other specialized fertilizers. Scotts Turf Builder Lawn Food is a versatile and effective high-nitrogen lawn fertilizer suitable for general lawn maintenance, especially for those with larger lawns and a variety of grass types.

The Maximum Green & Growth 28-0-0 liquid lawn fertilizer offers a high nitrogen content at 28%, making it particularly effective for promoting vibrant green color and dense turf growth. Its blend of 70% quick-release and 30% slow-release nitrogen provides both an immediate boost and sustained feeding, helping maintain lawn health between applications. This liquid formula is versatile, suitable for use on a wide variety of grass types including Bermuda, St. Augustine, and Kentucky Bluegrass, and can also be applied to garden plants and young trees. Being a liquid, it generally allows for easier and more uniform application compared to granular options. It is best used in spring and summer when grass actively grows and responds to nitrogen.

Because it has zero phosphorus and potassium (N-P-K 28-0-0), it focuses solely on nitrogen, so you may need to supplement with other fertilizers to balance soil nutrients based on your lawn’s specific needs. The 1-quart volume covers a modest area, so larger lawns might require multiple bottles. Produced in the USA by a company with turf industry experience, this fertilizer is ideal for anyone looking to quickly correct nitrogen deficiencies and boost lawn greenness, especially if already following a broader fertilizer program.