10 Best High Nitrogen Lawn Fertilizers 2026 in the United States

Scotts Green Max Lawn Food is a high-nitrogen fertilizer designed to quickly improve lawn greenness and health. Its nitrogen content is high (27% nitrogen), paired with very low phosphorus and potassium (N-P-K ratio of 27-0-2), which is ideal for encouraging lush grass growth without promoting excessive root or flower development. The fertilizer also includes 5% iron to deepen green color fast—visible results can show in about 3 days. This product uses a granule form that's easy to spread with standard lawn spreaders and is safe to use on all grass types in spring, summer, and fall.

One bag covers a large area (up to 10,000 sq. ft.), making it suitable for medium to large lawns. An added benefit is that it won’t stain concrete or driveways and allows immediate access to the lawn for people and pets after application, enhancing convenience and safety. However, this fertilizer does not specify if it has a slow-release formula, meaning nutrients might be absorbed quicker and may require more frequent applications to maintain results. Also, the near-zero phosphorus content means it’s best used on established lawns rather than new seedings that need phosphorus for root development.

If fast greening and easy use across a typical lawn are your priorities, Scotts Green Max is a solid choice. Keep in mind you may need to reapply during the season for sustained feeding, and it may not be the best option for newly planted lawns.

The Maximum Green & Growth Fertilizer by Simple Lawn Solutions is a liquid lawn food with a very high nitrogen content (28-0-0), designed to promote a thick, green, and healthy lawn. Its nitrogen is split between quick-release (70%) and slow-release (30%) forms, which means your grass will get an immediate boost plus steady feeding over time. This mix is good for fixing nitrogen deficiency fast while maintaining lawn health as the season progresses.

The liquid form is applied with a hose-end sprayer, covering a large area (up to 12,800 square feet), which makes application quick and convenient compared to granular fertilizers. It works on all common warm and cool-season grass types like Bermuda, Fescue, and Kentucky Bluegrass, making it versatile for various lawns in the US. It's mainly intended for use during spring and summer when grass is actively growing, so it fits well into seasonal lawn care routines.

One potential downside is that being a liquid, it requires a sprayer and careful dilution (1:128 ratio), which might not suit everyone. Also, it only contains nitrogen without phosphorus or potassium, so you might need additional products for balanced feeding depending on your soil. With reliable American manufacturing and positive customer feedback, this fertilizer is a solid choice if you want a fast-acting, high-nitrogen product that supports lush green growth across many grass types.

Scotts Turf Builder Lawn Food is a granulated fertilizer designed for all grass types, making it a versatile choice for most home lawns. Its N-P-K ratio is 32-0-4, meaning it has a very high nitrogen content, which is great for promoting lush, green growth and strengthening the roots. This strong nitrogen boost helps your grass absorb water and nutrients better, leading to a healthier lawn. The fertilizer is pesticide-free, which can be a plus for those concerned about chemicals.

It covers a large area—up to 15,000 square feet per 37.5-pound bag—so it’s suitable for medium to large lawns. You can apply it in spring, summer, or fall, and it works whether the grass is wet or dry, adding to the convenience. The product uses a quick-release nitrogen form, which means the feeding effect is immediate but may require repeat applications throughout the growing season to maintain results.

The lack of phosphorus (the middle number in the N-P-K ratio is zero) means it's not aimed at new lawn seedings that need phosphorus for root development. This fertilizer suits established lawns needing a strong nitrogen boost but may not be ideal for new lawns or those requiring a balanced nutrient mix. Its positive customer ratings suggest good user satisfaction, especially for maintaining healthy, green grass.