10 Best High Nitrogen Fertilizer 2026 in the United States

The Maximum Green & Growth Fertilizer is a high-nitrogen liquid lawn food with a strong 28-0-0 ratio, meaning it delivers nitrogen only, which is great for promoting a lush, green lawn. Its unique blend combines 70% quick-release nitrogen for fast greening and 30% slow-release nitrogen to keep your lawn fed over time, reducing the need for frequent applications. This liquid formulation is easy to apply using a hose-end sprayer and covers a large area (up to 12,800 square feet), making it convenient for different lawn sizes. It works well on all common warm and cool-season grasses, including Bermuda, St. Augustine, Fescue, and Kentucky Bluegrass.

Manufactured in the USA by a company with industry experience, it carries a solid reputation reflected in positive customer reviews. However, it only contains nitrogen, so you will need to use other fertilizers if your lawn requires phosphorus or potassium. Also, being a synthetic fertilizer, it doesn’t offer the soil-enhancing benefits that organic options provide.

If you're looking for a straightforward, effective nitrogen boost to encourage vigorous growth and greener grass, this product is a good choice. For those seeking a more balanced or organic fertilizer, it may be necessary to look elsewhere or combine this product with other fertilizers.

The Burpee Organic Blood Meal Fertilizer is a high-nitrogen fertilizer, boasting a 12-0-0 formulation, making it an excellent choice for promoting vigorous growth in green garden vegetables and leafy greens like tomatoes, spinach, and broccoli. This fertilizer is particularly well-suited for organic gardening, being OMRI Listed for organic use, and it supports soil health by encouraging beneficial soil microorganisms.

Additionally, the blood meal serves as a natural pest deterrent, repelling animals such as deer, rabbits, and moles, which is a bonus for gardeners dealing with these issues. Users must carefully follow the application instructions to avoid over-fertilization, which can harm plants. While the product's form as a blood meal ensures a potent nitrogen boost, it might not be suitable for those seeking a balanced nutrient mix, as it lacks phosphorus and potassium.

Moreover, some users might find the smell of blood meal unpleasant during application. Despite these minor drawbacks, the product maintains its reliability and effectiveness for most gardeners seeking a robust organic nitrogen source.

CountryMax Urea Fertilizer is a synthetic, granular fertilizer with a high nitrogen content of 46%, making it very effective for quickly boosting plant growth and promoting a rich green color in lawns, gardens, crops, trees, and shrubs. Since it is a fast-release urea formula, it acts quickly to correct nitrogen deficiencies and stimulate rapid top growth. This makes it a great choice if you want fast results during the growing season.

The product comes in a large 50-pound bag, which offers good value and enough fertilizer for bigger garden or lawn areas. Its granular form is easy to spread evenly using common fertilizer spreaders, helping ensure consistent coverage. However, because it contains only nitrogen (no phosphorus or potassium), it might not be the best option if your plants need a more balanced nutrient mix. Also, as a synthetic fertilizer, it doesn’t offer the soil-building benefits of organic alternatives.

This fertilizer is well suited for gardeners or landscapers looking for a powerful nitrogen boost to green up their plants quickly and economically. Those seeking slow-release or multi-nutrient formulas may want to consider other options.