10 Best High Nitrogen Fertilizer 2026 in the United States

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.

The Maximum Green & Growth High Nitrogen 28-0-0 NPK Liquid Fertilizer is designed to enhance lawn growth and color, making it an ideal choice for anyone looking to improve their grass health. With a high nitrogen content of 28%, it significantly supports the formation of chlorophyll, leading to a greener and more vigorous lawn. The fertilizer’s formulation includes both quick-release (70%) and slow-release (30%) nitrogen, ensuring immediate results and prolonged feeding between applications.

This dual-release mechanism is beneficial for consistent lawn maintenance and addressing nitrogen deficiencies effectively. The product is versatile, suitable for all types of grass, including Bermuda, St. Augustine, and Kentucky Bluegrass, and can be used on a variety of plants such as ornamentals, garden plants, and young trees. Its liquid form allows for easy application, and it can be integrated into existing fertilizer programs to enhance their effectiveness.

While the product is manufactured in the USA, the concentrated formula requires careful handling and precise measurement to avoid over-application. This product is synthetic, which may not appeal to those seeking organic gardening solutions. The Maximum Green & Growth High Nitrogen Fertilizer is excellent for quick greening and dense lawn development but should be used as part of a comprehensive lawn care program for the best results.

Espoma Organic All Season Lawn Food is a high-nitrogen fertilizer with a 9-0-0 analysis, which means it is specifically designed to provide a significant nitrogen boost to your lawn, aiding in achieving a deep green color. The product boasts long-lasting nitrogen release, making it suitable for both early and late spring, as well as fall applications. This gradual release ensures that nitrogen is steadily available to your lawn over time, reducing the risk of burning or leaching out of the soil.

It's also environmentally friendly, containing no sludges or toxic ingredients, and is approved for organic gardening. This makes it a great option for those who prefer organic products for their lawn care. The fertilizer is formulated to be used on a variety of grass types, including fescues, bluegrass, rye grass, St. Augustine, and zoysia, making it versatile for different lawn types. One bag covers up to 5,000 square feet, offering good coverage for medium to large lawns.

However, it's worth noting that the fertilizer does not contain phosphorus or potassium, which are also important nutrients for lawn health. Therefore, you might need to supplement with other fertilizers if your lawn requires these nutrients. Espoma Organic All Season Lawn Food is a solid choice for those seeking an organic, high-nitrogen fertilizer with slow-release properties, though it may require supplementation for a complete nutrient profile.