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10 Best High Nitrogen Fertilizer 2025 in the United States

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Our Top Picks

#1

Winner

Miracle-Gro Shake 'n Feed Extended Boost, Fertilizer for Plants, Feeds Up to 6 Months, 3 lbs.

Rating
9.8
Chosen by1,328
Formulation

Most important from
15966 reviews

Formulation
The container is clean and easy to use, no mixing required and not too heavy.

The Miracle-Gro Shake 'n Feed Extended Boost is a granular fertilizer known for its long-lasting feeding capability, providing nutrients to plants for up to six months. This makes it highly convenient, as it reduces the frequency of applications. It is versatile and can be used with a wide variety of plants, including flowers, vegetables, and container plants. Additionally, it works through mulch, making it an excellent choice for garden beds and areas with mulch coverings.

One of the strengths of this product is its ease of use; simply shake it over the desired area and water to activate the feeding process. A 3 lb. container covers up to 111 sq. ft., making it suitable for both small and medium-sized gardens.

It is important to note that this is a synthetic fertilizer, which might not be suitable for those looking for organic options. Additionally, while it includes essential nutrients for root development and plant growth, users seeking a high-nitrogen content specifically might need to check if the 5:5:10 ratio meets their specific needs. This product is ideal for gardeners looking for a low-maintenance, long-lasting solution to plant feeding.

Rating
9.8
Chosen by1,328
Formulation

Most important from
15966 reviews

Formulation
The container is clean and easy to use, no mixing required and not too heavy.
#2

Burpee Organic Blood Meal Fertilizer | Add to Potting Soil | Excellent Natural Source of Nitrogen | for Tomatoes, Spinach, Broccoli, Leafy Greens | 3 lb, 1-Pack

Rating
9.6
Nitrogen Content
Formulation

Most important from
19570 reviews

Nitrogen Content
Within days of applying, plants showed extra growth and new seedlings shot up with much more vigor.
Formulation
This is my go-to for general fertilizing. It mixes extremely well, is extra gentle on plants and is safe for backyard wildlife.

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.

Rating
9.6
Nitrogen Content
Formulation

Most important from
19570 reviews

Nitrogen Content
Within days of applying, plants showed extra growth and new seedlings shot up with much more vigor.
Formulation
This is my go-to for general fertilizing. It mixes extremely well, is extra gentle on plants and is safe for backyard wildlife.
#3

Maximum Green & Growth- High Nitrogen 28-0-0 NPK- Lawn Food Quality Liquid Fertilizer- Spring & Summer- Any Grass Type- Simple Lawn Solutions - Concentrated Quick & Slow Release Formula (1 Quart)

Rating
9.3
Nitrogen Content

Most important from
3601 reviews

Nitrogen Content
Packed with high nitrogen content, this fertilizer makes your grass pop like it just signed a contract with Hollywood.

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.

Rating
9.3
Nitrogen Content

Most important from
3601 reviews

Nitrogen Content
Packed with high nitrogen content, this fertilizer makes your grass pop like it just signed a contract with Hollywood.

Buying Guide for the Best High Nitrogen Fertilizer

Choosing the right high-nitrogen fertilizer is crucial for promoting healthy plant growth, especially for plants that require a lot of nitrogen like leafy greens and grasses. Nitrogen is a key nutrient that helps plants grow strong stems and lush foliage. When selecting a high-nitrogen fertilizer, it's important to understand the different specifications and how they can impact your plants. Here are some key specs to consider and how to navigate them.
Nitrogen ContentNitrogen content is the percentage of nitrogen in the fertilizer. This is important because nitrogen is essential for plant growth, particularly for the development of leaves and stems. Fertilizers with higher nitrogen content (e.g., 20% or more) are ideal for plants that need a lot of nitrogen, such as leafy vegetables and lawns. For general garden use, a balanced nitrogen content (e.g., 10-15%) is usually sufficient. Choose a fertilizer with the right nitrogen content based on the specific needs of your plants.
Release TypeRelease type refers to how quickly the nitrogen is made available to the plants. There are two main types: quick-release and slow-release. Quick-release fertilizers provide immediate nitrogen to plants, which is useful for a rapid boost in growth. Slow-release fertilizers gradually release nitrogen over time, which helps maintain steady growth and reduces the risk of nutrient burn. If you need a quick fix for your plants, go for quick-release. For long-term maintenance, slow-release is a better option.
FormulationFormulation indicates whether the fertilizer is in liquid, granular, or powder form. Liquid fertilizers are easy to apply and quickly absorbed by plants, making them ideal for immediate results. Granular fertilizers are spread on the soil and provide a slow, steady release of nutrients. Powder fertilizers can be mixed with water for application or sprinkled directly onto the soil. Choose the formulation based on your application preference and the needs of your plants.
Additional NutrientsSome high-nitrogen fertilizers also contain other essential nutrients like phosphorus and potassium. These additional nutrients can support overall plant health and growth. If your plants need a balanced diet, look for fertilizers that include these extra nutrients. However, if you are specifically targeting nitrogen deficiency, a fertilizer with a higher nitrogen ratio and fewer additional nutrients may be more effective.
Organic vs. SyntheticOrganic fertilizers are made from natural sources like compost, manure, or bone meal, and they improve soil health over time. Synthetic fertilizers are chemically manufactured and provide immediate nutrient availability. Organic fertilizers are better for long-term soil health and sustainability, while synthetic fertilizers are useful for quick results. Choose organic if you prefer environmentally friendly options and synthetic if you need fast-acting solutions.

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