Best Nitrogen Fertilizer For Garden: Compare 10 Options

#1 · Best Overall

1. Cz Garden Supply Urea 46-0-0

• Form: Granules
• Weight: 0.1 milligrams

Best for: For versatile garden feeding.

Why it ranks #1: Its clearly stated 46-0-0 analysis and resealable 5-pound granule package suit gardeners seeking a concentrated nitrogen source for vegetables, flowers, and gardens.

A water-soluble 46-0-0 formula gives Cz Garden Supply Urea a clear role when a garden needs a concentrated nitrogen source. Its granules serve indoor and outdoor flowers, lawns, vegetables, fruit, and citrus trees, while the listing also names tie-dye and batik as uses for the product.

The 46-0-0 analysis and water-soluble formulation make this a high-nitrogen option for a range of garden settings, from vegetables and lawns to indoor flowers and citrus trees. Granules come in a heavy-duty resealable, easy-pour package, which helps with handling between uses. The supplied directions suggest applying to wet or dry soil and give a typical 4–6 week interval; follow the product directions for the area and application rather than treating that interval as universal.

Skip it if you need a liquid formula for measuring into a watering routine; TPS Nutrients High Nitrogen Vegetable Fertilizer is listed as liquid.

Choose this for a gardener seeking granular, water-soluble 46-0-0 nitrogen across several garden types, with tie-dye or batik as an additional listed use. Its 5-pound package suits buyers prepared to store fertilizer between applications.

Listed on Amazon as: Urea Fertilizer 46-0-0 Made in USA – 5LB Plant Food for Indoor/Outdoor Flowers & Gardens – Promotes Lush Growth – Lettuce, Green Lawns, Fruit, Vegetables, Citrus Trees, Tie Dye Granules Prills

#2 · Slow-Release Pick

2. Milorganite 6-4-0

• Form: Granules
• Weight: 5 lb

Best for: For slower lawn feeding.

Why it ranks #2: The 6-4-0 formula is described as slow-release and intended for lawns, flowers, and gardens, with guidance to apply every 8–10 weeks during grass season.

A slow-release 6-4-0 formula sets Milorganite apart for gardeners seeking nitrogen alongside phosphorus and potassium. Its all-purpose listing covers lawns, flowers, and gardens, while the product description highlights iron for deep green color and says the fertilizer contains virtually no salts.

The slow-release 6-4-0 analysis makes this a broader nutrient option than a straight nitrogen fertilizer, while the iron content is described as supporting deep, long-lasting green color without staining. The listing says the product contains virtually no salts and will not burn lawns, trees, shrubs, or plants, including in hot or dry conditions. A suggested grass-growing-season schedule is every 8–10 weeks. The granules suit buyers planning periodic feeding rather than frequent liquid applications.

Skip it if you specifically need a 46-0-0 nitrogen formula; Easy Peasy UREA Fertilizer lists that analysis in granular form.

This suits lawn and garden owners who want slow-release feeding, iron for green color, and nutrients beyond nitrogen. Its 6-4-0 profile is a different fit from concentrated urea, so match it to your desired nutrient balance.

Listed on Amazon as: Milorganite All-Purpose Eco-Friendly Slow-Release Nitrogen 6-4-0 Fertilizer, 5 Pound Bag – for Lawns, Flowers and Gardens

#3 · Organic Garden Pick

3. Burpee Organic Blood Meal

• Form: Granules
• Weight: 3 lb

Best for: For organic potting mixes.

Why it ranks #3: OMRI Listed blood meal provides a natural nitrogen source for vegetables including lettuce, kale, squash, and corn, in a 3-pound granule package.

OMRI Listed status for organic use is a key distinction of Burpee Organic Blood Meal Fertilizer, a granular nitrogen source for vegetables and flowers. The product is specifically suited to mixing with potting soil and names crops including tomatoes, spinach, broccoli, lettuce, kale, squash, and corn.

The blood meal ingredient supplies a natural nitrogen source, while the OMRI Listed status makes the product relevant to gardeners following organic gardening practices. Its directions identify mixing with potting soil, so it suits soil preparation or amendment rather than a liquid feeding routine. The listed crops include tomatoes and other fruiting plants as well as leafy vegetables, and the 3-pound package provides a defined amount for garden use. Handle with care and follow the safety directions.

Skip it if you prefer a fertilizer with stated square-foot coverage; True Organic Blood Meal lists coverage of 104 square feet.

Choose this for an organic gardener adding blood meal to potting soil or feeding listed vegetables such as tomatoes, spinach, and kale. Its granular format and handling guidance make it a soil-preparation choice, not a liquid feed.

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

#4 · Leafy Greens Pick

4. True Organic Blood Meal

• Form: Granules
• Weight: 3 lb

Best for: For heavy-feeding leafy crops.

Why it ranks #4: This 3-pound blood meal is described for heavy feeders such as corn, spinach, broccoli, and leafy greens, and the listing identifies organic inputs.

A 3-pound bag of organic-input blood meal gives True Organic a clearly defined role for nitrogen-hungry crops. The listing specifically names corn, spinach, broccoli, and leafy greens, connecting its high-nitrogen formula with rapid vegetative growth in heavy feeders rather than general-purpose garden feeding.

Blood meal is the named ingredient, and the product description links its high nitrogen to rapid vegetative growth in heavy-feeding plants such as corn, spinach, broccoli, and leafy greens. The 3-pound granules come with a stated coverage of 104 square feet, giving buyers a concrete scale for planning a garden application. True Organic also describes its plant foods as benefiting soil and increasing microbial activity. The listed safety information says not to ingest the product.

Skip it if you need a stated organic certification listing; Burpee Organic Blood Meal Fertilizer is identified as OMRI Listed.

This suits gardeners feeding heavy nitrogen users such as spinach, broccoli, corn, and leafy greens, especially when the 104-square-foot coverage matches the plot. Keep in mind the product is fertilizer, not a consumable ingredient.

Listed on Amazon as: True Organic Blood Meal – High-Nitrogen Organic Fertilizer for Rapid Vegetative Growth – 3lb Bag Covers 104 Sq. Ft.

#5 · Small-Garden Pick

5. Down To Earth Blood Meal 12-0-0

• Form: Powder
• Weight: 8.6 oz

Best for: For small organic gardens.

Why it ranks #5: Its 12-0-0 analysis and 0.5-pound size suit small gardens and containers; it is OMRI Listed, soil-applied, and intended for leafy growth.

A 0.5-pound package of OMRI Listed blood meal makes Down To Earth a compact organic nitrogen option for small gardens and containers. Its 12-0-0 analysis and focus on leafy growth give buyers a defined nutrient profile for heavy feeders such as corn, broccoli, and leafy greens.

The 12-0-0 analysis identifies this as a high-nitrogen fertilizer, and the listing connects that profile to early growth and correcting nitrogen deficiencies. Its dried blood meal is a soil amendment, not a water-soluble fertilizer; directions call for broadcasting or hand applying it, mixing it into soil, and watering it in. The small package suits limited areas, but the stated application guidance of 2–4 pounds per 100 square feet means it may not cover a large garden.

Skip it if you need a water-soluble nitrogen fertilizer; Cz Garden Supply Urea Fertilizer is listed as water soluble.

This fits an organic gardener with a small plot, container area, or targeted patch of nitrogen-hungry crops. Its 12-0-0 profile is clear, but the soil-mixing method and stated application rate matter when planning coverage.

Listed on Amazon as: Down To Earth All Natural Fertilizers Organic Blood Meal – 12-0-0, 0.5 lb

#6

6. The Grow Co Urea 46-0-0

• Form: Granules
• Weight: 5 lb

Best for: For greener mixed plantings.

Why it ranks #6: The 5-pound granular urea has a stated 46-0-0 analysis and is listed for grass, vegetables, fruits, and flowers, making it a versatile concentrated option.

A 46-0-0 nitrogen ratio is the defining feature of The Grow Co Urea Fertilizer, giving gardeners a concentrated option for encouraging leafy growth and greener color. The listing covers grass, vegetables, fruits, and flowers, so one product can serve a mixed garden rather than a single crop type.

The 46-0-0 urea formula is presented as a high-nitrogen supplement for plants showing nitrogen deficiency, connecting its nutrient profile to larger growth and greener leaves. The listed applications span grass, vegetables, fruits, and flowers, which makes it relevant to mixed plantings. Its granular form is a practical fit for soil application, while the 5-pound quantity gives gardeners a defined amount to handle and store. The supplied facts do not provide a specific application schedule.

Skip it if you want a stated feeding interval or application rate; Cz Garden Supply Urea Fertilizer lists a typical 4–6 week interval.

This suits gardeners seeking a granular, high-nitrogen fertilizer for a lawn alongside vegetables, fruit, or flowers. Choose it for its broad listed uses and green-growth emphasis, but be ready to consult its package directions for application amounts.

Listed on Amazon as: 5 lb. Urea Fertilizer 46-0-0, High Nitrogen Fertilizer for Plants, Ideal Plant Food Nitrogen for Grass, Vegetable, Fruits, and Flowers – Promotes Greener Plant Color and Vibrant, Lush Growth

#7

7. TPS Nutrients High Nitrogen Vegetable Fertilizer

• Form: Liquid

Best for: For leafy vegetable growth.

Why it ranks #7: This 8-ounce liquid is specifically described for garden vegetables, leafy greens, and herbs, with an emphasis on foliage and vegetative growth.

A liquid formula in an 8-ounce size makes TPS Nutrients High Nitrogen Vegetable Fertilizer a compact option for supporting leafy growth. Its listed targets include garden vegetables, leafy greens, and herbs, with a focus on early and vegetative development rather than a broad set of named garden uses.

The liquid form distinguishes this fertilizer from the granular options in this roundup and gives it a format suited to buyers who prefer liquid plant nutrition. Its emphasis on high nitrogen and vegetative stages connects the product to foliage development in leafy greens, herbs, and vegetables. The 8-ounce size is a modest package for a focused garden use. The supplied information does not state a concentration, dilution ratio, or application schedule, so those details should come from the product directions.

Skip it if you want a stated 46-0-0 analysis; The Grow Co 5 lb. Urea Fertilizer lists that ratio.

Pick this for a vegetable gardener who wants a liquid product focused on leafy and early vegetative growth in greens or herbs. Its 8-ounce size is a focused choice; the supplied details leave concentration and dilution unspecified.

Listed on Amazon as: High Nitrogen Vegetable Fertilizer – Promotes Lush Growth, 8 oz

#8

8. TPS Nutrients Nitrogen for Plants

• Form: Liquid
• Weight: 8 oz

Best for: For liquid garden nitrogen.

Why it ranks #8: The 8-ounce liquid is described for lawns, gardens, crops, vegetables, turf, and outdoor plants, though its listing does not provide a nitrogen analysis.

An 8-ounce liquid format is the practical distinction of TPS Nutrients Nitrogen for Plants, which supplies nitrogen support across lawns, gardens, crops, vegetables, turf, and outdoor plants. Its stated emphasis is green leaves and steady development, giving it a broad-use role without a listed nitrogen analysis.

The liquid form offers an alternative to granular fertilizers for gardeners who prefer liquid plant nutrition, while the 8-ounce package provides a defined quantity for handling and storage. The listing names vegetables, turf, lawns, crops, and outdoor plants, so it can address more than one garden setting. Its focus on nitrogen, green leaves, and steady development is clear, but the supplied product details do not give a concentration, dilution ratio, or application schedule.

Skip it if you want a stated nutrient analysis; RAW Nitrogen lists 20% ammonium nitrogen in a water-soluble powder.

Choose this liquid nitrogen supplement if you want one listed for lawn, turf, crops, vegetables, and outdoor plants. It fits buyers focused on green foliage and steady growth, but its supplied details do not specify concentration or dilution.

Listed on Amazon as: Nitrogen for Plants – Liquid Fertilizer for Deep Green Growth, 8 oz

#9

9. RAW Nitrogen

• Form: Powder
• Weight: 2.08 oz

Best for: For targeted feeding programs.

Why it ranks #9: Its water-soluble powder provides 20% ammonium nitrogen and supports leaf and stem development, but the listing gives less garden-specific crop detail.

A water-soluble powder with 20% ammonium nitrogen gives RAW Nitrogen a specific nutrient profile for vegetative plant development. It is presented as a way to support leaf and stem growth and to integrate into an existing feeding program, making it a targeted option for gardeners managing plant nutrition.

The stated 20% ammonium nitrogen content gives buyers a named nutrient form to consider when adding nitrogen to a feeding program. Because the powder is water-soluble, it can be integrated into a soluble feeding routine rather than handled as a dry soil meal. The product is positioned for vegetative growth, particularly leaf and stem development. Its 2-ounce package is a small quantity for targeted use, so it fits a narrower feeding role better than a large-area fertilizer application.

Skip it if you need an organic blood meal for soil mixing; Burpee Organic Blood Meal Fertilizer is a listed granular option.

This is a fit for growers who want a small, water-soluble nitrogen product to incorporate into a vegetative feeding program. Consider its 2-ounce quantity when deciding whether it suits your garden’s scale and feeding routine.

Listed on Amazon as: RAW Nitrogen Fertilizer – Water Soluble, Fertilizer for Vegetables, 2 oz

#10

10. Easy Peasy Urea 46-0-0

• Form: Granules

Best for: For concentrated granular nitrogen.

Why it ranks #10: This granular 46-0-0 urea supports lawns, landscapes, and garden areas, but its listed 50-pound model designation is less suited to many small garden needs.

A 46-0-0 urea analysis gives Easy Peasy UREA Fertilizer a concentrated nitrogen profile for lawns, landscapes, and garden areas. Its granular form supports spreading over soil, and the listing emphasizes active growth, leaf development, and consistent green color across a range of planting settings.

The 46-0-0 analysis connects this granular urea product to nitrogen-focused feeding, while its listed uses span lawns, landscapes, and garden areas. The directions say to measure according to the size of the area or plant needs and spread evenly over soil, which gives a practical application workflow but leaves the amount to package guidance. Granules suit spreading over soil, while the supplied listing does not specify a package weight for planning quantity or storage.

Skip it if you need a stated package size and square-foot coverage; True Organic Blood Meal lists both a 3-pound bag and 104-square-foot coverage.

Select this for a gardener seeking granular 46-0-0 nitrogen across lawn, landscape, or garden areas. Its spreading directions are straightforward, but buyers who plan applications by package quantity will need the package information.

Listed on Amazon as: UREA Fertilizer 46-0-0 | nitrogen granular Fertilizer | NITROGEN Plant Food