10 Best Fertilizer with High Nitrogen for Healthier Plants in 2026

The Grow Co 5 lb Urea Fertilizer 46-0-0 is a high-nitrogen supplement designed to address nitrogen deficiency in plants. It's ideal for gardeners and homeowners who want to boost the green color and growth of their grass, vegetables, fruits, and flowers. This product is especially useful for those with nitrogen-poor soil or for giving plants a quick growth spurt in spring or after a stress period.

The standout feature is its 46-0-0 NPK ratio, which provides a concentrated dose of nitrogen. Users report faster, lusher growth and a noticeable improvement in green color within days. The granules are highly soluble and absorb quickly, offering rapid nourishment. For established turf, the recommended application is half a pound per 1,000 square feet, making it easy to use for lawns. For garden plants, a simple teaspoon near the drip line does the trick.

The product comes in a sturdy 5-pound bag with clear instructions on the back. The granules are uniform and dissolve well without clumping, which helps prevent uneven application. While the simplicity of the formula is a plus for targeted nitrogen supplementation, it does mean you need to ensure other nutrients are provided separately for balanced plant health. As with any high-nitrogen fertilizer, there is a risk of burning plants if overapplied, so careful measuring is essential.

Customer feedback highlights the product's effectiveness and value. Many users appreciate the fast shipping and noticeable results. Some note that while it works well for leafy growth, it shouldn't be relied upon as a complete fertilizer. For best results, pair this with a balanced fertilizer that includes phosphorus and potassium.

Overall, The Grow Co Urea Fertilizer 46-0-0 is a solid choice for anyone needing a nitrogen boost. It delivers on its promise of greener, more vigorous growth and is easy to apply. Just remember to follow the instructions precisely and supplement with other nutrients as needed.

The EasyPeasyPlants Urea Fertilizer 46-0-0 is a high-nitrogen granular fertilizer designed to give lawns, gardens, and ornamental plants a quick green boost. With a 46-0-0 N-P-K ratio, it delivers a concentrated dose of nitrogen without any phosphorus or potassium, making it ideal for targeted feeding when soil tests show a nitrogen deficiency. This product is best suited for small to medium-sized lawns, flower beds, and container gardeners who need a reliable source of fast-acting nitrogen.

Standout features include its purity and speed. Users consistently report visible greening within two days of application, thanks to the high concentration of urea nitrogen that plants can absorb rapidly. The granules are easy to apply using a standard broadcast spreader, or they can be dissolved in water for spot treatment with a sprayer. This flexibility makes it useful for both broad coverage and precise feeding around trees and shrubs.

However, the product has some notable drawbacks. The 5-pound bag is relatively small, and at its price point, it's not the most economical choice for large lawns. Several reviews highlight that comparable fertilizer from local farm stores is cheaper per pound, though those often come in 40-pound bags. Additionally, the lack of clear application instructions beyond basic ratios can lead to overapplication and plant burn, especially in potted plants or during hot, dry weather. A few users mentioned burning their plants when they didn't dilute enough or apply carefully.

Despite these cons, the product delivers on its promise of rapid greening. The nitrogen-only formulation is a plus for gardeners who want to avoid adding excess phosphorus or potassium to the soil. For small-scale use, occasional spot treatments, or as a supplement to a larger fertilizer program, EasyPeasyPlants Urea Fertilizer is an effective tool. Just be sure to follow standard urea application guidelines and water it in well to prevent leaf scorch.

Overall, this fertilizer earns a solid recommendation for its intended audience: homeowners with modest lawns, patio gardeners, and anyone needing a quick nitrogen fix without committing to a huge bag. For larger properties, it's worth comparing cost per pound against local bulk options. If you need precise, fast nitrogen and don't mind the smaller quantity, this product works as advertised.

True Organic Blood Meal is a high-nitrogen, organic fertilizer designed for gardeners who want lush, rapid growth from their heavy-feeding plants. It is ideal for vegetables like corn, spinach, broccoli, and leafy greens, as well as other nitrogen-hungry crops. The product comes in a 3lb bag that covers up to 104 square feet, making it a practical choice for medium-sized gardens.

What sets this fertilizer apart is its natural nitrogen source, which promotes vigorous foliage growth without the use of synthetic chemicals. Users report impressive results, with many noting a significant boost in plant health and yield after just one application. The granules are easy to spread and have a low dust factor, and many appreciate the minimal odor compared to other blood meal products. It can be applied twice a year (spring and fall) for consistent nutrient supply.

The packaging is straightforward and includes clear application instructions. The fertilizer is made from sustainable organic inputs and is manufactured in the USA, which appeals to eco-conscious buyers. It works well for both in-ground gardens and container plants, offering flexibility for different gardening setups. Some users also mention that it helps deter rabbits and other pests, adding an extra layer of benefit.

There are a few considerations to keep in mind. While the smell is relatively mild, it is still a blood meal product, so it may be noticeable if you are sensitive to odors. Over-fertilizing can occur if not measured correctly, potentially leading to leaf burn. Also, if the granules are left on the soil surface, they may attract dogs or wildlife, so light incorporation is recommended.

Overall, True Organic Blood Meal delivers on its promise of boosting nitrogen levels for faster, healthier plant growth. It is a reliable, organic choice for gardeners who prioritize natural methods and want effective results. Given its high rating and positive user feedback, it is a solid value for anyone looking to give their heavy feeders a strong start.

Brand: True Organic

Model Number: R0008

Item Form: Granules

Unit Count: 48 Ounces (3 lb)

Coverage: 104 sq ft (3 lb bag)

Specific Uses: Agriculture, Gardening

Target Species: Plants

Included Components: 100% Made in the USA with Organic Inputs

Warranty: Manufacturer warranty included

The Simple Lawn Solutions Maximum Green & Growth Fertilizer is a 28-0-0 liquid concentrate designed to deliver a powerful nitrogen boost to your lawn. This product is ideal for homeowners looking to restore a deep green color and encourage rapid growth, especially after winter dormancy or a nitrogen deficiency. It comes with a convenient attached sprayer that automatically mixes the right amount of fertilizer with water, covering up to 3,200 square feet per bottle.

What sets this fertilizer apart is its dual release system: 70% of the nitrogen is quick-release for an immediate greening effect, while 30% is slow-release to keep feeding your lawn between applications. This means you'll see results in days, but the feeding lasts for weeks. The formula works on all common grass types, including Bermuda, St. Augustine, Zoysia, Fescue, and Kentucky Bluegrass, making it a versatile choice for most lawns.

In terms of ease of use, the attached sprayer is a big time-saver. Simply attach the bottle to your garden hose and spray. No measuring, no mixing, no cleanup. The sprayer applies a consistent ratio, so you don't have to worry about over- or under-fertilizing. However, the sprayer is made of plastic and may not be as robust as a standalone unit, but it works well for occasional use.

One limitation is that this product is strictly a nitrogen source lacking phosphorus and potassium, which are essential for root development and overall plant health. If your lawn needs a complete feed, you'll need to supplement with a balanced fertilizer. Also, because it's high in nitrogen, there's a risk of burning the grass if you apply too much or use it during hot, dry weather. Always follow the recommended application rates.

Overall, the Simple Lawn Solutions 28-0-0 is a solid choice for a quick green-up and growth boost. It's especially effective for correcting yellowing lawns or jump-starting spring growth. If you're looking for an easy, no-mess way to give your lawn a nitrogen rich feed, this product delivers good results at a reasonable price.

TPS NUTRIENTS High Nitrogen Fertilizer is a liquid plant food formulated to support rapid green growth and strong vegetative development. With a high nitrogen content, it targets the needs of plants during their leafy growth phase, making it a solid option for gardeners who want to boost foliage density and color. This 8 oz bottle is designed for easy use on a variety of plants, from indoor houseplants to outdoor vegetables and lawns.

The standout feature here is the nitrogen-rich formula, which encourages deep green leaves and robust stems. Nitrogen is a key macronutrient for chlorophyll production, so plants treated with this fertilizer often show noticeable improvements in leaf size and color within days. The liquid form allows for quick uptake, and the simple measuring instructions make it accessible even for beginners. Whether you're nursing a sad pothos back to health or giving your tomato seedlings a boost, this product delivers targeted nutrition without extra additives.

In terms of design, the bottle is straightforward - a compact 8 oz container with a clear label and easy-pour spout. It's made in the USA, which adds a layer of trust for buyers concerned about manufacturing standards. The product is concentrated, so a little goes a long way; you'll need to dilute it according to the instructions for different plant types. This makes the small bottle more economical than it first appears, though large-scale gardeners may wish for a bigger size.

One honest drawback is that this fertilizer is specialized for vegetative growth. If you're growing flowering plants or fruiting crops, you'll need a different formula with higher phosphorus and potassium. The lack of customer reviews also means you're relying on the brand's description, though TPS NUTRIENTS has a decent reputation in the plant care space. Additionally, the 8 oz size may not be ideal for extensive lawns or large gardens without frequent repurchases.

Overall, TPS NUTRIENTS High Nitrogen Fertilizer is a reliable choice for anyone looking to promote lush, green growth in their plants. It's simple to use, effective for its intended purpose, and made with quality ingredients. If you're focused on leafy vegetables, houseplants, or lawn greening, this liquid plant food is worth considering. Just be aware of its limitations for flowering stages and the small bottle size.

CountryMax Urea Fertilizer 46-0-0 is a professional-grade granular fertilizer designed for anyone who wants a fast, noticeable green-up in their lawn or garden. With a 46% nitrogen content, this product is ideal for correcting nitrogen deficiencies quickly, making it a go-to choice for homeowners, landscapers, and growers who need reliable results during the active growing season.

The standout feature here is the high nitrogen concentration. It promotes rapid plant growth, lush foliage, and that deep green color that makes a lawn look its best. The granules are uniform and spread easily with broadcast or drop spreaders, so you get consistent coverage without much fuss. In real-world use, you can expect to see results within days, especially if you water it in after application. It's versatile too, working well on lawns, gardens, crops, trees, shrubs, and ornamental plants.

Build quality is solid for a fertilizer. The 50 lb bag is sturdy and resealable, which helps keep the granules dry and free-flowing. The product is straightforward to use, but you do need to be careful with application rates. Too much can burn your plants, so follow the instructions closely. It's also worth noting that this is a straight nitrogen fertilizer, so for balanced growth, you may need to supplement with other nutrients depending on your soil's needs.

On the downside, the high nitrogen content means it's not a one-size-fits-all solution. If you're growing nitrogen-sensitive plants or have already rich soil, you'll want to test first. Also, because it's granular, it works best when watered in, which might be an extra step for some. But for the price, the 50 lb bag offers excellent coverage and value, especially for larger areas.

Overall, CountryMax Urea Fertilizer 46-0-0 is a solid choice for anyone needing a quick, effective nitrogen boost. It's easy to apply, versatile, and delivers on its promise of fast green-up. Just be mindful of application rates and your specific plant needs. If you're after a reliable high-nitrogen fertilizer, this one is worth considering.

The TPS Nutrients High Nitrogen Fertilizer for Vegetables is a liquid concentrate designed to boost leafy growth and stem strength in garden crops. If you grow leafy greens, herbs, or any vegetable that benefits from a strong start, this formula is worth considering. It's a straightforward product aimed at home gardeners who want to increase the productivity of their vegetable patch.

The standout feature here is the high nitrogen content, which is ideal for the vegetative stage of plant growth. Nitrogen encourages lush, green foliage and helps build sturdy stems. That means your lettuce, spinach, kale, or even tomato plants can develop a strong foundation early on. The liquid form is easy to mix and apply with a watering can or sprayer. It also absorbs quickly through roots and leaves, so plants get the nutrients without delay.

Design-wise, the bottle is simple and functional: a 32 oz container with clear labeling and dosage instructions. Being made in the USA is a plus for many buyers who prioritize domestic manufacturing. The formula is concentrated, so a little goes a long way. However, with high nitrogen, you have to be careful not to overdo it because too much can burn roots or create excessive foliage at the expense of fruit production. It's best to follow the recommended rates and adjust based on your plant's response.

A potential drawback is the lack of user reviews, so real-world feedback on long-term results isn't available yet. Also, the 32 oz size might not be sufficient for very large gardens; you may need to buy multiple bottles. But for the average backyard vegetable grower, this is a solid, targeted fertilizer that does exactly what it claims: support leafy growth and strong stems.

Verdict: If you're looking for a high-nitrogen liquid fertilizer made for vegetables, the TPS Nutrients product is a good choice. It's easy to use, made in the USA, and formulated to deliver results during the vegetative phase. Just be mindful of dosage and start with a small area to see how your plants respond.

RAW Nitrogen Fertilizer is a straightforward, water-soluble plant food designed to address one of the most common nutrient problems: nitrogen deficiency. If your plants have yellowing lower leaves, slow growth, or pale foliage during the vegetative stage, this product delivers a quick, concentrated dose of nitrogen to get them back on track. It's especially suited for indoor plant enthusiasts, hydroponic growers, and vegetable gardeners who want a no-fuss supplement during the early growth phase.

The standout feature here is its simplicity. You get a fine, dry powder that dissolves almost instantly in water, making it easy to apply with a watering can, sprayer, or in a hydroponic reservoir. Because it targets nitrogen specifically, you can adjust your feeding schedule without throwing off other nutrients. The versatility is a big plus -- it works in soil, coco coir, rockwool, and other media, so you can use it across different grow systems. For plants that need a quick green-up, results are often visible within a few days.

Build quality is minimal but functional. The product comes in a resealable foil bag that keeps the powder dry and fresh. There are no measuring scoops included, so you'll need a small scale or measuring spoon for accuracy. The 2-ounce size is convenient for small-scale growers or those experimenting with nitrogen supplementation, but serious gardeners with larger operations might find themselves ordering multiple bags.

One honest drawback is that this is not a complete fertilizer. It's pure nitrogen, so you'll still need to provide phosphorus, potassium, and micronutrients for balanced growth. Also, because it's highly concentrated, there's a real risk of overdoing it -- too much can burn roots or cause excessive leafy growth at the expense of flowers or fruit. Follow the mixing instructions carefully and start with a lower dose if you're unsure.

Overall, RAW Nitrogen Fertilizer is a practical, effective solution for growers who need a focused nitrogen boost. It delivers on its promise without gimmicks, and the price makes it an easy addition to any nutrient arsenal. If you're dealing with nitrogen deficiency and want a simple fix, this is a great option.

TPS NUTRIENTS Urea Fertilizer is a straight nitrogen solution designed for gardeners who want to push their plants through a vigorous vegetative phase. With a 15-0-0 NPK ratio, it's all about feeding that lush green growth. This liquid concentrate is perfect for leafy greens, lawns, ornamentals, or any crop you want to see take off fast. If you're in the middle of the growing season and your plants are looking pale or stunted, this product gives them the nitrogen jolt they need.

The standout feature here is the delivery speed. Because it's a liquid urea formulation, plants can take it up through both roots and leaves almost immediately. Many users see a deeper green color within a few days, especially when applied as a foliar spray. It's also incredibly easy to mix and use, no special equipment or complicated measuring. Just follow the dilution rates for your specific plants and you're good to go.

Build quality is solid for a simple fertilizer. The bottle is sturdy with a clear label showing instructions and NPK details. Being made in the USA adds a layer of trust, especially if you're wary of unknown manufacturers. The 8 ounce size is practical for small gardens or for testing the product before buying a larger quantity. It stores well and doesn't have an overpowering odor.

But there are a couple of things to keep in mind. Urea based fertilizers can lose nitrogen to the air if left on the soil surface without watering in. So you'll want to incorporate it lightly or water afterwards. Also, this is strictly a nitrogen booster. It won't provide phosphorus or potassium, so it's not a complete feed. Use it during vegetative growth only and switch to a balanced fertilizer when it's time for flowers or fruit. Overdoing it can lead to lots of leaves but fewer blooms.

Overall, this is a straightforward, effective product for its intended purpose. If you need a fast acting nitrogen boost for leafy growth, TPS NUTRIENTS delivers. It's affordable, easy to use, and gets the job done without fuss. Just be mindful of application timing and you'll see great results.

The Simple Lawn Solutions Maximum Green & Growth 28-0-0 is a high-nitrogen liquid fertilizer designed to give your lawn a powerful green-up and sustained growth through spring and summer. This product is perfect for homeowners who want a thick, vibrant lawn without the hassle of granular applications. Its 28-0-0 analysis means it's packed with nitrogen, the key nutrient for chlorophyll production and that deep green color you're after.

What sets this fertilizer apart is its dual-release nitrogen blend. 70 percent is quick-release for an immediate green boost, while 30 percent is slow-release to keep feeding your lawn between applications. In real-world use, that means you'll see results within days, and the effects last for weeks. The concentrated formula covers up to 12,800 square feet per gallon, making it a cost-effective choice for medium to large lawns.

The liquid form is easy to apply with a hose-end sprayer, and it works on all common grass types from Bermuda and St. Augustine to fescue and Kentucky bluegrass. The manufacturer, Simple Lawn Solutions, is a family-owned business with 25 years of commercial turf experience, so the quality and formulation are backed by real industry know-how.

On the downside, high-nitrogen fertilizers can burn your lawn if overapplied, so you need to follow the mixing and application rates carefully. Also, because it's a single-nutrient product, you'll still need to supply phosphorus and potassium separately for a complete lawn health plan. Some users may prefer granular options for convenience, but the liquid sprayer method gives you precise coverage.

Overall, the Simple Lawn Solutions 28-0-0 is a solid choice for anyone looking to revive a tired lawn or maintain vibrant growth during the active growing season. It delivers fast results, lasts between feedings, and covers plenty of ground. Just pair it with a balanced fertilizer program for the best long-term health.

Size: 1 Gallon

Weight: 11.11 Pounds

Product Group: Lawn & Patio

Binding: Unknown Binding

NPK Ratio: 28-0-0

Coverage: Up to 12,800 sq ft per gallon with hose-end sprayer

Grass Types: All warm and cool season grasses including Bermuda, St. Augustine, Zoysia, Bahia, Fescue, Ryegrass, Kentucky Bluegrass