10 Best High Nitrogen Liquid Fertilizer Options for a Greener Lawn in 2026

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.

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.

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.

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

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.

TPS NUTRIENTS has released a high-nitrogen liquid fertilizer aimed squarely at vegetable gardeners who want to push their leafy greens, herbs, and other crops into vigorous growth. This 1-gallon concentrate is designed to be mixed with water and applied during the vegetative stage, when plants need extra nitrogen for lush foliage and strong stems. If you grow lettuce, spinach, kale, basil, or similar crops, this product is tailored for you.

The standout feature here is the high nitrogen formulation, which directly supports the kind of growth that makes vegetable gardens productive. Nitrogen is the key nutrient for leaf and stem development, and this fertilizer delivers it in a form that plants can absorb quickly. Users should see noticeable green-up within a week or two of regular feeding, especially if they follow the recommended dilution rates. The liquid format also makes it easy to adjust dosage for different plant sizes or growth stages.

Build quality is straightforward: the fertilizer comes in a sturdy plastic jug with a handle for easy pouring. The label includes clear mixing instructions and a list of compatible vegetables. Since it is made in the USA, you can expect consistent quality control. There are no fancy additives or proprietary blends here, just a reliable high-nitrogen feed that does what it promises.

One potential drawback is that this fertilizer is not ideal for plants that are fruiting or flowering, like tomatoes or peppers, since too much nitrogen can delay blooming. Also, because there are no user reviews yet, it is hard to gauge long-term results or any issues with sediment or mixing. Gardeners who need a balanced or bloom-specific formula should look elsewhere.

Overall, the TPS NUTRIENTS High Nitrogen Fertilizer is a solid choice for vegetable gardeners who prioritize leafy growth and stem strength. It is easy to use, made in the USA, and formulated for the specific needs of garden crops. If you are growing greens or herbs and want a straightforward nitrogen boost, this product is worth trying.

Petramax Liquid Nitrogen Fertilizer 28-0-0 is a high-nitrogen lawn food designed to revive yellow, nitrogen-starved grass and promote deep green color and vigorous growth. It targets homeowners who want a straightforward liquid fertilizer that delivers visible results quickly without the hassle of granular products. This formula works on all grass types, whether you have warm-season Bermuda or cool-season fescue.

The standout feature is its dual-release nitrogen technology. Seventy percent is quick-release for an immediate green-up, while 30% is slow-release to keep feeding your lawn between applications. In practice, this means you see a rapid change in color and density, and the benefits last longer than with standard fast-release liquids. The mixing instructions are simple: 5 ounces per gallon of water for regular maintenance, or 10 ounces for correcting a nitrogen deficiency. One gallon can treat up to 25,600 square feet, which is generous for most residential lawns.

Petramax comes from PetraTools, a Pennsylvania-based company known for sprayers and lawn care solutions. The fertilizer is easy to apply with any garden sprayer, and the company offers a 100% satisfaction guarantee with US-based support. There are no customer reviews available at this time, so we cannot confirm long-term user satisfaction, but the formulation itself is solid for a nitrogen-focused product.

A couple of honest drawbacks: because this is a high-nitrogen product, you need to follow the dosage carefully to avoid burning your grass, especially in hot weather. Also, you will need a sprayer if you don't already own one. For the price, it is competitive with other liquid nitrogen fertilizers, and the slow-release component adds extra value. Overall, if you want an easy, effective way to green up your lawn without complicated steps, this is a strong option.

Petramax Liquid Nitrogen Fertilizer 28-0-0 is a concentrated liquid lawn food designed to revive tired, yellowing grass and push it into a deep, vibrant green. This 32-ounce bottle is aimed at homeowners who want a fast-acting solution for nitrogen-deficient lawns without the hassle of granular applications. Whether you have warm-season Bermuda or cool-season fescue, this formula is made to work across all grass types.

The standout feature here is the dual-release technology. Seventy percent of the nitrogen is quick-release, giving you visible greening within days, while the remaining thirty percent is slow-release, feeding the grass steadily for weeks. This means you get an immediate boost plus ongoing nourishment between treatments. It's a practical approach for busy homeowners who don't want to reapply every few days.

Applying the fertilizer is straightforward. Mix 5 ounces per gallon of water for maintenance or 10 ounces per gallon to correct a nitrogen deficiency. Using a sprayer (PetraTools recommends their own, but any garden sprayer works) you can cover up to 12,800 square feet for maintenance or 6,400 square feet for correction. The liquid consistency makes it easy to get even coverage without the clumping or burning risk of some granular products, though you still need to follow mixing instructions carefully to avoid over-application.

On the downside, this is a nitrogen-only fertilizer (28-0-0). If your lawn needs phosphorus or potassium, you'll need to supplement with another product. Also, because it's a synthetic fertilizer, it's not suitable for organic gardening. Some users may also find the need to mix and spray less convenient than a hose-end sprayer or granular spreader, but for targeted feeding, the liquid form is actually more precise.

Overall, Petramax 28-0-0 delivers on its promise of fast, noticeable greening. The dual-release system is a genuine advantage, and the large coverage area makes the bottle last. If you're looking for a high-nitrogen boost to revive a lackluster lawn and don't mind a little mixing, this is a solid choice. PetraTools also backs it with a satisfaction guarantee and US-based customer support, which adds peace of mind.

Size: 32 fluid ounces (946 mL)

NPK Ratio: 28-0-0 (Nitrogen-Phosphorus-Potassium)

Release Technology: 70% quick-release, 30% slow-release

Coverage: Maintenance: up to 12,800 sq ft; Correction: up to 6,400 sq ft

Application: Mix with water and spray (5-10 oz per gallon)

Weight: 2 pounds

Brand: Petramax by PetraTools

Origin: USA (Carlisle, Pennsylvania)

Simple Lawn Solutions 28-0-0 High Nitrogen Liquid Fertilizer is a concentrated lawn food designed to give your grass a potent dose of nitrogen, the key nutrient for vibrant green color and vigorous growth. This product is ideal for homeowners who notice their lawn looking pale or thin, especially after winter or during active growth periods in spring and summer. It works on all common grass types, from Bermuda to Fescue, and can even be used on garden plants and ornamentals.

The standout feature here is the dual-release blend: 70% of the nitrogen is quick-release for an immediate green-up, while 30% is slow-release, providing a steady supply between applications. This means you see results fast, but the lawn stays fed longer without needing constant reapplication. The high nitrogen content (28-0-0) makes it especially effective for correcting nitrogen deficiencies common in many soils.

In terms of usability, the liquid concentrate mixes easily with water and can be applied with a standard hose-end sprayer or watering can. The quart size covers a decent area, making it a good value for the price. The formula is manufactured in the USA by a company with over 25 years of experience in the professional turf industry, which adds a layer of trust.

One potential drawback is the lack of phosphorus and potassium. If your lawn needs a balanced fertilizer, you will need to use this product alongside a complete fertilizer program. Also, because it's high in nitrogen, careful application is required to avoid fertilizer burn. Always follow the recommended rates for your specific grass type.

Overall, Simple Lawn Solutions 28-0-0 is a solid choice for anyone looking to quickly boost their lawn's color and density. While it may not replace a comprehensive fertilizer program, it works well as a supplement or a targeted treatment for nitrogen deficiency.

The Covington 30-0-0 Liquid Fertilizer is a high-nitrogen concentrate designed for anyone looking to give their lawn, garden, or ornamentals a quick, noticeable green-up. With 30% nitrogen and zero phosphorus or potassium, it's ideal for situations where you need to boost leafy growth without adding other nutrients. Homeowners, gardeners, and even commercial landscapers will find it useful for revitalizing tired turf or pushing vegetable plants into vigorous growth.

What sets this fertilizer apart is its low-salt formulation. Many high-nitrogen products can burn grass or plants if applied too heavily, but Covington's blend aims to reduce that risk. In practice, this means you can use it more confidently during warmer months or on sensitive plants. The concentrate mixes easily with water, and the included guidelines help you dial in the right ratio for lawns versus gardens. Coverage is impressive: one 32-ounce bottle treats up to 3,250 square feet, which is plenty for a medium-sized yard or several raised beds.

The product works well for both foliar feeding and soil drenching. If you want fast results, spraying it directly on leaves gives a near-immediate color change. Soil application feeds the roots more gradually. Either way, you'll see results within a week or two. The lack of phosphorus and potassium means it's not a standalone complete fertilizer, but that's by design. It's meant to supplement your existing program or address specific nitrogen deficiencies.

Build quality is solid. The bottle is sturdy, the cap seals tightly, and the label includes clear mixing charts. Covington manufactures the fertilizer in the USA, and the ingredients are high-purity. It's also safe for kids and pets once the spray has dried, which is a nice peace-of-mind feature for families. On the downside, you do need to measure carefully. Overdoing it can still lead to burn, especially on young plants. And if your soil already has plenty of nitrogen, this product won't help with other nutrient shortages.

Overall, the Covington 30-0-0 is a reliable tool for targeted nitrogen feeding. It's not a magic bullet for every garden problem, but it does exactly what it promises: fast, safe greening. If you need to give your lawn a boost or push your vegetables into high gear, this is a solid choice. Just pair it with a balanced fertilizer if your plants need phosphorus or potassium too.