Top Best High Nitrogen Organic Lawn Fertilizer of 2026 for Lawn Feeding

The Simple Lawn Solutions Ultimate 3-18-18 is a liquid lawn fertilizer designed for homeowners who want to target root development and turf hardiness without promoting excessive leaf growth. With its high phosphorus and potassium content, this fertilizer is best suited for lawns that need a boost during establishment, recovery from stress, or fall feeding. It's a good choice if you've noticed your lawn struggling with weak roots, poor color, or reduced tolerance to heat and drought.

The standout feature is the NPK ratio: 3% nitrogen, 18% phosphorus, and 18% potassium. This low-nitrogen, high-phosphorus-and-potassium blend encourages strong root systems and helps the lawn handle environmental stress. The liquid formulation is easy to apply using the included hose-end sprayer, which delivers the correct dilution automatically. One 32-ounce bottle covers up to 3,200 square feet, making it economical for medium to large lawns.

Build quality is solid. The fertilizer comes in a sturdy bottle with a clearly labeled sprayer. The concentrate is made from feed-grade ingredients and produced in the USA by a company with professional turf experience. Users should note that the high phosphorus content may not be beneficial for all soils, especially if you have naturally high phosphorus levels. A soil test is recommended before applying any high-phosphorus fertilizer to avoid runoff and nutrient imbalances.

There are a few potential drawbacks. The hose-end sprayer can sometimes apply unevenly if you don't maintain a consistent walking pace, and it may not deliver the same precision as a tank sprayer. Also, while the concentrated formula is efficient, the upfront cost is higher than many bagged granular fertilizers. That said, the convenience and targeted nutrient delivery often justify the price for lawns with specific needs.

Overall, the Simple Lawn Solutions 3-18-18 is a reliable, easy-to-use liquid fertilizer for strengthening roots and improving stress resistance across all grass types. If you need a late-season feed or are establishing a new lawn, this product delivers visible results. Just be sure to follow dosage instructions and consider your soil's existing phosphorus levels for best results.

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.

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

Espoma Turf-Tone Lawn Starter Fertilizer is a natural organic option for those looking to establish a new lawn without synthetic chemicals. Formulated with a 4-6-3 analysis and the company's exclusive Bio-Tone blend, it provides nitrogen, phosphorus, and beneficial microbes to support seed germination and sod rooting. This 30 pound bag covers up to 3,000 square feet, making it suitable for medium to large lawn projects.

The standout feature here is the Bio-Tone formula, which contains endo and ectomycorrhizae plus other beneficial bacteria. These organisms help roots develop deeper and more efficiently, improving water and nutrient uptake. The long-lasting nitrogen releases slowly over several weeks, so young grass gets consistent feeding without the risk of burning. Users who prefer organic lawn care will appreciate that this fertilizer is safe for children, pets, and the environment.

Application is straightforward: you can use a drop or broadcast spreader, then water the area thoroughly. For best results, Espoma recommends applying at the time of seeding or sod installation and keeping the soil moist until the grass is established. The granular texture spreads evenly without clumping, which is a plus for accuracy. The bag itself is sturdy and resealable, though it's heavy at 30 pounds.

One honest drawback is that organic fertilizers typically require warmer soil temperatures and consistent moisture to activate. If you're in a cooler climate or expecting dry weather, you might need to water more frequently. Also, results are not instant; you'll see slower green-up compared to synthetic starters. But the payoff is healthier soil over time.

Overall, Espoma Turf-Tone is a solid choice for homeowners committed to natural lawn care. It delivers on its promise of strong root growth and sustained nutrition without harsh chemicals. If you're patient and willing to water properly, this fertilizer will help you build a resilient, lush lawn from the ground up.

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

CzGarden Urea Fertilizer 46-0-0 is a straight nitrogen fertilizer designed for growers who need a fast, powerful boost for their plants. With a 46-0-0 NPK ratio, it delivers nearly half its weight in nitrogen, making it one of the most concentrated nitrogen sources available. This product is ideal for lawns that need quick greening, leafy vegetables like lettuce and spinach, and nitrogen-hungry crops such as tomatoes and citrus trees. It's also a favorite among experienced gardeners who blend their own custom fertilizers to target specific nutritional needs.

The standout feature is the high purity and water solubility of the granules. Users consistently report seeing results within days: lawns turn lush green, plants put on new growth, and bare spots fill in quickly. The resealable pouch is a practical touch, keeping the fertilizer dry and easy to store. And if you're into tie-dye, the same granules can be used to create vibrant colors on fabric, adding unexpected versatility to the product.

Build quality is solid for a granular fertilizer. The 5-pound pouch is durable and includes a visible resealable zipper. The granules are uniform and not overly dusty, which makes measuring and applying them straightforward. Because it's made in the USA, you can count on consistent batch quality and no mystery fillers.

On the downside, this is a one-note fertilizer. It won't provide phosphorus or potassium, so if your soil is already low in those, you'll need to supplement. It's also fast-acting, not slow-release, so it can burn plants if you overdo it. A few users mentioned the importance of following directions carefully to avoid scorching the lawn. And it's not certified organic, so that's a dealbreaker for strict organic gardeners.

Overall, CzGarden Urea Fertilizer 46-0-0 delivers exactly what it promises: pure, potent nitrogen for when your plants need a rapid green-up. It's a great tool to have in your garden shed for targeted feeding or custom mixing. If you know what you're doing with nitrogen, this is a smart buy.

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 Scotts Turf Builder WinterGuard Fall Lawn Food is a seasonal fertilizer built for one thing: strengthening your lawn as it heads into winter. If you live in an area with a real winter or just want your grass to bounce back faster in spring, this product targets the root system when it matters most. It's made for all grass types, so you don't have to worry about compatibility whether you have cool-season Kentucky bluegrass or warm-season zoysia.

The standout feature here is the nutrient blend that drives root growth during autumn. While many fertilizers focus on quick green-up, WinterGuard prioritizes deep, strong roots below the soil. That means your lawn is better equipped to handle winter dormancy and will green up earlier and more uniformly in spring. From a real-world standpoint, it's simple to use: just apply with a broadcast or drop spreader on a wet or dry lawn, then let rain or irrigation carry nutrients in. One bag covers 4,000 sq ft, which is a solid amount for an average suburban yard.

In terms of design, this is a granular fertilizer similar to other Scotts products. The granules are uniform and spread easily without clumping. The bag is sturdy and resealable if you need to store leftovers, but you'll likely use the whole bag in one go. There's no special mixing or measuring beyond setting your spreader to the recommended rate. The only real drawback is its seasonality - this is not a product you should use in spring or summer. It's specifically for fall feeding, so you'll need separate products for other times of the year. Also, if your lawn is larger than 4,000 sq ft, be prepared to buy multiple bags.

Some users might wish for faster visual results, but that's not the point of WinterGuard. The payoff comes next spring when your lawn fills in more evenly and handles the first mowing better. For homeowners who want a reliable, no-fuss way to care for their lawn through colder months, this fertilizer delivers exactly that.

Verdict: If you have a lawn and you want it to survive winter stronger and come back thicker, Scotts Turf Builder WinterGuard is a smart, proven choice. It's easy to apply, works on any grass, and does exactly what it promises - no hype, just solid root building.

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 Simple Lawn Solutions 16-4-8 Liquid Fertilizer is a concentrated nutrient spray designed for homeowners who want a lush, green lawn without the hassle of granular products. It's ideal for anyone with common grass types, from those trying to revive a neglected yard to gardeners performing routine seasonal feeding. The balanced NPK ratio targets overall lawn health, making it a great foundational product for most situations.

Performance is where this product truly shines. Users consistently report a rapid greening effect, often visible within a day or two. The liquid format allows nutrients to be immediately available to the grass, leading to faster results than you'd typically see with solids. Reviews highlight its effectiveness on various grass types and its ability to strengthen lawns that have been stressed by weather, drought, or previous chemical treatments. It provides a noticeable boost in color and thickness without the burn risk associated with some high-nitrogen fertilizers.

From a usability standpoint, the design is straightforward. The concentrate mixes with water in any standard tank or hose-end sprayer, making application a simple, one-person job. There's no heavy bag to haul or uneven spreading to worry about. The formula includes seaweed and fish emulsion, which are excellent organic additives that help condition the soil and improve the efficiency of the primary nutrients. It's made in the USA with quality ingredients, which adds a layer of trust for many buyers.

There are a couple of considerations. Because it's a liquid that's readily absorbed, the effects aren't as long-lasting as some slow-release granular options. You'll likely need to reapply every 4-6 weeks during the growing season for sustained results. Also, like any fertilizer, its success is tied to proper lawn care practices, especially adequate watering after application to move the nutrients into the root zone.

The final verdict is that Simple Lawn Solutions 16-4-8 is an excellent, no-fuss liquid fertilizer that does exactly what it promises. It delivers fast greening and healthy growth for virtually any lawn type with minimal effort. If you value convenience and visible results over the extended timeline of granular fertilizers, this is a top-tier choice that has earned its strong reputation.

Primary Use: Balanced lawn feeding and greening for spring and summer.

Grass Compatibility: Bermuda, St. Augustine, Zoysia, Buffalo, Centipede, Florida Palmetto, Bahia, Fescue, Ryegrass, Kentucky Bluegrass.

NPK Ratio: 16-4-8 (Nitrogen-Phosphorus-Potassium).

Additional Ingredients: Contains seaweed and fish emulsion.

Form: Liquid concentrate.

Mixing Ratio: 3-5 fl. oz. per gallon of water.

Application: Apply with a hose-end or tank sprayer to a moist lawn. Water thoroughly after application.

Best For: General lawn maintenance, correcting nutrient deficiencies, and quick green-up.