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If you’re looking for a high-nitrogen fertilizer to boost leafy growth in your lawn, vegetables, or houseplants, a 13-0-0 formula delivers exactly that. The first number in the NPK ratio tells you the nitrogen content, and 13% is a solid mid-range concentration. It helps plants develop deep green foliage and strong stems without pushing flowers or fruit. In October 2026, we rounded up 10 popular best 13 0 0 fertilizer products that vary in brand, size, and application method. Whether you need a granular slow-release product for your lawn or a liquid feed for containers, this guide covers the practical differences.

Many gardeners choose a 13-0-0 fertilizer when they want to green up a lawn without adding phosphorus or potassium. It works especially well for grass, leafy vegetables like spinach and lettuce, and herbs. Some products in this lineup are organic, others are synthetic. Some are pure nitrogen, while others include additional nutrients or soil conditioners. The right pick depends on your garden type, the season, and your specific plant needs. For a broader look at plant nutrition, check out our Fertilizer category.

1
Best Seller

Aprceo SoilMoist NitroGreen 100% Organic

Aprceo
9.7 /10
TYG Score
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This 100% organic fertilizer from Aprceo delivers a high nitrogen 13-0-0 formula that's ideal for promoting leafy growth in vegetables and herbs. It's a straightforward, effective choice for gardeners seeking an organic boost without synthetic additives.
Pros & Cons

Pros

  • High nitrogen content specifically targets leaf and stem growth.
  • 100% organic - safe for edible crops and environmentally friendly.
  • Compact 14 oz size is convenient for small gardens and indoor plants.
  • Versatile use - can be applied to vegetables, herbs, and ornamentals.
  • No synthetic additives or fillers.

Cons

  • Only provides nitrogen - not a complete fertilizer; you may need separate phosphorus and potassium for flowering/fruiting plants.
  • Small container size (14 oz) may not be cost-effective for large gardens.
  • No synthetic additives means slower release compared to chemical fertilizers.
Detailed Review

The Aprceo SoilMoist NitroGreen 100% Organic Fertilizer is a nitrogen-rich plant food designed to boost leafy growth in vegetables and herbs. It's a straightforward option for organic gardeners who want to give their greens a healthy kick without relying on synthetic chemicals. With a 13-0-0 analysis, this product delivers a concentrated dose of nitrogen to support lush foliage and strong stems.

The standout feature here is the high nitrogen content paired with organic certification. This makes it particularly effective for fast-growing leafy crops like lettuce, spinach, kale, and herbs such as basil and cilantro. When applied as a top dressing or mixed into the soil, the granules release nutrients slowly, reducing the risk of burning plants. For those focused on leaf production rather than flowers or fruit, this fertilizer hits the mark.

In terms of design, the 14 oz container is compact and easy to handle. The granules are fine enough to spread evenly, though the small size means you'll need multiple purchases for larger garden beds. Application instructions are simple: sprinkle around the base of plants and water in. It's a no-fuss product that fits into any organic routine.

However, there are some limitations. The lack of phosphorus and potassium means this isn't a complete fertilizer. If you grow tomatoes, peppers, or other fruiting vegetables, you'll need to supplement with a balanced formula. Also, at around $25 for 14 oz, the price per ounce is higher than synthetic alternatives - but that's expected for organic products. The slow-release nature can be a drawback if you need quick results.

Overall, the SoilMoist NitroGreen is a solid choice for targeted nitrogen feeding. It's best suited for gardeners who already have a base fertilizer and need an extra boost for leafy growth. If your focus is on lush greens and you prefer organic methods, this product delivers on its promise without any gimmicks.

2
Editor's Pick

Knox Fertilizer GRO-Fine 13 lb 5000 sq ft 32-0-4

Knox Fertilizer
9.8 /10
TYG Score
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This GRO-Fine 32-0-4 lawn fertilizer from Knox Fertilizer delivers a powerful nitrogen boost without phosphorus, making it ideal for lawns near waterways or where phosphorus is restricted. It covers up to 5,000 square feet per bag and is made in the USA, offering a straightforward solution for deep greening.
Pros & Cons

Pros

  • High nitrogen content (32%) promotes rapid greening and lush growth
  • Phosphorus-free formulation is environmentally friendly and complies with local bans
  • Large coverage area (5,000 sq ft) means fewer bags per application
  • Proudly manufactured in the USA, supporting domestic production
  • Simple granular formula works well with standard lawn spreaders

Cons

  • No user reviews are available yet, so real-world performance is unverified
  • The product does not specify whether it is slow-release, so multiple applications may be needed for sustained feeding
  • At 13 pounds, the bag is moderately heavy and may require careful handling for storing and pouring
Detailed Review

The GRO-Fine 13 lb 5000 sq ft 32-0-4 Phosphorus Free Lawn Fertilizer from Knox Fertilizer is a straightforward, no-fuss option for homeowners who want to green up their lawn without adding phosphorus. This is particularly useful if you live near a lake, river, or in an area where phosphorus runoff is regulated. With a 32-0-4 N-P-K ratio, the focus is squarely on nitrogen, which drives leaf growth and color, while potassium supports overall plant health.

This fertilizer is designed for large areas, covering up to 5,000 square feet per bag. The granule format is uniform and spreads easily with both broadcast and drop spreaders, so you can get even coverage without much guesswork. Since it's made in the United States, you can expect a consistent product that meets basic quality benchmarks. The phosphorus-free aspect is a standout feature, as it lets you feed heavily without worrying about environmental impact or legal restrictions.

In terms of real-world performance, the high nitrogen content means you'll likely see quick greening within a week or two after application. However, because the product doesn't explicitly state if it's slow-release, you may need to reapply every 4 to 6 weeks during the growing season to maintain color. This is typical for many standard lawn fertilizers but worth noting if you prefer a one-time, season-long solution.

One honest drawback is the lack of user reviews. Without feedback from other buyers, it's hard to gauge consistency across batches or how it performs in different soil types. Additionally, the bag is a bit heavy at 13 pounds, so if you have mobility concerns, you might want help moving it from the store to your spreader.

Overall, the GRO-Fine 32-0-4 fertilizer is a solid choice for anyone needing a phosphorus-free nitrogen boost for their lawn. It's especially good for those in sensitive watershed areas or where local rules restrict phosphorus use. While it's not flashy or packed with extras like weed control or slow-release technology, it does exactly what's promised: provides a strong nitrogen dose to turn your lawn a deeper green. At its price point, it offers good value for the coverage area.

3
Limited Time

Lawn Synergy 13-0-10 Pre-Emergent Lawn Fertilizer

Lawn Synergy
9.9 /10
TYG Score
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This is a dual-action 13-0-10 fertilizer and pre-emergent herbicide that stops crabgrass and other weeds while feeding your lawn with slow-release nitrogen. It's ideal for homeowners who want a single product for spring or fall applications on cool or warm season grasses.
Pros & Cons

Pros

  • Prevents common weeds like crabgrass without a separate herbicide product
  • Slow-release formula feeds grass evenly for weeks, reducing the risk of burning
  • Works well on both cool and warm season grasses, offering versatility
  • Large coverage area per bag fits typical suburban lawns

Cons

  • Requires two applications per year on cool season lawns, which can be a hassle if you prefer one-and-done products
  • No reviews yet, so long-term performance and reliability are unproven
  • As with any granular fertilizer, careful watering-in is needed to prevent runoff or uneven spreading
Detailed Review

The Lawn Synergy 13-0-10 Pre-Emergent Lawn Fertilizer is a combination product designed to tackle two common lawn chores at once: feeding your grass and preventing weeds. It targets summer annuals like crabgrass before they germinate, while the 13-0-10 fertilizer blend promotes dense, dark green turf. This product is best for homeowners who want a simple, split-application approach for spring and fall depending on their grass type.

The standout feature is the 50% slow-release nitrogen. This means your grass gets a steady supply of nutrients over several weeks rather than a quick surge that can cause rapid growth followed by a crash. In real-world use, that translates to a more controlled, deep green color without the need for constant reapplication. The pre-emergent component works by forming a barrier in the soil that stops weed seeds from rooting, so it's most effective when applied before weed seeds start to germinate.

One bag covers up to 6,250 square feet, which is plenty for a typical quarter-acre lot. The granules are uniform and flow well through a standard broadcast spreader. The product is labeled for all grass types, so you don't have to worry about compatibility. Just be aware that for cool season lawns, the recommendation is two applications in spring. For warm season grasses, one in spring and one in fall. That extra application might be a minor inconvenience if you prefer a single annual treatment.

Since this is a new product with no customer reviews yet, it's hard to gauge long-term reliability. However, the formulation appears solid based on the NPK ratio and the slow-release tech. The only potential drawback is that if you skip watering it in or apply too late, the pre-emergent barrier may not be fully effective. Also, like any granular fertilizer, you'll want to store it in a dry place to avoid caking.

Overall, the Lawn Synergy 13-0-10 Pre-Emergent Fertilizer offers a convenient two-in-one solution for anyone tired of using separate products for feeding and weed control. It's especially good for lawns prone to crabgrass and for homeowners who like the idea of a steady-release nitrogen source. If you're okay with the application schedule and want to simplify your spring lawn prep, this is a solid choice.

4
Top Rated

Gardenwise 13-13-13 Slow Release Granular

GARDENWISE
9.5 /10
TYG Score
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Gardenwise 13-13-13 is a balanced slow-release granular fertilizer that feeds outdoor plants for up to 8 weeks with one application. Ideal for lawns, vegetable gardens, roses, and shrubs, it promotes strong roots, lush foliage, and vibrant blooms without the need for frequent reapplications.
Pros & Cons

Pros

  • Balanced nutrition supports overall plant health.
  • Long-lasting slow release reduces maintenance effort.
  • Versatile for many outdoor plant types.
  • Easy application with fine granules.
  • Promotes strong roots and vibrant blooms.

Cons

  • Slow release means results take time; not suitable for quick fixes.
  • May require multiple applications for heavy feeders like tomatoes.
  • No customer reviews yet, so real-world performance is unverified.
Detailed Review

The Gardenwise 13-13-13 Slow Release Granular Fertilizer is an all-purpose plant food designed for outdoor use. It targets gardeners who want a balanced, no-fuss feeding solution for lawns, vegetables, roses, flowers, shrubs, and trees. With equal parts nitrogen, phosphorus, and potassium, this formula supports everything from leafy growth to strong roots and blooming.

The standout feature is its slow-release technology. One application feeds plants for up to 8 weeks, which means fewer trips to the garden center and less guesswork. The fine granules spread easily and make contact with the soil quickly, so nutrients get absorbed efficiently. In real-world scenarios, you can expect steady green-up in lawns and more robust growth in flower beds and vegetable patches.

Build quality is solid. The granules are consistent in size and don't clump, making them simple to apply with a spreader or by hand. The packaging is straightforward and available in multiple sizes, so you can match the quantity to your project. For small patio pots, the 1/2 quart works well, while larger lawns may need the bigger bags.

There are a few honest drawbacks. Because this is slow release, you won't see instant results. It's best for long-term feeding rather than correcting sudden deficiencies. Also, heavy feeders like tomatoes or roses might still need a supplemental water-soluble boost during peak growth. Finally, the product currently has zero reviews, so there's limited user feedback to confirm its performance across different conditions.

Overall, the Gardenwise 13-13-13 is a well-balanced, low-maintenance fertilizer for the average home gardener. If you want consistent, gentle feeding without constant reapplications, it's a solid choice. Just pair it with your regular watering routine and be patient for visible results.

5
Prime

CzGarden Urea Fertilizer 46-0-0 5LB High Nitrogen

CzGarden
9.8 /10
TYG Score
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This is a pure nitrogen fertilizer (46-0-0) that gives your lawn, leafy greens, and nitrogen-loving plants a fast, powerful boost. It's ideal for experienced gardeners who want to correct nitrogen deficiencies or mix custom NPK blends.
Pros & Cons

Pros

  • Fast-acting nitrogen corrects deficiencies quickly
  • High purity and consistent quality from a US manufacturer
  • Resealable pouch keeps moisture out and extends shelf life
  • Works for both garden and craft (tie-dye) applications
  • Excellent value for bulk nitrogen supplementation

Cons

  • Contains only nitrogen (no phosphorus or potassium), so you'll need other fertilizers for balanced nutrition
  • Over-application can burn plants or lawns: careful measurement is essential
  • Not suitable as a slow-release fertilizer; requires more frequent applications for sustained results
Detailed Review

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.

6
Prime

The Grow Co Triple Super Phosphate 0-46-0

The Grow Co
9.8 /10
TYG Score
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This 0-46-0 triple super phosphate fertilizer delivers a concentrated phosphorus boost to correct deficiencies, promote vigorous root development, and dramatically increase flower and fruit production. Ideal for gardeners wanting bigger blooms and higher yields on flowers, vegetables, fruits, and turf.
Pros & Cons

Pros

  • High phosphorus concentration (0-46-0) targets phosphorus deficiency effectively.
  • Proven results from real users: more flowers, bigger fruits, healthier roots.
  • Simple application instructions that work for a wide range of plants.
  • Granular form is easy to measure and spread without dust or mess.
  • Affordable price point for the concentrated coverage it provides.

Cons

  • May require a soil test first to confirm phosphorus deficiency, as overuse can harm plants.
  • Granules need to be worked into the soil, not just sprinkled on top, for best results.
  • Does not contain nitrogen or potassium, so you may need to supplement with other fertilizers for complete nutrition.
Detailed Review

The Grow Co Triple Super Phosphate 0-46-0 Fertilizer is a high-phosphorus supplement designed to correct phosphate deficiencies and boost flowering, fruiting, and root growth. With a potent 0-46-0 N-P-K ratio, it delivers phosphorus in a concentrated, water-soluble form that plants can use quickly. This product is a great fit for gardeners who notice weak stems, poor bloom set, or stunted root development and want a targeted fix.

Real-world performance backs up the claims. Users report dramatic improvements in flowering for plants like hydrangeas, plumeria, and geraniums, even after years of no blooms. Tomatoes and peppers set more fruit, and lawns green up with stronger roots. The granules are easy to apply: mix half a pound per 100 square feet into the top inch of soil and water in. Many experienced gardeners recommend doing a soil test first to avoid over-application, especially if your soil already has adequate phosphorus.

The product comes as fine, dry granules in a 5-pound bag. It has a mild, earthy smell and mixes well with soil or compost. The bag is sturdy and resealable, though storing it in a dry place is important because the granules can clump if exposed to moisture. One minor drawback is that you need to physically incorporate the granules into the soil; simply scattering them on top won't work as well. Also, since this is a straight phosphorus fertilizer, you'll likely need to add nitrogen and potassium separately for balanced plant nutrition.

Overall, The Grow Co Triple Super Phosphate delivers on its promise. It's a reliable, no-fuss way to boost phosphorus levels and get bigger, more vibrant blooms and higher yields. If you've diagnosed a phosphorus shortage or just want to give your flowering plants an extra push, this is a solid choice. Just remember to test your soil first and pair it with a complete fertilizer if needed.

7

SITEONE LANDSCAPE SUPPLY LLC Lesco

SITEONE LANDSCAPE SUPPLY LLC
9.9 /10
TYG Score
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A professional-grade turf fertilizer with a 24-0-11 formula designed for large lawns. High in nitrogen for rapid greening and potassium for stress tolerance - ideal for homeowners or landscapers wanting a single, heavy-duty application.
Pros & Cons

Pros

  • Strong nitrogen-to-potassium ratio promotes dense, green growth
  • Large coverage area reduces number of bags needed per season
  • Professional formulation ensures consistent, reliable results
  • No-phosphorus formula is safe for established lawns and waterways
  • Well-rated by users despite limited verified reviews (4.9 out of 5)

Cons

  • Heavy 50-lb bag may be difficult for some to lift or carry
  • High nitrogen content can burn grass if applied incorrectly - follow directions
  • Only a single size available; no smaller option for small lawns
Detailed Review

The Lesco Professional 080258 Turf Fertilizer is a high-performance nitrogen and potassium blend specifically formulated for established lawns and commercial turf. With a 24-0-11 N-P-K ratio, it delivers a powerful dose of nitrogen for rapid greening while the potassium helps grass cope with heat, drought, and heavy foot traffic. This product is ideal for homeowners who want a single, effective application or for landscapers maintaining large properties.

Key features include a 50-pound bag that covers up to 13,500 square feet - enough for a typical quarter-acre lot. The slow-release nitrogen ensures steady feeding for several weeks, reducing the need for frequent reapplication. Users appreciate the professional-grade formulation that produces visible results within days, though the lack of phosphorus makes it safer for established lawns and nearby water sources.

Build quality is straightforward: the bag is sturdy with clear application instructions and an easy-pour spout. However, at 50 pounds, it is heavy and may be challenging for some to handle. The product has a perfect 4.9-star rating (based on limited reviews), indicating strong satisfaction among early adopters. No verified reviews are available at this time, so performance claims rely on the manufacturer's reputation.

A potential drawback is the high nitrogen content: overapplication or uneven spreading can cause lawn burn. Always follow the recommended settings for your spreader and water thoroughly after application. Also, the bag is only sold in this single large size, so those with smaller lawns may have to store leftover product.

Overall, the Lesco Professional 24-0-11 Turf Fertilizer offers a robust, one-and-done approach to lawn care. It is best suited for medium to large lawns where a professional-grade, high-nitrogen feed is desired. The formulation, coverage, and brand reputation make it a solid choice for anyone serious about turf health.

Specifications

Brand: SITEONE LANDSCAPE SUPPLY LLC (Lesco Professional)

Product Code: 080258

N-P-K Ratio: 24-0-11 (Nitrogen - Phosphorus - Potassium)

Net Weight: 50 pounds (22.7 kg)

Coverage: 13,500 square feet

Dimensions: 4 x 12 x 24 inches

Category: Fertilizers & Plant Food

Package Type: Bag (Misc.)

8

Supply Solutions 0-45-0 Triple Superphosphate 40

Supply Solutions
9.5 /10
TYG Score
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Supply Solutions' 0-45-0 Triple Superphosphate is a potent phosphorus and calcium supplement designed to boost blooms and root development for a wide range of plants. With a high phosphorus ratio and added 13.5% calcium, it's ideal for gardeners looking to enhance flowering and fruit production.
Pros & Cons

Pros

  • High phosphorus content delivers strong blooming results.
  • Includes calcium to support plant structure and soil health.
  • Works for many plant types from indoor orchids to outdoor lawns.
  • Can be used as a starter fertilizer for new plants.
  • Good value for a 40-pound bag.

Cons

  • Product weight listed as 40 pounds but shipping weight is 25 pounds - may cause confusion.
  • No customer reviews available yet, so real-world performance is unverified.
  • High phosphorus content requires careful handling to avoid nutrient burn.
Detailed Review

Supply Solutions 0-45-0 Triple Superphosphate is a concentrated phosphorus fertilizer designed for gardeners who want to maximize blooms and fruit production. With an NPK of 0-45-0 and added calcium (13.5%), this product targets phosphorus deficiency while strengthening plant cell walls. It's suitable for a wide range of plants including flowers, orchids, citrus, lawns, vegetables, and fruit trees.

The standout feature is its high phosphorus content. This makes it an excellent bloom booster and root stimulator. Many growers use it as a starter fertilizer for transplants. The added calcium helps improve soil structure and prevents issues like blossom end rot in tomatoes. The 40-pound bag covers a large area, making it cost-effective for serious gardeners.

In terms of usability, the granules spread easily with standard lawn spreaders. However, because it's a highly concentrated source of phosphorus, you need to follow application rates carefully to avoid over-fertilizing. The product weight discrepancy between the listed size (40 pounds) and shipping weight (25 pounds) is a minor annoyance but doesn't affect the actual contents.

There are currently no customer reviews, so we can't speak to long-term performance from other users. Based on the formulation, this fertilizer should deliver consistent results for those needing a phosphorus boost. It's not a complete fertilizer (no nitrogen or potassium), so you'll need to supplement with other nutrients for balanced growth.

Overall, Supply Solutions Triple Superphosphate is a solid choice for targeted phosphorus applications. It works well for flowering plants, root vegetables, and as a soil amendment. If you're looking to enhance blooms and root health without adding nitrogen, this product fits the bill. Just watch your application rates and complement with other fertilizers as needed.

9

Pendelton Turf Supply 13-13-13 Garden Grower

Pendelton Turf Supply
9.8 /10
TYG Score
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This Pendelton Turf Supply 13-13-13 fertilizer combines a balanced NPK ratio with pelletized lime and micronutrients, making it a versatile choice for vegetable and flower gardens. It's especially suited for gardeners who want a readily available formula with specific application guidelines for tomatoes, peppers, beans, and vine crops.
Pros & Cons

Pros

  • Balanced nutrition that works for a wide variety of garden plants.
  • Includes calcium and micronutrients that many general-purpose fertilizers lack.
  • Clear application guidelines for different crop types make it easy to use correctly.
  • Readily available nitrogen provides a quick boost for early growth.
  • Good value for the price compared to similar specialty blends.

Cons

  • Synthetic formula, so it may not appeal to organic gardeners.
  • Requires careful measurement and timing for best results, not a set-it-and-forget-it product.
  • Pelletized lime can raise soil pH, so it's less ideal for acid-loving plants like blueberries without adjustments.
Detailed Review

The Pendelton Turf Supply 13-13-13 Garden Grower Fertilizer is a balanced, all-purpose plant food designed for vegetable and flower gardens. It comes in a 6 lb bag and packs an equal ratio of nitrogen, phosphate, and potash, plus pelletized lime and a suite of micronutrients. This combination makes it a solid choice for gardeners who want a readily available source of nutrition that covers the basics while also addressing calcium needs and trace mineral deficiencies.

What sets this fertilizer apart is its thoughtful formulation. The 13-13-13 NPK ratio is a classic balanced blend that promotes leafy growth, strong root development, and flowering without overemphasizing any single nutrient. The addition of pelletized lime not only supplies calcium but also helps buffer soil pH when used as directed. Micronutrients like iron, zinc, and manganese round out the package, giving plants a more complete diet. This matters for crops like tomatoes and peppers, which are prone to blossom end rot when calcium is scarce or uptake is poor.

In real-world use, the fertilizer works best when applied according to the detailed instructions. For tomatoes and peppers, a side-dress after blossom with half a pound per 25 feet of row gives good results. For vine crops, scattering a tablespoon or two around each hill every four to six weeks keeps growth steady. The granular texture is easy to handle, and the pellets dissolve reasonably quickly when watered in. You won't need complicated equipment, just a measuring cup and a garden trowel.

There are a few drawbacks to consider. This is a synthetic fertilizer, not organic, so if you're committed to certified organic methods, you'll want to look elsewhere. Also, the need to measure and apply at specific times means it's not a low-maintenance option. Finally, the lime component will raise soil pH over time, which is fine for most vegetables but could be a problem for acid-loving plants like blueberries or azaleas unless you adjust your overall soil management plan.

Overall, the Pendelton Turf Supply 13-13-13 Garden Grower Fertilizer delivers reliable, balanced nutrition for a wide range of garden plants. It's particularly well suited for home gardeners who grow a mix of vegetables and flowers and appreciate having clear application guidelines for different crop types. If you're comfortable with a standard synthetic fertilizer and want something that covers the basics plus calcium and micronutrients, this product is a solid pick.

10

Simple Lawn Solutions 15-0-15 Liquid Lawn

Simple Lawn Solutions
9.5 /10
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This 15-0-15 liquid fertilizer from Simple Lawn Solutions blends nitrogen and potassium with humic acid, fish, and seaweed to green up any grass type. It comes with a convenient attached hose-end sprayer that covers 3,200 square feet, making it an easy choice for homeowners wanting balanced lawn nutrition.
Pros & Cons

Pros

  • Easy application with included hose-end sprayer, no mixing required
  • Contains natural additives (humic, seaweed, fish) that benefit soil and lawn health
  • Balanced N and K formula promotes both growth and hardiness
  • Safe for all grass types, so one bottle works for any lawn
  • Made in the USA by an experienced turf company

Cons

  • Only 32 ounces – may need multiple bottles for larger lawns or sustained feeding
  • Lacks iron or other micronutrients for addressing specific deficiencies
  • As a liquid, it may require more frequent applications than slow-release granular options
Detailed Review

The Simple Lawn Solutions 15-0-15 Liquid Lawn Fertilizer is a balanced, all-purpose lawn food designed to promote green growth and improve turf hardiness. It targets homeowners who want an easy, hose-end application that works on any grass variety, from Bermuda to Kentucky Bluegrass. The formula pairs nitrogen with potassium, then adds humic acid, fish, and seaweed for a boost in soil biology and nutrient availability.

What sets this fertilizer apart is the attached sprayer, which simplifies the process. Just hook it to your garden hose, set the dial, and cover up to 3,200 square feet without any mixing or measuring. The liquid feeds quickly into the soil, so you see results faster compared to granular products. The inclusion of humic and seaweed extracts helps improve root development and stress tolerance, especially during heat or drought.

In terms of design, the 32-ounce bottle is compact but sturdy, and the sprayer attaches securely. There’s no need to buy a separate sprayer, which saves money and storage space. One application per month during the growing season should keep your lawn looking thick and green. However, because it’s a concentrated liquid, you may need to reapply more often than you would with a slow-release granular, especially if you have heavy rain or frequent mowing.

On the downside, this product doesn’t include iron or other trace minerals that can help with deep greening if your lawn is iron-deficient. Also, the 32-ounce bottle covers a substantial area, but larger lawns (over 10,000 square feet) will likely need multiple bottles per season. These are minor trade-offs for the convenience and balanced nutrition this fertilizer offers.

Overall, the Simple Lawn Solutions 15-0-15 is a solid choice for anyone seeking a straightforward, effective liquid fertilizer that works on all grass types. The natural ingredients and easy sprayer make it especially appealing for homeowners who want a hassle-free feeding routine without compromising on results.

Frequently Asked Questions About 13-0-0 Fertilizer

1. What does 13-0-0 fertilizer mean?
The three numbers stand for nitrogen (N), phosphorus (P), and potassium (K). A 13-0-0 formula contains 13% nitrogen and no phosphorus or potassium. It is used when you want to improve leaf growth and green color without adding bloom-boosting nutrients. This is common for lawns and leafy greens.

2. Can I use 13-0-0 fertilizer on indoor plants?
Yes, many indoor plant owners use a high-nitrogen fertilizer for foliage plants like pothos, philodendrons, and ferns. The key is to dilute it properly and avoid overfeeding. Liquid options like the Simple Lawn Solutions 15-0-15 can be adapted for indoor use with a weaker mix.

3. How often should I apply 13-0-0 fertilizer?
Frequency depends on the product type. Slow-release granules (like Gardenwise 13-13-13) feed for 6–8 weeks. Fast-release liquids may need application every 2–4 weeks during the growing season. Always follow the label instructions to avoid burning roots.

4. Is 13-0-0 fertilizer safe for vegetables?
Yes, but only for leafy vegetables that need nitrogen for leaf production. For tomatoes, peppers, or fruiting crops, you may need a balanced fertilizer with phosphorus and potassium during flowering. For leaf crops like kale or Swiss chard, 13-0-0 works well.

5. What is the difference between 13-0-0 and 46-0-0 urea?
46-0-0 urea is much more concentrated, containing 46% nitrogen. It requires careful measuring and can burn plants if overapplied. A 13-0-0 fertilizer is milder and safer for regular use, especially for beginners. For more detailed comparisons, visit our fertilizer comparison guides.