Best Organic Fertilizer For Lawn: Compare 10 Lawn Formulas

#1 · Best Overall

1. Jonathan Green Organic Lawn Food

• Weight: 15 lb
• Form: Granules

Best for: Steady-season lawn feeding.

Why it ranks #1: Its 10-0-1 formula covers 5,000 square feet, feeds gradually for 8 to 10 weeks, and is listed for established and newly seeded or sodded lawns.

An 8-to-10-week gradual nutrient release is the defining feature of Jonathan Green Organic Lawn Food, helping maintain a more consistent feeding schedule between applications. Its 10-0-1 formula includes iron for deep greening, and the granules can be used on established turf as well as newly seeded or sodded lawns.

The 10-0-1 analysis supplies nitrogen without phosphorus, while iron supports the deep-green color called out in the product details. Gradual release over 8 to 10 weeks means the feeding is spread across time rather than delivered all at once. The granules can be applied any time the ground is not frozen, and the supplied facts say they will not burn lawns in hot weather. Its stated coverage is 5,000 square feet, useful for planning lawn applications.

Skip it if you need phosphorus in a lawn formula; Espoma Turf-Tone Lawn Starter offers a 4-6-3 analysis for new turf.

A practical fit for lawn owners seeking organic granules with an extended feeding interval and iron for color, including those establishing seed or sod. Its 10-0-1 analysis is the boundary if your lawn program specifically calls for phosphorus.

Listed on Amazon as: Jonathan Green Organic Lawn Food – 10-0-1 Grass Fertilizer – 5,000 Sq Ft

#2 · Best Plant-Based

2. Purely Organic Lawn Food

• Weight: 15 lb
• Form: Granules

Best for: Phosphate-restricted neighborhoods.

Why it ranks #2: This plant-based 10-0-2 formula uses soy and distillers grains, covers 3,000 square feet, and contains no phosphorus to meet restrictions.

A phosphorus-free 10-0-2 formula makes Purely Organic Products Lawn Food a relevant choice where local rules restrict phosphate use. Its plant-based blend includes distillers grains and soy, while the product states that it will not burn lawns and allows re-entry without a waiting period after application.

The 10-0-2 analysis omits phosphorus, matching the stated purpose of meeting town and municipality restrictions on phosphate use. Soy and distillers grains provide the plant-based formula, and the product description presents it as lawn food for lush, green turf. Granules cover 3,000 square feet, giving buyers a defined area for application planning. The stated no-restriction re-entry time suits households that want to resume lawn use after spreading without waiting for a specified interval.

Skip it if you need phosphorus for new turf establishment; Espoma Turf-Tone Lawn Starter supplies a 4-6-3 analysis.

Choose it for established lawn feeding where phosphate restrictions matter and a plant-based formula is preferred. Its 3,000-square-foot coverage is the key planning consideration, and the zero-phosphorus analysis is not a starter-fertilizer match.

Listed on Amazon as: Purely Organic Products Lawn Food 10-0-2, 15 LB (Covers 3,000 Square Feet)

#3 · Longest Feeding

3. Scotts Natural Grass Food

• Weight: 12.7 lb

Best for: Immediate-water feeding routine.

Why it ranks #3: It begins feeding after application and watering, continues for up to 10 weeks, and is described as natural with no added artificial ingredients or pesticides.

O.M. Scott & Sons Natural Grass Food begins feeding when you water immediately after application and continues for up to 10 weeks. That sequence gives DIY lawn owners a straightforward spread-and-water routine, with the product described as a natural fertilizer made from nutrient sources found in nature.

The directions pair application through a Scotts spreader with light watering, and the product specifies immediate watering after application to start feeding. Its stated feeding period lasts up to 10 weeks, with directions to feed every 8 to 10 weeks, up to four times yearly. The natural formula is described as containing no added artificial ingredients or pesticides. Together, the spreader guidance and watering step make the workflow clear, while the re-entry information says people and pets can return after application.

Skip it if you cannot water immediately after spreading; Jonathan Green Organic Lawn Food provides gradual release without that stated immediate-watering step.

A fit for DIY homeowners who can spread with a Scotts spreader and water immediately afterward. Its feeding interval and natural-ingredient positioning suit routine lawn care, but the application workflow depends on having water available right away.

Listed on Amazon as: O.M. Scott & Sons Natural Grass Food, 12.72 lbs.

#4 · Fast Green-Up

4. Safer Lawn Restore

• Weight: 22 lb
• Form: Granules

Best for: Quick-green problem-lawn care.

Why it ranks #4: Its 9-0-2 formula is described as non-burning, covers up to 5,000 square feet, and may green lawns within 3 to 5 days.

Safer Brand Lawn Restore states that lawns start greening within 3 to 5 days of application, making quick visible color response its defining feature. The 9-0-2 granules also target stronger roots and thicker turf, with a non-burning formula intended for year-round care across spring, summer, and fall.

The stated 3-to-5-day greening window gives buyers a clear expectation for visible response, while the 9-0-2 analysis supplies nitrogen and potash. Safer says the formula strengthens root systems and promotes soil vitality for thicker, healthier grass. Application is listed for spring, summer, and fall, providing multiple seasonal windows. Its non-burning claim and stated 5,000-square-foot coverage help with lawn planning, while directions call for protective equipment and careful application.

Skip it if you need phosphorus in a lawn fertilizer; CountryMax Organic Lawn Fertilizer offers a 10-6-4 analysis for root and turf support.

A fit for lawn owners seeking a stated quick greening window alongside root and turf support across spring, summer, and fall. Use its 5,000-square-foot coverage for planning, and follow directions requiring protective equipment.

Listed on Amazon as: Safer Brand Lawn Restore Natural Lawn Fertilizer – 9335SR – Non-Burning Fertilizer – 9-0-2 NPK – Use for Healthy Grass – Covers up to 5,000 Sq Ft

#5

5. Jonathan Green 8-0-1 Lawn Food

• Weight: 30 g
• Form: granules" or "pellets

Best for: Gentle year-round lawn care.

Why it ranks #5: The slow, gentle 8-0-1 formula is intended to rejuvenate tired lawns and can be used throughout the seasons, including for establishing new seedings.

Jonathan Green 8-0-1 Organic Lawn Food uses a slow, gentle feeding approach to help rejuvenate tired lawns and develop thick, dark-green turf over time. Its food-grade ingredients are listed without fillers, manures, or biosolids, and the product can be used throughout all seasons.

The 8-0-1 formula is paired with slow, gentle feeding, supporting the stated goal of gradually improving tired or sick lawns rather than promising an immediate color change. Jonathan Green lists use throughout all seasons and says it is suitable for establishing new seedings, extending its fit beyond established turf. Granular or pellet form supports spreader-style application, while the title gives coverage of 5,000 square feet. The product specifies food-grade ingredients and no fillers, manures, or biosolids.

Skip it if you need phosphorus for starting turf; Espoma Turf-Tone Lawn Starter has a 4-6-3 analysis and is specified for new seed and sod.

A fit for lawn owners seeking gradual, year-round feeding and a formula described without fillers, manures, or biosolids. Its phosphorus-free 8-0-1 analysis is the boundary for programs that call for phosphorus.

Listed on Amazon as: Jonathan Green & Sons, 10310 8-0-1 Organic Lawn Food, 5000 sq. ft.

#6

6. Milorganite 6-4-0 Fertilizer

• Weight: 32 lb
• Form: Pelletized

Best for: Low-salt iron-rich feeding.

Why it ranks #6: Its 6-4-0 pelletized formula includes organically complex iron and slow-release feeding; the listing also notes an earthy aroma after application.

Milorganite combines a low-salt formula with organically complex iron, addressing two common lawn-care concerns: streaking or burn and deep-green color. The 6-4-0 fertilizer is pelletized, and the bundle includes a printed feeding and spreader-tips brochure with seasonal application guidance.

The product says its low-salt formula helps avoid streaks, stripes, and fertilizer burn, including in hot or dry conditions. Organically complex iron supports deep green color without the concrete staining associated with iron salts in some synthetic fertilizers. Pelletized material is paired with a brochure offering seasonal application and spreader tips, helping buyers plan use. The listed ingredient information identifies heat-dried microbes, and the supplied facts note an earthy aroma after application that should dissipate within a few days.

Skip it if you want to avoid an earthy post-application aroma; Purely Organic Products Lawn Food uses soy and distillers grains and specifies no smelly biosolids.

A fit for buyers seeking iron-supported greening and low-salt feeding, with seasonal guidance included for spreader use. The earthy aroma is a relevant boundary, especially for lawns where odor after application would be unwelcome.

Listed on Amazon as: Milorganite 6-4-0 Fertilizer and Feeding Tips Brochure Bundle, 32lb

#7

7. CountryMax Organic Lawn Fertilizer

• Weight: 36 lb
• Form: Granules

Best for: Root-focused turf building.

Why it ranks #7: The 10-6-4 slow-release formula emphasizes root development and turf density, making it a fit for buyers prioritizing thicker grass and resilience.

CountryMax pairs a 10-6-4 analysis with slow-release nutrition to support thicker turf and root development. Its organic lawn fertilizer is presented for residential and professional applications, making it relevant to buyers working on density, new lawn establishment, or grass recovery rather than simply seeking a quick color treatment.

The 10-6-4 formula is paired with time-release nutrition, so feeding is described as gradual and long-lasting. CountryMax says the fertilizer encourages vigorous root growth and grass plant multiplication, which can help establish new lawns and improve turf density and durability. Its additional description also points to resilience and recovery from drought stress. At 36 pounds, the granules suit buyers planning a substantial lawn-care application, though no coverage area is supplied in the product facts.

Skip it if you need a listed square-foot coverage figure before planning application; Espoma Turf-Tone Fall Winterizer specifies up to 5,000 square feet.

A fit for residential or professional users focused on root development, thicker turf, and gradual feeding. The 36-pound granule quantity is specified, but the supplied facts do not give a coverage area, so application planning needs another source.

Listed on Amazon as: CountryMax Organic Lawn Fertilizer 36 lb 10-6-4 Slow Release Formula

#8 · Best Fall Formula

8. Espoma Turf-Tone Winterizer

• Weight: 30 lb
• Form: Granules

Best for: Fall preparation for winter.

Why it ranks #8: Its 8-0-5 formula adds potassium for fall preparation and is intended to strengthen roots before winter dormancy across several listed grass types.

Extra potassium distinguishes Espoma Turf-Tone Fall Winterizer, an 8-0-5 natural and organic lawn food intended for autumn application. It is meant to strengthen turf before winter dormancy and help lawns recover from summer stress, making it a seasonal choice rather than an all-purpose year-round feeding plan.

The 8-0-5 analysis supplies extra potassium, which the product associates with recovery from summer stress and stronger turf before winter dormancy. Espoma lists it for all lawns, including fescue, bluegrass, ryegrass, St. Augustine, and zoysia, so the stated grass-type range is broad. Granules are applied in fall with a drop or broadcast spreader for even coverage. The product says it will not burn lawns or leach out of soil, and the 30-pound bag covers up to 5,000 square feet.

Skip it if you need fertilizer for newly seeded areas or new sod; Espoma Turf-Tone Lawn Starter is specified for those uses.

Best suited to lawn owners planning a fall application to prepare turf for winter and address summer stress. Its seasonal timing is the main fit boundary; choose a starter formula instead when establishing seed or sod.

Listed on Amazon as: Turf-Tone Fall Winterizer 8-0-5 Natural & Organic Lawn Food. Long Lasting Organic Nitrogen & Potassium for a Winter Strong Lawn. 30 lb. Bag Covers up to 5,000 Sq. Ft.

#9

9. Espoma Turf-Tone Lawn Starter

• Weight: 30 lb
• Form: Granules

Best for: Seed and sod establishment.

Why it ranks #9: This 4-6-3 starter fertilizer is specifically intended for newly seeded areas, overseeding, and new sod, with coverage up to 3,000 square feet.

Espoma Turf-Tone Lawn Starter is specifically aimed at newly seeded areas, overseeding, and new sod installations. Its 4-6-3 analysis combines long-lasting nitrogen and phosphorus with Bio-tone formula, giving buyers a starter-focused option for establishing new turf rather than routine maintenance feeding.

The 4-6-3 analysis includes phosphorus alongside nitrogen, and the product identifies both as part of its long-lasting starter nutrition. Bio-tone formula is another stated component, while the listed uses cover new seeding, overseeding, and new sod installation. Granules can be applied with a drop or broadcast spreader, and the instructions say it can be used anytime to help establish turf. Coverage is up to 3,000 square feet, making area planning important for larger projects.

Skip it if you are feeding an established lawn before winter; Espoma Turf-Tone Fall Winterizer is intended for fall preparation.

Choose this starter for new seed, overseeding, or sod work where the 4-6-3 analysis and spreader application suit the project. Its 3,000-square-foot coverage is the main area-planning boundary for larger establishment jobs.

Listed on Amazon as: Turf-Tone Lawn Starter Natural & Organic Starter Fertilizer. with Long Lasting, Nitrogen, Phosphorus and Our Bio-Tone Formula. 30 lb. Bag Covers up to 3,000 Sq. Ft.

#10

10. Down to Earth Bio-Turf

• Weight: 4 lb
• Form: Granules

Best for: Small organic lawn applications.

Why it ranks #10: The OMRI-listed 8-3-5 formula is a natural granular fertilizer, but its 4-pound box and broad garden-and-landscape use make it less straightforward for whole-lawn feeding.

OMRI listing for organic production sets Down to Earth Bio-Turf apart for buyers prioritizing a listed organic input. Its 8-3-5 granular formula targets deep root development, while nitrogen supports early-season growth and potassium is included to address temperature-change and drought stress.

Bio-Turf combines an 8-3-5 analysis with a stated emphasis on deep root development, which the product says can help reduce watering requirements. Nitrogen is described as supporting early-season growth, while extra potassium addresses seasonal stress from temperature changes and drought. The granules work with lawn spreaders, giving buyers a conventional spreading method. At four pounds, this package suits smaller applications or buyers who want a smaller quantity; the supplied facts do not state a coverage area.

Skip it if you need a large bag with specified lawn coverage; Espoma Turf-Tone Fall Winterizer lists 30 pounds and coverage up to 5,000 square feet.

Consider it for smaller lawn applications where OMRI listing, root development, and spreader use matter. The four-pound quantity is a practical boundary for area planning because the supplied product information does not specify square-foot coverage.

Listed on Amazon as: Down to Earth All Natural Fertilizers Organic Bio-Turf Lawn Food for Grass, Landscape and Ornamentals – Works with Lawn Spreaders 8-3-5, 4 lb