Best Natural Fertilizer For Grass – Top Picks & Guide

Imagine a lawn so green and lush it looks like a velvet carpet. What if you could achieve that vibrant look without harsh chemicals? Many of us dream of a beautiful lawn, but the choices for fertilizer can be overwhelming. You see bags with big promises, but you also worry about what those chemicals might do to your family, pets, and the environment. It’s a common struggle to find a fertilizer that works well and is also good for the earth.

This is where natural fertilizers come in! They offer a way to feed your grass the nutrients it needs to thrive, using gentle ingredients found in nature. If you’re tired of the confusion and want a healthier, more sustainable way to care for your lawn, you’ve come to the right place. Keep reading to discover the best natural fertilizers for grass, understand why they are a smart choice, and learn how to easily bring your lawn back to life.

Top Natural Fertilizer For Grass Recommendations

SaleNo. 1
O.M. Scott & Sons Natural Grass Food, 12.72 lbs. | Food for Lawns, Fertilizes for up to 10 Weeks, Covers 2,000 sq. ft.
  • NATURAL LAWN FERTILIZER: O.M. Scott & Sons Natural Grass Food is crafted with premium nutrient sources found in nature, designed to help you strengthen your grass from the roots up so you can go hard on your yard
  • FEEDS UP TO 10 WEEKS: This natural lawn food begins feeding your grass immediately (when you water immediately after application) and continues feeding for up to 10 weeks
  • SAFE FOR USE AROUND KIDS & PETS: Packed with essential nutrients, this lawn food for grass formula doesn't contain added artificial ingredients or pesticides, and it's safe for use around people and pets (when used as directed)
  • COVERAGE: Safe for use on all grass types (including yours) when used as directed; one 12.72 lb. bag covers 2,000 sq. ft.
  • RECYCLABLE PACKAGING: O.M. Scott & Sons products are packaged in a recyclable paper bag; apply the product on your yard then toss the bag in your curbside recycling bin where available
No. 2
Scotts Natural Lawn Food, Lawn Fertilizer, For All Grass Types, Apply Any Season, OMRI Listed, Covers 4,000 sq. ft., 29.1 lbs.
  • Scotts Natural Lawn Food builds a thick, green lawn - naturally
  • This lawn care product is safe to walk on immediately after application and can be used around kids and pets
  • This grass fertilizer may be applied during any season, up to 4 times per year (see label for details)
  • Apply this lawn fertilizer to any grass type using a Scotts drop or rotary spreader
  • This 29.1 lb. bag of Scotts Natural Lawn Food covers up to 4,000 sq. ft. of lawn
No. 3
Milorganite 6-4-0 Fertilizer and Feeding Tips Brochure Bundle, 32lb | All-purpose slow-release nitrogen for lawns, flowers and gardens; guide covers seasonal timing and spreader settings
  • Bundle of 2 items: One 32 lb bag of Milorganite 6-4-0 fertilizer and one printed feeding and spreader tips brochure with seasonal application guidance
  • Low-salt formula: Milorganite contains virtually no salts, helping avoid streaks, stripes, and fertilizer burn, even in hot or dry conditions
  • Iron for greening: Its organically complex iron helps produce a deep green lawn without staining concrete like iron salts in some synthetic fertilizers
  • Slow-release feeding: Provides nutrients for up to 8–10 weeks, does not need to be watered in after application, and covers up to 2,500 sq ft per 32 lb bag
  • All-purpose use: Suitable for lawns, flowers, shrubs, trees, and fruit and vegetable gardens, supporting strong roots and sturdier stems
No. 4
Purely Organic Products Lawn Food 10-0-2, 15 LB (Covers 3,000 Square Feet)
  • Promotes Lush Green Turf Grass. Will Not Burn Your Lawn.
  • Plant Based Formula with Distillers Grains & Soy. No Harsh Chemicals, No Manure & No Smelly Biosolids.
  • Convenient, Family & Pet Friendly. No Restrictions on Re-Entry Time After Application.
  • 10-0-2 Formula with No Phosphorus Meets Town & Municipality Regulations Restricting Phosphate Use.
No. 5
O.M. Scott & Sons Natural Grass Food, 12.72 lbs. (2-Pack)
  • NATURAL LAWN FERTILIZER: O.M. Scott & Sons Natural Grass Food is crafted with premium nutrient sources found in nature, designed to help you strengthen your grass from the roots up so you can go hard on your yard
  • FEEDS UP TO 10 WEEKS: This natural lawn food begins feeding your grass immediately (when you water immediately after application) and continues feeding for up to 10 weeks
  • SAFE FOR USE AROUND KIDS & PETS: Packed with essential nutrients, this lawn food for grass formula doesn't contain added artificial ingredients or pesticides, and it's safe for use around people and pets (when used as directed)
  • COVERAGE: Safe for use on all grass types (including yours) when used as directed; this bundle contains two 12.72 lb. bags; each bag covers 2,000 sq. ft. for a total coverage of 4,000 sq. ft.
  • RECYCLABLE PACKAGING: O.M. Scott & Sons products are packaged in a recyclable paper bag; apply the product on your yard then toss the bag in your curbside recycling bin where available
No. 6
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
  • Down to Earth Bio-Turf is a 4 pound box of fertilizer with 8-3-5 formula and is listed by the Organic Materials Review Institute (OMRI) for use in organic production
  • Entirely natural granular lawn fertilizer designed to encourage deep root development to help reduce watering requirements
  • Nitrogen-rich formula boosts early season growth while its extra Potassium reduces seasonal stress due to temperature change and drought
  • Ideal for heavy feeding garden vegetables like corn, tomatoes and leafy greens
  • Derived from: Hydrolyzed Feather Meal, Blood Meal, Meat Meal, Bone Meal and Langbeinite
No. 7
Advanced 16-4-8 Balanced NPK - Lawn Food Quality Liquid Fertilizer - Spring & Summer Concentrated Spray - Any Grass Type - Simple Lawn Solutions (32 Ounce)
  • Complete NPK Lawn Food: 16-4-8 is the perfect blend of key macronutrients. This lawn liquid food turf fertilizer also contains Seaweed & Fish.
  • Contains High Quality Feed Grade Ingredients: Nourish your lawn with pure liquid Nutrients in a ready to use sprayer
  • Easy To Use: Designed to be easily applied. This complete Nitrogen, Phosphate and Potash formula gives your grass greening & growth while providing nutrients for lush lawns
  • All Grass types: Including Bermuda, St. Augustine, Zoysia, Buffalo, Centipede, Florida Palmetto, Bahia, Fescue, Ryegrass & Kentucky Bluegrass
  • Produced In The United States: 16-4-8 is manufactured in the United States of America, by a family owned business with 25 years of former experience in the commercial professional turf industry.
SaleNo. 8
Scotts Turf Builder WinterGuard Fall Lawn Food, 10 lbs. | Lawn Fertilizer for All Grass Types, Covers 4,000 sq. ft., Autumn Lawn Care
  • FALL LAWN FERTILIZER: Scotts Turf Builder WinterGuard Fall Lawn Food is a fertilizer that builds strong, deep grass roots for a better lawn next spring
  • SUMMER LAWN RECOVERY: Our fertilizer provides nutrients lawns need to help recover from summer heat, drought, and regular activity while preparing roots to take on harsh winter conditions
  • APPLY IN FALL TO PREPARE YOUR LAWN FOR WINTER: Apply this grass fertilizer to a wet or dry lawn in the fall
  • USE ON ANY GRASS TYPE: This lawn care product is a lawn food for grass that can be used on any grass type
  • SMALL LAWN COVERAGE: One 10 lb. bag of Scotts Turf Builder WinterGuard Fall Lawn Food covers 4,000 sq. ft.

Choosing the Best Natural Fertilizer for Your Lawn

Want a greener, healthier lawn without harsh chemicals? Natural fertilizers are the answer! They feed your grass the good stuff, improve your soil, and are kind to the environment. This guide will help you pick the perfect natural fertilizer for your lawn.

Key Features to Look For

When you shop for natural fertilizer, keep these important features in mind.

Nutrient Content

  • N-P-K Ratio: Look for three numbers on the bag: Nitrogen (N), Phosphorus (P), and Potassium (K). Nitrogen makes grass green and grow strong. Phosphorus helps roots grow. Potassium keeps grass healthy and can make it tougher against diseases and drought. A balanced ratio is often good, but your lawn might need more of one nutrient than another. You can test your soil to find out.
  • Micronutrients: These are nutrients your grass needs in small amounts, like iron and calcium. Good natural fertilizers include these to give your lawn a complete diet.

Release Rate

  • Slow-Release: Most natural fertilizers work slowly. This means they feed your lawn over a longer period, usually 8-12 weeks. This prevents sudden growth spurts and reduces the chance of burning your grass. It also means you don’t have to fertilize as often.

Formulation

  • Granular: This is the most common type. Granules are easy to spread with a spreader. They break down over time, releasing nutrients.
  • Liquid: Liquid fertilizers are absorbed by the grass quickly. They are good for a fast green-up but might need more frequent application.

Important Materials in Natural Fertilizers

Natural fertilizers get their power from organic sources. Here are some common ingredients:

Plant-Based Materials

  • Compost: This is decomposed organic matter like kitchen scraps and yard waste. It’s packed with nutrients and great for soil health.
  • Alfalfa Meal: Made from dried, ground alfalfa plants, it’s rich in nitrogen and other nutrients.
  • Corn Gluten Meal: This is a byproduct of corn processing. It’s a good source of nitrogen and can also help prevent weed seeds from sprouting.

Animal-Based Materials

  • Manure (Composted): Well-composted animal manure adds nutrients and improves soil structure. Make sure it’s composted to avoid burning your lawn or introducing weed seeds.
  • Bone Meal: A good source of phosphorus for strong root development.
  • Blood Meal: High in nitrogen for quick greening.
  • Feather Meal: Releases nitrogen slowly and is a good source of protein.

Factors That Improve or Reduce Quality

The quality of a natural fertilizer depends on a few things.

What Makes It Better

  • Source Quality: Fertilizers made from high-quality, clean organic materials will be more effective. For example, compost made from a variety of materials is usually better than compost from just one source.
  • Processing: How the materials are processed matters. Proper composting breaks down materials safely and makes nutrients available to your grass.
  • Added Beneficial Microbes: Some fertilizers include beneficial bacteria or fungi. These microbes help break down organic matter and make nutrients easier for grass to absorb. They also improve soil health.

What Can Make It Worse

  • Contaminants: If organic materials are not sourced carefully, they can contain weed seeds, pathogens, or heavy metals. This can harm your lawn or be unsafe.
  • Poor Composting: If manure or other materials are not composted properly, they can burn your lawn or smell bad.
  • Low Nutrient Content: Some products might not have enough of the essential nutrients your grass needs. Always check the N-P-K ratio.

User Experience and Use Cases

Most people find natural fertilizers easy to use. They are a great choice for many situations.

Ease of Use

  • Spreading: Granular fertilizers are applied with a spreader, just like synthetic ones. Follow the instructions on the bag for the correct amount.
  • Watering: After applying granular fertilizer, watering your lawn helps the nutrients start to work.
  • Safety: Natural fertilizers are generally safer for children and pets than synthetic ones. You usually don’t have to keep them off the lawn for long periods.

When to Use Natural Fertilizer

  • Spring Greening: Use a nitrogen-rich fertilizer in spring to wake up your lawn after winter.
  • Summer Health: A balanced fertilizer in late spring or early summer helps your lawn stay strong during hot weather.
  • Fall Root Development: Fertilize in fall with a phosphorus-rich product to help roots grow strong before winter.
  • New Lawns: Natural fertilizers help establish healthy soil for new grass seed or sod.
  • Organic Gardening: If you’re committed to an organic lifestyle, natural fertilizers fit perfectly with your goals.

Frequently Asked Questions (FAQ) about Natural Fertilizer for Grass

Q: What is natural fertilizer for grass?

A: Natural fertilizer for grass is made from organic materials like plants, animal byproducts, and compost. It feeds your lawn and improves the soil naturally.

Q: How is natural fertilizer different from chemical fertilizer?

A: Chemical fertilizers use synthetic ingredients that provide nutrients quickly but can harm soil over time. Natural fertilizers release nutrients slowly, build healthy soil, and are better for the environment.

Q: Will natural fertilizer make my grass grow too fast?

A: No. Most natural fertilizers release nutrients slowly. This provides steady growth and prevents your grass from growing too quickly and needing constant mowing.

Q: How often should I use natural fertilizer?

A: You usually need to fertilize 2-4 times a year. The best times are spring, late spring/early summer, and fall. Check the product label for specific advice.

Q: Can I use natural fertilizer if I have pets or children?

A: Yes. Natural fertilizers are generally safe for pets and children. You don’t usually need to keep them off the lawn for long periods after application.

Q: How do I apply natural fertilizer?

A: Granular natural fertilizers are applied with a lawn spreader. Liquid ones are usually mixed with water and applied with a sprayer. Always follow the instructions on the product label.

Q: How long does it take to see results from natural fertilizer?

A: You might see some greening within a week or two. However, the real benefits, like improved soil health and stronger grass, take longer to develop, often over several months.

Q: What does the N-P-K ratio mean on a natural fertilizer bag?

A: N-P-K stands for Nitrogen, Phosphorus, and Potassium. Nitrogen makes grass green and grow. Phosphorus helps roots. Potassium keeps grass healthy and strong.

Q: Is natural fertilizer good for the soil?

A: Yes, natural fertilizers are excellent for soil. They add organic matter, improve soil structure, help retain moisture, and feed beneficial microorganisms.

Q: Where can I buy natural fertilizer for my grass?

A: You can find natural fertilizers at garden centers, hardware stores, and online retailers. Look for brands that clearly state they are organic or natural.