We Use CookiesWe use cookies to enhance the security, performance, functionality and for analytical and promotional activities. By continuing to browse this site you are agreeing to our privacy policy
Home
All Categories
Patio, Lawn & Garden
Gardening & Lawn Care
Organic Fertilizers

10 Best Organic Fertilizers 2025 in the United States

#1

Winner

9.7 score

Miracle-Gro Water Soluble All Purpose Plant Food, Plant Fertilizer for Indoor or Outdoor Plants, Roses, Flowers, Houseplants, Vegetables and Trees, 10 lb.

6%OFF

Miracle-Gro Water Soluble All Purpose Plant Food, Plant Fertilizer for Indoor or Outdoor Plants, Roses, Flowers, Houseplants, Vegetables and Trees, 10 lb.

Miracle-Gro

9.7 score

Check price

Miracle-Gro Water Soluble All Purpose Plant Food is a versatile, user-friendly fertilizer suitable for various plants, including indoor and outdoor plants, roses, flowers, houseplants, vegetables, and trees. With a significant 10 lb. container, it is designed to cover approximately 4,000 sq. ft. of garden area. This product claims to grow bigger, more beautiful plants compared to those unfed, thanks to its nutrient-rich formula that starts working instantly.

#2
9.4 score

Down to Earth Organic Vegetable Garden Fertilizer 4-4-4, 5 lb

12%OFF

Down to Earth Organic Vegetable Garden Fertilizer 4-4-4, 5 lb

Down To Earth All Natural Fertilizers

9.4 score

Check price

The Down to Earth Organic Vegetable Garden Fertilizer 4-4-4 is a well-rounded option for anyone looking to support their vegetable garden with natural, eco-friendly nutrients. Its balanced 4-4-4 NPK ratio makes it versatile, providing equal parts nitrogen, phosphorus, and potassium to promote strong roots, healthy foliage, and productive fruit development. The fertilizer is made from all-natural ingredients, ensuring that it is free from synthetic chemicals and is safe for beneficial insects, pollinators, pets, and the surrounding environment.

Rating
9.4
Nutrient Content (N-P-K Ratio)

Most important from
3422 reviews

Nutrient Content (N-P-K Ratio)
Recommended by horticulturalists, this product stands out for its solid nutrient content, contributing to healthy buds and blooms.
#3
9.1 score

Miracle-Gro Performance Organics All Purpose Plant Nutrition Granules - 2.5 lb., All-Purpose Plant Food for Vegetables, Flowers and Herbs, Feeds up to 240 sq. ft.

8%OFF

Miracle-Gro Performance Organics All Purpose Plant Nutrition Granules - 2.5 lb., All-Purpose Plant Food for Vegetables, Flowers and Herbs, Feeds up to 240 sq. ft.

Miracle-Gro

9.1 score

Check price

Miracle-Gro Performance Organics All Purpose Plant Nutrition Granules offer a convenient way to feed vegetables, flowers, and herbs with organic ingredients. The granules come in a shaker jug, making application simple—just sprinkle onto dry soil, mix lightly, and water. It starts working in about a week, which is fairly quick for organic fertilizers. The product covers up to 240 square feet and suggests reapplying every 4 to 6 weeks to keep plants well-nourished.

Rating
9.1
Nutrient Content (N-P-K Ratio)
Source of Organic Matter
Soil pH Compatibility

Most important from
2997 reviews

Nutrient Content (N-P-K Ratio)
Nutrients work effectively within weeks, promoting vibrant and robust plants.
Source of Organic Matter
Organic formulation prevents unhealthy soil buildup common with synthetic fertilizers.
Soil pH Compatibility
Ideal for maintaining healthy soil and plants without harsh chemicals.
Application Method
Easy to use with noticeable improvements in bloom size and flower quantity.

Top 10 Best Organic Fertilizers 2025 in the United States

#1

Winner

9.7 score

Slide 1Slide 2Slide 3Slide 4Slide 5

Miracle-Gro

Miracle-Gro Water Soluble All Purpose Plant Food, Plant Fertilizer for Indoor or Outdoor Plants, Roses, Flowers, Houseplants, Vegetables and Trees, 10 lb.

Release Rate: Instant
Application Method: Watering can or Garden Feeder

Check price

6% OFF

Chosen by 1316 this week

#2

9.4 score

Slide 1Slide 2Slide 3Slide 4Slide 5

Down To Earth All Natural Fertilizers

Down to Earth Organic Vegetable Garden Fertilizer 4-4-4, 5 lb

Nutrient Content (N-P-K Ratio): 4-4-4
Source of Organic Matter: all-natural
Release Rate: slow-release
Application Method: granular, apply directly or mix

Check price

12% OFF
#3

9.1 score

Slide 1Slide 2Slide 3Slide 4Slide 5

Miracle-Gro

Miracle-Gro Performance Organics All Purpose Plant Nutrition Granules - 2.5 lb., All-Purpose Plant Food for Vegetables, Flowers and Herbs, Feeds up to 240 sq. ft.

Release Rate: starts working in about a week
Application Method: sprinkle on dry soil, mix, water

Check price

8% OFF
#4

8.8 score

Slide 1Slide 2Slide 3Slide 4Slide 5

Miracle-Gro

Miracle-Gro Performance Organics Edibles Plant Nutrition - Organic Plant Food Feeds Instantly, for Tomatoes, Vegetables, Herbs and Fruits, Promotes a Bountiful Harvest, 1 lb.

Check price

20% OFF
#5

8.5 score

Slide 1Slide 2Slide 3Slide 4Slide 5

Dr. Earth

Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer Poly Bag

Source of Organic Matter: 100% organic, no GMOs or sludge
Release Rate: feeds plants gradually over months
Application Method: granules, ensure even spreading

Check price

45% OFF

Related Products

#6

8.2 score

Slide 1Slide 2Slide 3Slide 4Slide 5

Espoma

Espoma Organic Plant-Tone 5-3-3 Natural & Organic All Purpose Plant Food; 4 lb. Bag; The Original Organic Fertilizer for All Flowers, Vegetables, Trees, and Shrubs. - Pack of 2

Nutrient Content (N-P-K Ratio): 5-3-3
Source of Organic Matter: natural and organic ingredients
Release Rate: slow-release
Application Method: apply to soil and water thoroughly

Check price

10% OFF
#7

7.9 score

Slide 1Slide 2Slide 3Slide 4Slide 5

Espoma

Espoma Organic 8 Ounce Concentrated Indoor! Plant Food - Indoor Plant Fertilizer for Large & Small Plants Like Pothos, Fiddle Leaf Fig, Monstera, Snake & Palms

Check price

67% OFF
#8

7.6 score

Slide 1Slide 2Slide 3Slide 4Slide 5

Down To Earth All Natural Fertilizers

Down To Earth All Natural Fertilizers Organic All Purpose Tomato & Vegetable Mix 4-6-2, 5 lb

Check price

#9

7.3 score

Slide 1Slide 2Slide 3Slide 4Slide 5

Espoma

Espoma Organic Bloom! 16-Ounce Concentrated Plant Food – Plant Fertilizer and Bloom Booster for All Flowering Plants. Promotes Vigorous Growth and Blooming

Check price

#10

7.0 score

Slide 1Slide 2Slide 3Slide 4Slide 5

Espoma

Espoma Organic Grow! Liquid Concentrate Plant Food - All Purpose Fertilizer for Indoor & Outdoor Plants. for Organic Gardening. 16oz Bottle Pack of one

Check price

13% OFF
How do we rank products for you?

Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.

headphones-stars

Buying Guide for the Best Organic Fertilizers

Choosing the right organic fertilizer for your garden or farm is crucial for ensuring healthy plant growth and soil fertility. Organic fertilizers are derived from natural sources and provide essential nutrients to plants while improving soil structure and promoting beneficial microbial activity. When selecting an organic fertilizer, it's important to consider the specific needs of your plants, the condition of your soil, and the type of crops you are growing. Here are some key specifications to help you make an informed decision.
Nutrient Content (N-P-K Ratio)The N-P-K ratio represents the percentage of nitrogen (N), phosphorus (P), and potassium (K) in the fertilizer. Nitrogen promotes leafy growth, phosphorus supports root development and flowering, and potassium enhances overall plant health and disease resistance. For leafy vegetables, a higher nitrogen content is beneficial, while flowering plants and root crops may require more phosphorus and potassium. Understanding the specific nutrient needs of your plants will help you choose the right N-P-K ratio.
Source of Organic MatterOrganic fertilizers can be derived from various sources such as compost, manure, bone meal, blood meal, and seaweed. Each source has its own nutrient profile and benefits. For example, compost is excellent for improving soil structure and microbial activity, while bone meal is rich in phosphorus. Consider the specific benefits of each source and how they align with your gardening goals. If you aim to improve soil health, compost or manure might be ideal, whereas bone meal or blood meal could be better for boosting specific nutrients.
Release RateThe release rate of nutrients from organic fertilizers can vary. Some fertilizers provide a slow, steady release of nutrients over time, while others offer a quicker nutrient boost. Slow-release fertilizers, such as compost and manure, are ideal for long-term soil health and sustained plant growth. Quick-release options, like fish emulsion or liquid seaweed, are useful for addressing immediate nutrient deficiencies. Consider whether your plants need a quick nutrient boost or a steady supply over the growing season.
Soil pH CompatibilityDifferent organic fertilizers can affect the pH level of your soil. Some fertilizers, like lime, can raise soil pH, making it more alkaline, while others, like sulfur, can lower it, making the soil more acidic. It's important to test your soil's pH before choosing a fertilizer to ensure compatibility. Most plants prefer a slightly acidic to neutral pH (6.0-7.0). If your soil pH is outside this range, select a fertilizer that will help bring it closer to the optimal level for your plants.
Application MethodOrganic fertilizers come in various forms, including granular, liquid, and powder. Granular fertilizers are easy to apply and provide a slow release of nutrients. Liquid fertilizers are quickly absorbed by plants and are ideal for foliar feeding or addressing nutrient deficiencies. Powdered fertilizers can be mixed with water or applied directly to the soil. Consider the ease of application and the specific needs of your plants when choosing the form of fertilizer. For example, liquid fertilizers are great for container plants, while granular options are suitable for larger garden beds.

FAQ