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Organic Garden Fertilizers

10 Best Organic Garden Fertilizers 2025 in the United States

#1

Winner

9.7 score

Miracle-Gro Shake 'N Feed All Purpose Plant Food, For In-Ground and Container Plants, Feeds for up to 3 Months, 4.5 lbs.

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Miracle-Gro Shake 'N Feed All Purpose Plant Food, For In-Ground and Container Plants, Feeds for up to 3 Months, 4.5 lbs.

Miracle-Gro

9.7 score

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The Miracle-Gro Shake 'N Feed All Purpose Plant Food is a versatile product suitable for a variety of plants, both in-ground and container-based. Its strength lies in its ability to feed plants for up to 3 months, which reduces the frequency of reapplication and ensures consistent nourishment. The inclusion of vital micronutrients helps in producing stronger and more vibrant plants, which is a major plus for any gardener aiming for a healthy garden.

Rating
9.7
Chosen by1,416
Soil Condition
Application Method

Most important from
15095 reviews

Soil Condition
This fertilizer works wonders, especially in challenging conditions like a balcony garden.
Application Method
Easy to apply and ensures healthy plant growth, making it a great value for the price.
#2
9.4 score

Jobe’s Organics Granular Garden Fertilizer, Easy Plant Care Fertilizer for Vegetable Gardens and Tomato Plants, 16 lbs Bag

Jobe’s Organics Granular Garden Fertilizer, Easy Plant Care Fertilizer for Vegetable Gardens and Tomato Plants, 16 lbs Bag

Jobe's Organics

9.4 score

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Jobe’s Organics Granular Garden Fertilizer is designed specifically for vegetable gardens and tomato plants. It comes in a 16 lbs bag and features a 2-5-3 NPK ratio, which means it has a balanced mix of nitrogen, phosphorus, and potassium suitable for promoting plant growth, root development, and vibrant foliage. The fertilizer is OMRI listed, highlighting its compliance with organic gardening standards and absence of synthetic chemicals, making it an excellent choice for eco-conscious gardeners.

Rating
9.4
Source of Nutrients
Release Rate
Application Method

Most important from
7306 reviews

Source of Nutrients
Organic and safe, giving peace of mind for use around pets and in eco-friendly gardens.
Release Rate
Immediate results with larger, more vibrant blooms and healthier plants.
Application Method
Easy to use with straightforward application and a resealable bag for freshness.
#3
9.2 score

FoxFarm Fertilizer Soil Trio Liquid Nutrient: Tiger Bloom, Grow Big, Big Bloom Bottles - (Pack of 3-1 Pint)

FoxFarm Fertilizer Soil Trio Liquid Nutrient: Tiger Bloom, Grow Big, Big Bloom Bottles - (Pack of 3-1 Pint)

FoxFarm

9.2 score

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The FoxFarm Fertilizer Soil Trio, which includes Tiger Bloom, Grow Big, and Big Bloom, is designed to support robust plant growth and development. The trio provides a well-rounded nutrient profile suitable for various plants, with each product serving specific growth phases. Grow Big focuses on vegetative growth, Tiger Bloom aids in flowering and fruiting with its higher phosphorus content, and Big Bloom can be used consistently for plant health.

Rating
9.2
Source of Nutrients
Release Rate
Application Method

Most important from
23220 reviews

Source of Nutrients
These nutrients were purchased for indoor plants to grow during extreme weather. They are very lush and thriving thanks to these plant vitamins and minerals.
Release Rate
Very little goes a long way and I only have to feed them about twice a week. This supply will last more than a whole season.
Application Method
Easy to mix and works great for me on my plants.

Top 10 Best Organic Garden Fertilizers 2025 in the United States

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Slide 1

Gardenera

Premium 4-12-0 Organic Bone Meal Fertilizer by Gardenera - 20 Quart - All-Natural Plant Food Source of Nitrogen and Phosphorus for Bulbs, Gardens, Potted Plants, Trees, and Shrubs

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#1

Winner

9.7 score

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Miracle-Gro

Miracle-Gro Shake 'N Feed All Purpose Plant Food, For In-Ground and Container Plants, Feeds for up to 3 Months, 4.5 lbs.

Source of Nutrients: natural ingredients
Release Rate: up to 3 months
Plant Type: flowers, vegetables, herbs
Application Method: granule form

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25% OFF

Chosen by 1416 this week

Sponsored

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Gardenera

Premium 4-12-0 Organic Bone Meal Fertilizer by Gardenera - 20 Quart - All-Natural Plant Food Source of Nitrogen and Phosphorus for Bulbs, Gardens, Potted Plants, Trees, and Shrubs

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#2

9.4 score

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Jobe's Organics

Jobe’s Organics Granular Garden Fertilizer, Easy Plant Care Fertilizer for Vegetable Gardens and Tomato Plants, 16 lbs Bag

N-P-K Ratio: 2-5-3
Source of Nutrients: OMRI listed, organic
Release Rate: Every 4-6 weeks
Soil Condition: Improves soil condition
Plant Type: Vegetable and tomato
Application Method: Granular

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#3

9.2 score

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FoxFarm

FoxFarm Fertilizer Soil Trio Liquid Nutrient: Tiger Bloom, Grow Big, Big Bloom Bottles - (Pack of 3-1 Pint)

Source of Nutrients: OMRI listed, CDFA certified
Soil Condition: Organic
Plant Type: Various plants
Application Method: Mix with water, apply

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#4

8.9 score

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FoxFarm

FoxFarm - Big Bloom Plant Food, Liquid Fertilizer Concentrate for Flowers, Fruits, and Vegetables, All Purpose Plant Fertilizer for Indoor & Outdoor Potted Plants, NPK 0.01-0.03-0.7 (Pint)

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#5

8.6 score

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Miracle-Gro

Miracle-Gro Shake 'N Feed Tomato, Fruit and Vegetable Plant Food, For In-Ground and Container Plants, Feeds up to 3 Months, 4.5 lbs.

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23% OFF

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#6

8.3 score

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Jobe's Organics

Jobe’s Garden Fertilizer Spikes, Organic Fertilizer for Azaleas, Camellias, Rhododendrons, and Other Acid Loving Plants, 10 Count

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38% OFF
#7

8.0 score

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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

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17% OFF
#8

7.8 score

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Jobe's Organics

Jobe’s Organics Garden Fertilizer Spikes, Easy Plant Care Fertilizer for Fruit and Citrus Plants and Trees, 6 Count

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14% OFF
#9

7.5 score

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Jobe's Organics

Jobe’s Organics All Purpose Fertilizer Spikes, Easy Plant Care Fertilizer for Vegetables, Flowers, Shrubs, Trees, and Plants, 50 Count

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#10

7.2 score

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Espoma

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

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8% OFF
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Buying Guide for the Best Organic Garden Fertilizers

Choosing the right organic garden fertilizer is crucial for the health and productivity of your plants. Organic fertilizers are derived from natural sources and help improve soil structure, provide essential nutrients, and promote 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 garden you have. Understanding the key specifications of organic fertilizers will help you make an informed decision and ensure your garden thrives.
N-P-K RatioThe 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. For leafy vegetables, a higher nitrogen content (e.g., 10-5-5) is beneficial. For flowering plants and root crops, a balanced or higher phosphorus and potassium ratio (e.g., 5-10-10) is ideal. Choose a fertilizer with an N-P-K ratio that matches the specific needs of your plants.
Source of NutrientsOrganic fertilizers can be derived from various natural sources such as compost, manure, bone meal, blood meal, and seaweed. Each source has different nutrient profiles and benefits. For example, compost is a well-rounded option that improves soil structure, while bone meal is high in phosphorus, making it great for root development. Consider the nutrient needs of your plants and the benefits of each source when selecting a fertilizer.
Release RateThe release rate of a fertilizer indicates how quickly the nutrients become available to plants. Slow-release fertilizers provide a steady supply of nutrients over time, which is ideal for long-term plant health and reducing the risk of nutrient burn. Fast-release fertilizers offer immediate nutrient availability, which can be beneficial for quick growth spurts or correcting nutrient deficiencies. Choose a release rate that aligns with your gardening goals and the specific needs of your plants.
Soil ConditionThe condition of your soil plays a significant role in determining the type of fertilizer you need. Conduct a soil test to identify any nutrient deficiencies or imbalances. For sandy soils, which drain quickly, a fertilizer with higher organic matter content can help retain moisture and nutrients. For clay soils, which retain water, a fertilizer that improves aeration and drainage is beneficial. Tailor your fertilizer choice to address the specific needs of your soil.
Plant TypeDifferent plants have varying nutrient requirements. Vegetables, flowers, shrubs, and trees all have unique needs. For example, fruiting plants like tomatoes and peppers benefit from higher phosphorus levels, while leafy greens like lettuce and spinach thrive with more nitrogen. Research the specific nutrient needs of the plants in your garden and choose a fertilizer that caters to those requirements.
Application MethodOrganic fertilizers come in various forms, including granular, liquid, and powder. Granular fertilizers are easy to apply and provide a slow, steady release of nutrients. Liquid fertilizers offer quick nutrient absorption and are ideal for foliar feeding or addressing immediate deficiencies. Powdered fertilizers can be mixed with water for a customizable application. Consider the ease of use and the specific needs of your garden when selecting an application method.

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