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What Are The Best Organic Fertilizers in 2025

Unlocking Nature’s Potential: A Comprehensive Guide to Choosing the Best Organic Fertilizers for Thriving Plants In the realm of plant care supplies, selecting the right organic fertilizer is crucial for maximizing growth and enhancing soil health. With an array of options available, it’s essential to understand key decision factors such as nutrient content, microbial activity, and application methods. This guide delves into the best organic fertilizers, highlighting their unique benefits—from boosting microbial ecosystems to providing slow-release nutrients that promote long-term plant vitality. Whether you're cultivating a vibrant vegetable garden or nurturing ornamental plants, knowing how to read labels and assess compatibility with your specific soil type can make all the difference. We’ll explore top-rated products, their formulations, and optimal usage strategies to help you achieve a flourishing green space. By focusing on sustainable practices and eco-friendly solutions, this resource positions you to make informed choices that benefit both your plants and the environment. Discover the transformative power of organic fertilizers and elevate your gardening experience today!

1

Unco Industries Wiggle Worm Soil Builder Earthworm Castings Organic Fertilizer

Why We Love It

Reviewers and gardening enthusiasts rave about Unco Industries Wiggle Worm Soil Builder. They love that it's odor-free, making it pleasant to use, and that it's safe for their pets and kids. Users have noticed significant improvements in their plant growth, attributing it to the rich nutrients provided by this fertilizer. The fact that it's naturally processed is a huge bonus for those aiming for organic gardening.

Pros

  • Odor-free
  • Non-toxic
  • Promotes healthy, vigorous plant growth

Cons

  • Could be considered pricey
  • Packaging could be improved

Odor-free organic fertilizer processed from earthworm castings.

Wiggle Worm Soil Builder is an organic fertilizer made from earthworm castings. It is completely odor-free and non-toxic, making it safe for all plants. It is rich in essential nutrients and microorganisms, promoting healthier, more vigorous, and abundant plants. The fertilizer is naturally processed and is safe to use around pets and children. It provides a multitude of benefits, including improved soil structure, increased plant growth, and enhanced nutrient uptake.

2

Jobe's Organics Fruit & Citrus Fertilizer

Jobe's Organics Fruit & Citrus Fertilizer
Buy Now $12.99

Why We Love It

Users rave about how well this product works for their fruit and citrus trees, often reporting increased yield and healthier plants. The fact that it's organic and environmentally friendly is another major plus for many customers. Additionally, many reviews mention that it's easy to apply and doesn't have an overpowering smell.

Pros

  • Fast-acting
  • Improves soil condition
  • Helps plants resist disease and insects

Cons

  • May attract animals
  • Not suitable for all plant types

Organic granular fertilizer for fruits and citrus trees

Jobe's Organics Fruit & Citrus Fertilizer is a fast-acting granular fertilizer. Its organic formula is enhanced with Jobe's Biozome to improve the condition of the soil and the health and longevity of plants. It is designed to increase root mass and help your plants resist disease and insects.

3

Unco Industries Wiggle Worm Soil Builder Earthworm Castings Organic Fertilizer

Unco Industries Wiggle Worm Soil Builder Earthworm Castings Organic Fertilizer
Buy Now $33.97

Why We Love It

Customers consistently praise this product for its effectiveness in promoting plant growth. Many love the fact that it's odor-free and non-toxic, making it safe to use around children and pets. Users also appreciate its versatility, noting that it's suitable for a wide range of plants.

Pros

  • Odor-free
  • Non-toxic
  • Versatile

Cons

  • Packaging may be inconsistent
  • May not be suitable for all plants

Organic earthworm castings fertilizer for soil improvement

The Wiggle Worm Soil Builder from Unco Industries is an organic fertilizer made from earthworm castings. It is odor-free and non-toxic, making it safe for use around children and pets. This product is great for houseplants, vegetables, flowers and more, helping to enhance plant growth and yield.

4

Espoma Organic Plant-tone Plant Food

Espoma Organic Plant-tone Plant Food
Buy Now $34.97

Why We Love It

This product is popular for its all-purpose nature, meaning it can be used on any plant type. Users love the slow-release nitrogen feature, which promotes sustained growth over time. Many reviews also highlight that it's safe to use around pets and children, making it a top choice for families.

Pros

  • All-purpose
  • Slow-release nitrogen
  • Safe for people and pets

Cons

  • May attract pests
  • Smell may be too strong for some

All-purpose organic plant food for all plant types

Espoma's Organic Plant-tone is an all-purpose plant food which is rich in natural organics. It is formulated to feed all plants in gardens and landscapes. Its slow-release nitrogen is great for promoting growth and greening, and it's safe for people, pets, and the environment.

5

Neptune's Harvest Organic Hydrolized Fish & Seaweed Fertilizer

Buy Now $93.00

Why We Love It

Gardeners and reviewers love Neptune's Harvest Organic Hydrolized Fish & Seaweed Fertilizer for its high-quality ingredients and the positive effects on their plants. They've noted improved plant color, blooming, and root development. Users also appreciate its ability to help plants thrive under harsh conditions. While the strong fishy smell is a common complaint, most find that the benefits outweigh this minor inconvenience.

Pros

  • High-quality ingredients
  • Enhances plant stress response
  • Promotes blooming and root development

Cons

  • Strong fishy odor
  • Can attract insects and animals

Organic fish and seaweed-based fertilizer for enhanced plant growth.

Neptune's Harvest Organic Hydrolized Fish & Seaweed Fertilizer is a unique blend of fish hydrolysate and seaweed, providing a perfect blend of nitrogen, phosphorus, potash, and micro-nutrients. This organic fertilizer increases plant vigor and acclimates plants to harsh conditions by enhancing their natural stress response. It helps with plant color, blooming, and root development. The fertilizer is safe for pets and humans.

6

Jobe's Organics 09524 Purpose Granular Fertilizer

Buy Now $14.00

Why We Love It

Reviewers and users love Jobe's Organics 09524 Purpose Granular Fertilizer for its all-purpose capabilities. The inclusion of Jobe's Biozome is a standout feature, with users noting improved soil quality and plant growth. They also appreciate that it is fast-acting, providing immediate benefits to their plants. Some users mention that it can attract pests, but overall, the reviews are overwhelmingly positive.

Pros

  • All-purpose
  • Improves soil quality
  • Contains Biozome

Cons

  • May attract pests
  • Packaging could be improved

All-purpose granular fertilizer with Biozome technology.

Jobe's Organics 09524 Purpose Granular Fertilizer is an all-purpose organic fertilizer. It contains Jobe's Biozome, a unique and proprietary blend of beneficial microorganisms Archaea, Mycorrhizal fungi, and healthy bacteria, which improves the long-term soil quality of your garden, promotes plant growth, and helps resist disease and insects. The fertilizer is easy to apply and is fast-acting, providing immediate nourishment to plants.

7

Fox Farm Liquid Nutrient Trio Soil Formula: Big Bloom, Grow Big, Tiger Bloom

Buy Now $66.00

Why We Love It

Users and reviewers love the Fox Farm Liquid Nutrient Trio Soil Formula for its comprehensive three-stage system. They appreciate the attention to different aspects of plant growth, with each fertilizer promoting a distinct phase. Many users have seen significant improvements in their plants' health and productivity. Some mention that measuring the correct amounts can be a bit tricky, but overall, they regard this product as a worthy investment.

Pros

  • Three-stage system
  • Promotes different aspects of plant growth
  • Easy to use

Cons

  • Pricey
  • Measuring amounts can be tricky

Three-stage liquid fertilizer set for comprehensive plant nourishment.

Fox Farm Liquid Nutrient Trio Soil Formula - Big Bloom, Grow Big, and Tiger Bloom - is a set of three organic liquid fertilizers designed to provide comprehensive nourishment to plants at different stages of growth. Big Bloom promotes flowering, Grow Big boosts vegetative growth, and Tiger Bloom is for the first signs of flowering. These fertilizers are easy to use and are suitable for all types of plants.

Product Comparison

Compare features across all products in this category

6 Features 3 Products Updated Oct 03, 2025
Product Organic Formula Price Application Type Key Ingredients Safety for Pets and Children Plant Type Suitability
2 Jobe's Organics Fruit & Citrus Fertilizer
Yes $12.99 Granular Enhanced with Jobe's Biozome Yes, but may attract animals Fruits and citrus trees
3 Unco Industries Wiggle Worm Soil Builder Earthworm Castings Organic Fertilizer
Yes $33.97 Castings Earthworm castings Yes, odor-free and non-toxic Houseplants, vegetables, flowers, and more
4 Espoma Organic Plant-tone Plant Food
Yes $34.97 Granular Rich in natural organics Yes, safe for people and pets All plant types
2

Jobe's Organics Fruit & Citrus Fertilizer

Organic Formula
Yes
Price
$12.99
Application Type
Granular
Key Ingredients
Enhanced with Jobe's Biozome
Safety for Pets and Children
Yes, but may attract animals
Plant Type Suitability
Fruits and citrus trees
3

Unco Industries Wiggle Worm Soil Builder Earthworm Castings Organic Fertilizer

Organic Formula
Yes
Price
$33.97
Application Type
Castings
Key Ingredients
Earthworm castings
Safety for Pets and Children
Yes, odor-free and non-toxic
Plant Type Suitability
Houseplants, vegetables, flowers, and more
4

Espoma Organic Plant-tone Plant Food

Organic Formula
Yes
Price
$34.97
Application Type
Granular
Key Ingredients
Rich in natural organics
Safety for Pets and Children
Yes, safe for people and pets
Plant Type Suitability
All plant types

Frequently Asked Questions About Organic Fertilizers

What makes a organic fertilizers the "best"?

We evaluate products based on quality, performance, value for money, user reviews, durability, and ease of use. Our rankings are updated regularly to reflect the latest market offerings and user feedback.

How often do you update your organic fertilizers recommendations?

Our team continuously monitors the market for new products and updates our recommendations quarterly. We also adjust rankings based on user feedback and new testing results.

Do you test all the products you recommend?

Yes, whenever possible, we physically test products in our labs. For products we can't test directly, we rely on verified user reviews, expert opinions, and detailed specifications to make informed recommendations.

What if I'm looking for a specific type of organic fertilizers?

Our top 10 list covers the most popular and highly-rated options. If you have specific requirements, check our detailed product descriptions and pros/cons to find the best match for your needs.