10 Best worm castings of 2025

Save up to 12% off

Best Choice

1

Wiggle Worm

WIGGLE WORM Castings Plus Worm Egg Material, 40-Pounds - Fertilizer for Houseplants, Vegetables, and More - Earthworm Castings to Help Improve Soil Fertility and Aeration
9.8

Exceptional

Our Rating
How do we rank?

Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you

Careful review Our team ensures quality, value, and fit based on real user feedback

Trusted insights AI and human analysis guide your decisions, reflecting real user priorities
Real users impact

Thousands of users trust our site daily

Based on millions of stores and reviews

Shoppers influence our rankings
Analyzing top stores
Value for Money

2

Wiggle Worm

Wiggle Worm 100% Pure Organic Worm Castings Fertilizer, 30-Pounds - Improves Soil Fertility and Aeration for Houseplants, Vegetables, Gardens, and More – OMRI-Listed and Mineral-Dense
9.7

Exceptional

Our Rating
3

True Organic

True Organic Worm Castings – Natural Fertilizer for Enhanced Soil Health, Root Growth, and Bountiful Yields
9.6

Exceptional

Our Rating
4

BRUT WORM FARMS
Brut Organic Worm Castings – 5 LB – Natural Nutrients, Fertility Builder, Plant Food for Potting Soil, Garden Soil, Indoor and Outdoor Use
Main highlights

Key Features
Certified organic Brut Worm Castings enhance plant growth with mineral-rich nutrition, ensuring lush, vibrant plants through pure, in-house crafted organic goodness.

Ideal Use Cases
Perfect for gardeners seeking organic solutions for healthier plants and bountiful yields, excelling in indoor and outdoor gardens, potted plants, and vegetable patches.

Customer Praise
Users rave about the noticeable improvement in plant health and vigor, highlighting enhanced growth and yield as the castings` most lauded benefit.
Key specs
- Item Form:Worm Castings
- Ingredients:Certified organic ingredients
- Application:Garden fertilizer
- NPK Ratio:N/A
- Coverage:N/A
9.5

Excellent

Our Rating

9.9
Freshness

9.9
Simple to use

9.5
Fashion
5

Back to the Roots

Back to the Roots 100% Organic & Made in USA Worm Castings, All Natural Plant Fertilizer and Soil Enhancer, 5lb Value Pack
9.4

Excellent

Our Rating

9.9
Absorbency

9.9
Simple to use

9.5
worth the money
See Today’s Deals & Prices
6

Wiggle Worm
Wiggle Worm 100% Pure Organic Worm Castings Fertilizer, 30-Pounds - Improves Soil Fertility and Aeration for Houseplants, Vegetables, Gardens, and More – OMRI-Listed and Mineral-Dense
Main highlights

Key Features and Benefits
Non-toxic, odor-free, perfect for houseplants, vegetables, and flowers. Enhances plant happiness indoors and outdoors with just a handful.

Ideal Use Cases
Exceptional for garden enthusiasts and indoor plant caretakers. Ideal for nurturing a wide range of plants from kitchen herbs to ornamental flowers.

Customer Reviews Highlight
Most praised for its effectiveness in promoting plant growth and health, with users loving the convenience of its non-toxic, odor-free formula.
9.3

Excellent

Our Rating

9.9
Simple to use

9.3
worth the money

9.1
Aroma
7

Wiggle Worm
Wiggle Worm 100% Pure Organic Worm Castings Fertilizer, 15-Pounds - Improves Soil Fertility and Aeration for Houseplants, Vegetables, Gardens, and More – OMRI-Listed and Mineral-Dense
Main highlights

Key Features
Enhances soil structure, promotes aeration, and retains water, ideal for healthy plant growth. Odorless and suitable for both indoor and outdoor plants.

Ideal Use Cases
Perfect for houseplants, vegetables, and flowers, enhancing growth in garden beds, pots, and indoor settings without any unpleasant smell.

Customer Praise
Users commonly highlight its effectiveness in boosting plant health and growth, appreciating its organic nature and ease of use.
9.2

Excellent

Our Rating

9.9
Simple to use

9.9
Aroma

9.5
worth the money
8

Wiggle Worm
Wiggle Worm 100% Pure Organic Worm Castings Fertilizer, 4.5-Pounds - Improves Soil Fertility and Aeration for Houseplants, Vegetables, Gardens, and More – OMRI-Listed and Mineral-Dense

12% Off
Main highlights

Key Features
Pure worm castings, improves soil structure, easy to use, certified organic, ideal for both indoor and outdoor plants.

Ideal Use Cases
Perfect for vegetables, flowers, houseplants; enhances plant growth with minimal application. Great for soil aeration and water retention.

Customer Praise
Highly praised for its effectiveness in promoting plant health and growth, ease of use, and odorless, non-toxic properties.
9.1

Excellent

Our Rating

9.9
Light weight

9.9
Simple to use

9.1
worth the money
9

plantonix

Worm Bliss (8 Qts) - Organic Worm Castings for Plants & Gardening - OMRI-Listed Earthworm Castings for Plants, Vegetables, Flowers, & Potting Soil - Organic Garden Fertilizer Rich in Nutrients
9.0

Excellent

Our Rating

9.5
Absorbency

9.1
Simple to use

8.9
worth the money
10

Wiggle Worm

Wiggle Worm 100% Pure Organic Worm Castings Fertilizer, 15-Pounds - Improves Soil Fertility and Aeration for Houseplants, Vegetables, Gardens, and More – OMRI-Listed and Mineral-Dense
8.9

Very Good

Our Rating

10 Best worm castings of 2025

1

WIGGLE WORM Castings Plus Worm Egg Material, 40-Pounds - Fertilizer for Houseplants, Vegetables, and More - Earthworm Castings to Help Improve Soil Fertility and Aeration

How do we rank?

How do we rank?

Analyzing top stores

2

Wiggle Worm 100% Pure Organic Worm Castings Fertilizer, 30-Pounds - Improves Soil Fertility and Aeration for Houseplants, Vegetables, Gardens, and More – OMRI-Listed and Mineral-Dense

3

True Organic Worm Castings – Natural Fertilizer for Enhanced Soil Health, Root Growth, and Bountiful Yields

4

Brut Organic Worm Castings – 5 LB – Natural Nutrients, Fertility Builder, Plant Food for Potting Soil, Garden Soil, Indoor and Outdoor Use

9.9

9.9

9.5

5

Back to the Roots 100% Organic & Made in USA Worm Castings, All Natural Plant Fertilizer and Soil Enhancer, 5lb Value Pack

9.9

9.9

9.5

6

Wiggle Worm 100% Pure Organic Worm Castings Fertilizer, 30-Pounds - Improves Soil Fertility and Aeration for Houseplants, Vegetables, Gardens, and More – OMRI-Listed and Mineral-Dense

9.9

9.3

9.1

7

Wiggle Worm 100% Pure Organic Worm Castings Fertilizer, 15-Pounds - Improves Soil Fertility and Aeration for Houseplants, Vegetables, Gardens, and More – OMRI-Listed and Mineral-Dense

9.9

9.9

9.5

8

Wiggle Worm 100% Pure Organic Worm Castings Fertilizer, 4.5-Pounds - Improves Soil Fertility and Aeration for Houseplants, Vegetables, Gardens, and More – OMRI-Listed and Mineral-Dense

9.9

9.9

9.1

9

Worm Bliss (8 Qts) - Organic Worm Castings for Plants & Gardening - OMRI-Listed Earthworm Castings for Plants, Vegetables, Flowers, & Potting Soil - Organic Garden Fertilizer Rich in Nutrients

9.5

9.1

8.9

10

Wiggle Worm 100% Pure Organic Worm Castings Fertilizer, 15-Pounds - Improves Soil Fertility and Aeration for Houseplants, Vegetables, Gardens, and More – OMRI-Listed and Mineral-Dense

Sign up and get exclusive special deals