Growth Essentials Earthworm Castings, 4 Lb.
Best organic soil amendment for gardeners seeking healthier, more vibrant plant growth.
Elevate your gardening with Earth Science Earthworm Castings, a premium, all-organic soil amendment. This natural compost is renowned for its ability to enhance soil structure and fertility without the risk of burning plants. It's OMRI Listed and perfect for fostering a living soil environment by increasing microbial activity. Suitable for everything from seed starting to established trees and shrubs, these castings provide a slow, steady release of essential nutrients, promoting healthier growth and vibrant blooms in all your gardening endeavors.
$26.99
Owner Satisfaction
4.7
/ 5
Category Rank
6
/ 187
#6 in Compost
Price vs Category Average
+11%
Above average
Brand
Earth Science
/ Earth Science
Who it's for
- Gardeners seeking gentle, burn-free plant nutrition
- Soil health enthusiasts improving drainage and moisture retention
- Organic growers looking to naturally boost plant immunity
Who should skip it
- Casual users who struggle with proper long-term storage
- Budget-conscious gardeners managing large-scale planting areas
- Gardeners needing quick, high-concentration nutrient solutions
Performance breakdown
Soil Enrichment
Slow-release nutrients provide a consistent foundation for long-term plant health.
Microbial Activity
Actively fosters a living soil ecosystem for superior root development.
Application Versatility
Perfectly suited for everything from delicate seedlings to mature landscape shrubs.
Safety Profile
Organic, non-burning formula eliminates the risk of over-fertilizing sensitive plants.
Ease of Handling
Granular texture ensures clean, mess-free application compared to traditional compost.
Organic Integrity
OMRI listing guarantees compliance with the highest standards for organic gardening.
Key Specs
Brand
Earth Science
Weight
4.0 lbs
SKU
173709
Certification
OMRI Listed
Composition
Natural Compost
Form
Granular
Odor Level
Low Odor
Release Type
Slow Release
Features
- Richest, most natural compost available
- Naturally non-burning and odorless
- Increases microbial activity for living soil
- Slowly enriches soil with essential nutrients
- Suitable for seed starting and established plants
- All organic formulation
- OMRI Listed for organic gardening
What customers say
Customers overwhelmingly praise Growth Essentials Earthworm Castings for superior quality and visible plant results. Reviewers consistently report significant improvements in growth vigor and root development, often calling it a "plant superfood." The product's purity is a major highlight; users appreciate the fine texture and the absence of fillers or pests. It is versatile, easily incorporated into soil or brewed as a tea, and reliably delivers gentle organic nutrients without burning plants. While the effectiveness is undisputed, some dedicated gardeners find the current bag size expensive relative to the premium price, wishing for larger, more economical bulk options. Overall, the consensus confirms that the exceptional quality and reliable performance justify the investment, leading to strong repurchase intent.
Know before you buy
No, Earthworm Castings are naturally non-burning. They are gentle enough to be used directly around delicate seedlings or established plants without the risk of nutrient burn associated with synthetic fertilizers.
These castings are excellent for both. Because they are odorless and improve soil structure, they are a great choice for boosting the health of indoor potted plants as well as outdoor garden beds.
Being OMRI Listed means the product has been reviewed by the Organic Materials Review Institute and meets the standards for use in certified organic gardening and farming.
Worm castings introduce beneficial microbes into your soil, which helps create a 'living' environment. This improves soil structure and allows for a slow, steady release of nutrients that plants can easily absorb over time.
Yes, it is highly recommended for seed starting. The gentle, organic composition provides a nutrient-rich foundation that supports early root development without overwhelming young plants.
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$27