Earth Science Earthworm Castings
Best organic soil amendment for gardeners seeking healthier, more vibrant plants.
This is the gold standard for soil health, turning tired dirt into a thriving ecosystem without the pungent smell or risk of chemical burn. It requires a bit more manual mixing than synthetic fertilizers, but the payoff is a robust, organic foundation that makes your plants practically self-sustaining.
$27.99
at
Starkie Bros. Garden Center
Who it's for
- Gardeners seeking steady, burn-free plant nutrition
- Indoor growers needing improved soil drainage and microbial health
- Pet owners and parents prioritizing non-toxic garden inputs
Who should skip it
- Budget-conscious gardeners managing large-scale planting areas
- Users looking for high-concentration, fast-acting synthetic fertilizers
- Indoor gardeners sensitive to natural soil odors and textures
Performance breakdown
Soil Vitality Impact
Rapidly stimulates microbial life for a more resilient root environment.
Application Versatility
Seamlessly integrates into indoor pots, vegetable beds, and ornamental landscapes.
Nutrient Delivery
Slow-release formula ensures consistent nourishment without risking chemical burn.
Organic Integrity
OMRI certification provides total confidence for strictly organic gardening practices.
User Experience
Odorless composition makes indoor application clean and entirely hassle-free.
Granular Consistency
Uniform texture allows for precise, mess-free distribution across all soil types.
Key Specs
Weight
12 lbs
Brand
Earth Science
Product type
Soil Conditioner
Form
Granular
Odor Level
Low Odor
Organic Certification
OMRI Listed
Intended Use
Lawn, Vegetable Garden, Indoor Plants, Trees and Shrubs
Application Method
Sprinkle a small amount
Nutrient Release Rate
Slow Release
Microbial Enhancement
Yes
Know before you buy
Still have a question?
Ask Metto anything about the Earth Science Earthworm Castings before you decide.