Espoma Organic Rock Phosphate
Best organic soil amendment for gardeners prioritizing long term root health.
This is the secret weapon for gardeners struggling with lackluster blooms and weak root systems. By opting for a pelletized mineral supplement, you trade the messy, dusty application of traditional powders for a cleaner, more precise way to feed your soil without worrying about the safety of your pets or kids.
$19.99
at
Gertens Garden Center
More Rock Phosphate options
Who it's for
- Organic gardeners seeking sustainable, multi-season soil enrichment
- Home growers wanting stronger plants and increased flower production
- Environmentally conscious families prioritizing non-toxic garden amendments
Who should skip it
- Gardeners needing an instant fix for severe nutrient deficiencies
- Landscapers working with high-pH or heavily limed soil environments
- Users sensitive to airborne particles or those without protective masks
Performance breakdown
Application Cleanliness
Pelletized texture significantly cuts down on messy, airborne dust during spreading.
Root Development Efficacy
High phosphorus content provides a reliable foundation for robust root systems.
Safety Profile
Organic, non-toxic composition ensures peace of mind for families and pets.
Ingredient Purity
Free from synthetic fillers and sludges, focusing purely on mineral nutrition.
Flowering Potential
Consistent nutrient delivery supports prolific blooms throughout the growing season.
Ease of Handling
The eight-pound bag size is manageable for most home garden applications.
Key Specs
Package Weight
8.0 lbs
NPK Ratio
0-3-0
Fertilizer Form
Granular
Nitrogen Percentage
0.0%
Phosphorus Percentage
3.0%
Potassium Percentage
0.0%
Nutrient Profile
High Phosphorus
Plant Type Application
Vegetables, Flowers
Pet and Child Safe
Yes
Water Soluble
No
Know before you buy
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