Suståne Fertilizer
Best organic nutrient boost for dedicated home gardeners and soil health enthusiasts.
This granular blend utilizes a four-way nitrogen release system to provide consistent nutrition for turf surfaces. By combining controlled-release technology with a natural compost base, it supports both immediate growth and long-term soil vitality for professional-grade lawn maintenance.
$69.99
at
Gertens Garden Center
More High Nitrogen Controlled Release Natural Fertilizer options
Who it's for
- Gardeners seeking low-maintenance feeding with long-lasting results
- Eco-conscious growers focused on long-term soil vitality
- Homeowners wanting one reliable fertilizer for their entire landscape
Who should skip it
- Indoor gardeners or those sensitive to earthy, organic smells
- Users requiring instant visual improvements for stressed plants
- Budget-focused shoppers managing very large agricultural areas
Performance breakdown
Nutrient Longevity
The 16-week release window outlasts most standard consumer-grade fertilizers.
Soil Health Impact
Organic compost base actively improves soil structure beyond simple feeding.
Application Versatility
Granular consistency works seamlessly across fairways, lawns, and sports turf.
Growth Consistency
Four-way nitrogen release prevents the typical feast-or-famine growth cycles.
Professional Grade Efficacy
Engineered to meet the rigorous demands of commercial turf management.
Ease of Distribution
Heavy 50-pound bags require significant effort to maneuver and spread.
Key Specs
NPK Ratio
18-1-8
Package Weight
50 lbs
Fertilizer Form
Granular
Release Type
Controlled Release
Duration of Effectiveness
12-16 weeks
Intended Use
Lawns, sportfields
Know before you buy
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