ICL Osmocote Plus
Best controlled-release fertilizer for professional growers and dedicated home gardeners.
This is the gold standard for hands-off plant care, delivering a steady, balanced nutrient stream that eliminates the guesswork of frequent feeding. You sacrifice the ability to adjust your fertilization schedule on the fly, but you gain a reliable, set-it-and-forget-it system that keeps even sensitive crops thriving for months.
$119.06
at
Steve Regan Company
Who it's for
- Busy gardeners wanting a set-it-and-forget-it feeding schedule
- Plant enthusiasts seeking complete, professional-grade nutrition
- Beginners worried about damaging delicate root systems
Who should skip it
- Budget-conscious growers prioritizing low upfront costs
- Gardeners in climates with highly volatile temperature swings
- People needing an immediate fix for starving plants
Performance breakdown
Nutrient Consistency
Resin-coated cores ensure a steady, reliable feed throughout the season.
Application Versatility
Blends seamlessly into growing media or sprinkles easily for nursery use.
Micronutrient Profile
Comprehensive additive package supports robust health beyond basic NPK needs.
Crop Safety
Gentle release mechanism protects sensitive plants from fertilizer burn risks.
Release Precision
Predictable duration minimizes the need for frequent, labor-intensive re-application.
Bulk Handling
Fifty-pound bag is ideal for professional scale but heavy for hobbyists.
Key Specs
NPK Ratio
15-9-12
Release Duration
3-4 Months
Package Weight
50 lb
Core Composition
100% resin-coated homogenous cores
Nutrient Content
NPK plus essential micronutrients
Fertilizer Source
Synthetic
Duration of Effectiveness
4.0 months
Container Weight
50.0 pounds
Target Plant Type
Lawn, Vegetables
Fertilizer Form
Granular
Know before you buy
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