Jack's Professional General Purpose Fertilizer
Best balanced fertilizer for growers managing large-scale, continuous feeding programs.
This balanced 20-20-20 formula is the gold standard for growers who want a no-nonsense, consistent feeding routine for everything from vegetables to shrubs. While the massive 25-pound bag is overkill for a casual balcony gardener, it is an unbeatable, cost-effective workhorse for anyone serious about maintaining a lush, high-yield landscape.
$51.00
at
CapCityHydro (Capital City Organics)
Who it's for
- Gardeners managing diverse plant collections with varying nutritional needs
- Plant owners seeking comprehensive nutrition to prevent common deficiencies
- Commercial growers utilizing automated fertigation or liquid feed systems
Who should skip it
- Home hobbyists lacking specialized injection or dosing equipment
- Beginners uncomfortable monitoring electrical conductivity and soil salinity levels
- Small-scale growers with limited storage space or plant volume
Performance breakdown
Nutrient Balance
Classic 20-20-20 ratio provides reliable, predictable growth for diverse plant types.
Solubility Speed
Fine powder dissolves rapidly without leaving stubborn residue in mixing tanks.
Application Versatility
Works seamlessly across vegetables, flowers, and shrubs for simplified garden maintenance.
Feeding Efficiency
Optimized for continuous liquid feeding programs to ensure steady, consistent nourishment.
Value Density
The 25 lb bulk format offers significant cost savings for high-volume growers.
Safety Profile
Synthetic formulation requires careful handling around pets and children during application.
Key Specs
Nitrogen Percentage
20.0%
Phosphorus Percentage
20.0%
Potassium Percentage
20.0%
Fertilizer Form
Water Soluble Powder
Fertilizer Source
Synthetic
Application Method
Soil Drench
Season of Application
All Season
Water Soluble
True
Package Weight
25 lb
Release Type
Continuous Feed
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