Jack's Outdoor
Top Pick
Jack's

Jack's Outdoor

4.7

Best nutrient blend for outdoor hemp and cannabis cultivators.

This granular blend takes the guesswork out of outdoor cultivation by balancing essential secondary nutrients with a pH-optimized formula. You sacrifice the granular control of custom mixing, but you gain a reliable, high-performance nutrient profile specifically engineered for the demands of high-sunlight hemp and cannabis.

$65.00

In stock

at

CapCityHydro (Capital City Organics)

Who it's for

  • Gardeners seeking to prevent nutrient deficiencies and boost plant health
  • Growers prioritizing strong root systems and abundant flower production
  • Users needing fast-acting nutrients for immediate plant growth results

Who should skip it

  • Budget-conscious shoppers looking for inexpensive, general-purpose fertilizers
  • Busy gardeners preferring low-maintenance, slow-release feeding schedules
  • Beginners worried about the risks of over-fertilizing sensitive plants

Performance breakdown

Nutrient Density

High-potency NPK ratio delivers concentrated fuel for vigorous outdoor growth.

Excellent

pH Optimization

Acidic formulation ensures consistent nutrient availability in diverse soil conditions.

Excellent

Application Ease

Granular consistency allows for uniform distribution across large outdoor plots.

Excellent

Secondary Nutrient Profile

Added magnesium and sulfur prevent common deficiencies in high-sunlight environments.

Excellent

Outdoor Resilience

Engineered specifically to withstand the demands of intense, direct sun exposure.

Excellent

Production Efficiency

Cost-effective formula maximizes yield potential for large-scale hemp and cannabis.

Excellent

Key Specs

NPK Ratio

18-8-23

Package Weight

25 lb.

Fertilizer Form

Granular

Secondary Nutrients

Magnesium (Mg) and Sulfur (S)

pH Effect

Potentially acidic

Intended Use

Outdoor production

Nitrogen Percent

18%

Phosphorus Percent

8%

Potassium Percent

23%

Fertilizer Source

Mineral Based

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CapCityHydro (Capital City Organics)
CapCityHydro (Capital City Organics)
In stock
$65.00
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