Roots Organics Extreme Serene
Best organic kelp supplement for gardeners seeking to boost plant vitality.
This marine kelp concentrate is the ultimate shortcut for gardeners looking to inject serious vigor into their plants. It’s remarkably versatile across soil and hydroponic setups, though you’ll see the most impressive results by skipping the roots and spraying it directly onto the foliage.
$34.00
at
Garden Supply Guys
Who it's for
- Users seeking simple integration into existing nutrient feeding schedules
- Growers aiming for higher flower density and oil production
- Organic gardeners prioritizing clean and natural ingredient sources
Who should skip it
- Indoor gardeners sensitive to strong or pungent organic odors
- Busy growers preferring low-maintenance, shelf-stable liquid fertilizers
- Commercial cultivators managing tight budgets for large-scale operations
Performance breakdown
Nutrient Bioavailability
Marine kelp base ensures rapid absorption for immediate plant response.
System Compatibility
Seamlessly integrates into both soil-based and complex hydroponic feeding schedules.
Foliar Efficacy
Highly effective spray application delivers concentrated vitality directly to leaf tissue.
Ease of Application
Liquid concentrate formula simplifies mixing and prevents common dosing errors.
Growth Stimulation
Noticeable boost in vigor during critical vegetative and flowering development cycles.
Organic Purity
Clean, marine-derived ingredients satisfy the needs of strict organic cultivators.
Key Specs
NPK Ratio
0.25 - 0.1 - 2
Form
Liquid
Package Weight
8.5 pounds
Release Type
Quick Release
Water Soluble
Yes
Nitrogen Percentage
0.25%
Phosphorus Percentage
0.1%
Potassium Percentage
2.0%
Application Method
Foliar Spray, Soil Drench
Primary Benefit
Root Growth
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