Age Old Kelp
Best natural supplement for gardeners seeking healthier soil and stronger plant growth.
Age Old Kelp is a natural plant supplement derived from sustainably harvested Ascophyllum nodosum sea kelp. It provides a quick-release source of essential nutrients with an NPK ratio of 0.30-0.025-0.015. This supplement enhances soil biology, promoting beneficial microbial activity and improving nutrient uptake through natural chelators. It also supports plant antioxidant production and aids in robust seed germination, making it ideal for lawns, gardens, and shrubs.
$17.99
Owner Satisfaction
4.6
/ 5
Category Rank
1941
/ 4448
#1941 in Fertilizers
Price vs Category Average
-71%
Below average
NPK Ratio
0.300.0250.015
/ --
Who it's for
- Gardeners seeking stronger roots and faster vegetative growth
- Outdoor growers needing plants that survive extreme weather
- Soil enthusiasts looking to maximize existing nutrient uptake
Who should skip it
- Indoor gardeners sensitive to strong, lingering organic smells
- Heavy feeders requiring a complete NPK fertilizer solution
- Budget-conscious growers preferring cheaper synthetic or granular options
Performance breakdown
Soil Vitality Impact
Actively stimulates microbial life for a healthier, more resilient root zone.
Nutrient Absorption Efficiency
Natural chelators significantly improve how plants intake essential minerals from soil.
Germination Support
Provides the necessary biological boost for faster, more reliable seed starts.
Application Versatility
Liquid concentrate formula works seamlessly across lawns, gardens, and indoor plants.
Sustainability Profile
Sustainably harvested Ascophyllum nodosum ensures an environmentally conscious gardening routine.
Nutrient Density
Low NPK levels serve better as a supplement than a primary fertilizer.
Key Specs
NPK Ratio
0.30-0.025-0.015
Source Material
Ascophyllum nodosum (Sea Kelp)
SKU/Model
AO30100
Fertilizer Form
Liquid Concentrate
Release Type
Quick Release
Fertilizer Source
Natural
Nitrogen
0.30%
Phosphorus
0.025%
Features
- Natural, fast-acting nutrient source
- Boosts beneficial soil biology
- Aids plant antioxidant production
- Supports effective seed germination
- Improves nutrient uptake naturally
- Derived from sustainably harvested kelp
What customers say
Consumers consistently highlight the exceptional quality and efficacy of Age Old Kelp, noting significant improvements in plant vitality, root structure, and overall growth vigor. Users appreciate the concentrated formula, which makes application easy and provides substantial value for money. Many reviewers consider this kelp product a foundational element in their successful gardening routines, praising its reliable performance across various plant types.
Know before you buy
Age Old Kelp acts more as a plant supplement than a primary fertilizer. While it provides a small amount of NPK, its main strength lies in enhancing soil biology and helping plants better absorb nutrients from the soil.
Yes, it is safe for houseplants. Because it is a liquid concentrate, it is easy to dilute and apply to container plants to support overall vigor and stress resistance.
The natural compounds found in Ascophyllum nodosum kelp help stimulate early root development and provide a gentle nutrient boost that supports seedlings as they transition from germination to active growth.
Age Old Kelp is derived from natural, sustainably harvested sea kelp. It is an excellent choice for gardeners looking to improve soil health and plant resilience using naturally sourced inputs.
No, it should be used as a supplement alongside your regular feeding schedule. Its low NPK ratio means it won't provide enough macronutrients to support heavy-feeding plants on its own.
For best results, apply it regularly throughout the growing season. Because it is a quick-release formula, consistent application helps maintain active soil biology and steady nutrient uptake.
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$18