House & Garden Algen Extract
Best organic supplement for gardeners seeking stronger roots and plant immunity.
Elevate your plant's vitality with House & Garden Algen Extract, a premium liquid supplement crafted from cold-pressed Norwegian Sea Kelp. This potent formula is packed with essential macro and micro-nutrients, hormones, and polysaccharides to foster robust root development and enhance nutrient absorption. It actively strengthens your plant's natural defenses, improving resistance to pests and diseases for visibly healthier growth. Suitable for all plant types and growth stages, Algen Extract integrates seamlessly with your existing nutrient regimen, promoting overall plant health and vigor.
$36.71
Owner Satisfaction
4.7
/ 5
Category Rank
50
/ 4348
#50 in Fertilizers
Price vs Category Average
-40%
Below average
Source Material
Norwegian Sea Kelp (Ascophyllum nodosum)
/ Norwegian Sea Kelp (Ascophyllum nodosum)
Who it's for
- Growers managing plants in harsh or unpredictable climates
- Cultivators prioritizing strong root systems for better nutrient absorption
- Gardeners seeking healthier, more vigorous plant development
Who should skip it
- Budget-conscious hobbyists preferring cost-effective synthetic alternatives
- Beginners wanting a simple, low-maintenance feeding routine
- Indoor growers sensitive to strong, earthy organic smells
Performance breakdown
Nutrient Bioavailability
Cold-pressed extraction preserves delicate enzymes for maximum plant absorption.
Root Development
Stimulates rapid root hair formation to optimize overall nutrient uptake.
System Compatibility
Seamlessly integrates into any existing soil, coco, or hydroponic regimen.
Immunity Support
Natural hormones actively fortify plant defenses against common environmental stressors.
Concentration Efficiency
High potency formula ensures a little goes a long way.
Versatility
Effective across all plant types and every stage of growth.
Key Specs
Source Material
Norwegian Sea Kelp (Ascophyllum nodosum)
Extraction Method
Cold water extraction
Nutrient Content
Macro-nutrients (N, P, K, Ca, Mg & S) and Micro-nutrients (Mn, Cu, Fe & Zn)
Active Components
High levels of active enzymes, cytokinins, amino acids, and natural hormones
Available Sizes
250ml, 500ml, 1L
Recommended Dilution Rate
1ml per liter of water
Fertilizer Source
Organic, Natural
Application Method
Soil Drench
Features
- Preserves biological life through cold-pressed extraction
- Stimulates root hair formation for better nutrient uptake
- Boosts plant immunity against pests and diseases
- Rich in natural hormones and polysaccharides
- Promotes rapid and visible plant health improvements
- Concentrated formula for efficient and long-lasting use
- Derived from premium Norwegian Sea Kelp
- Supports all growth phases and plant types
What customers say
Customers consistently praise Algen Extract for its noticeable impact on plant vigor and overall health. Reviewers frequently highlight the product's high quality, noting that it reliably delivers robust growth and improved yields across various growing mediums. The consensus points to its effectiveness as a superior growth stimulant, justifying the investment. Users appreciate the straightforward application and the consistent results achieved with every use.
Know before you buy
Yes, Algen Extract is designed to be compatible with all base nutrient programs. It works effectively alongside your standard feeding schedule for soil, coco, or hydroponic systems.
Cold-pressed extraction preserves the delicate enzymes, hormones, and biological life found in the Norwegian Sea Kelp. Unlike heat-processed alternatives, this method ensures the nutrients remain active and bioavailable for your plants to absorb.
The standard application rate is 1ml of Algen Extract per liter of water. It is a concentrated formula, so a little goes a long way in your nutrient reservoir or watering can.
Algen Extract is rich in natural hormones and polysaccharides that strengthen a plant's internal immunity. While it is not a pesticide, it helps plants build a stronger defense system, making them more resilient against common pests and environmental stressors.
Yes, it is formulated for use throughout the entire lifecycle of your plants. It is particularly beneficial during the early stages to stimulate root hair formation and throughout the vegetative and flowering phases to support overall vitality.
Algen Extract is versatile and safe for all plant types, including houseplants, vegetables, flowers, and shrubs. Whether you are gardening indoors or outdoors, it provides the same essential macro and micro-nutrients.
Still have a question?
Ask Hayley anything about this product before you decide.