FREE SHIPPING ON ALL ORDERS OVER $35 (CONTINENTAL US ONLY!)

Grow Green 4-2-6 Concentrate – Complete Vegetative N‑P‑K

Regular Price
$ 27.99
Sale Price
$ 27.99
Regular Price
$ 27.99
Sold Out
Unit Price
per 

Weight: 1.7 Pounds (Makes 1 Gallon)

Grow Green 4-2-6 Hydroponic Fertilizer | Vegetative Growth | Greenway Biotech®

Grow Green 4-2-6

Premium Vegetative Growth Formula for Our 4-Part Hydroponic System

Elevate your vegetative growth with Grow Green 4-2-6, the powder-based upgrade to conventional liquid "grow" formulas. This macro-rich concentrate delivers higher potassium than typical 2-1-6 liquids, promoting thicker stems and denser canopy development. As part of our complete 4-part hydroponic nutrient system, it works synergistically with Micro Green, Cal-Mag Plus, and Blossom Green for professional results throughout your crop's lifecycle.

💪 Macro-Rich 4-2-6

Higher potassium than typical liquid grow formulas for superior stem strength and canopy density.

🎯 Mix-and-Match Precision

Pure macros—combine with Micro Green and Cal-Mag Plus for customized nutrition.

📦 Powder Efficiency

Ship nutrients, not water—50-70% cost savings with reduced carbon footprint.

🌟 Part of Our Complete 4-Part Hydroponic System

Grow Green + Micro Green + Cal-Mag Plus + Blossom Green = Perfect Plant Nutrition

Designed to work together for optimal results throughout all growth stages

FEATURES
  • Optimized NPK: 4% N, 2% P₂O₅, 6% K₂O for vigorous vegetative growth
  • Pure Macronutrients: Focused formula allows precise micronutrient customization
  • 100% Water-Soluble: Dissolves instantly for all hydroponic systems
  • Heavy Metal Free: CDFA registered and third-party tested
  • Powder Alternative: No sticky bottles, no water weight, longer shelf life
  • System Compatible: Safe for drip, NFT, DWC, aeroponics, and soil
  • Professional Grade: Used by commercial growers worldwide
  • Cost-Effective: 50-70% savings versus liquid nutrients
DERIVED FROM

Potassium Nitrate • Monopotassium Phosphate • Potassium Sulfate • Magnesium Sulfate

Premium-grade mineral salts ensure rapid dissolution and maximum nutrient availability in all growing systems.

APPLICATION RATES & MIXING INSTRUCTIONS

Grow Green 4-2-6 is designed to work as part of our complete 4-part hydroponic nutrient system. Always use with Micro Green, Cal-Mag Plus, and transition to Blossom Green during flowering.

📦 Step 1: Create Stock Solution

Package Size Water Amount Stock Solution Yield
2.5 lbs 1 gallon 1 gallon concentrate
5 lbs 2 gallons 2 gallons concentrate
10 lbs 4 gallons 4 gallons concentrate
25 lbs 10 gallons 10 gallons concentrate
Important: Mix the entire package at once to ensure uniform concentration. Use warm water (not hot) for faster dissolution. Store in a cool, dark place.

🌱 Step 2: Complete 4-Part Feeding Schedule (ml per gallon)

Growth Stage Grow Green Micro Green Blossom Green Cal-Mag Plus EC Target
Cuttings & Seedlings 1.25 1.25 1.25 2.5 0.5-0.8
Mild Vegetative 5 5 5 5 1.0-1.4
Aggressive Vegetative 15 10 5 7.5 1.4-1.8
Transition to Bloom 10 10 10 10 1.6-2.0
Blooming & Ripening 5 10 15 10 1.8-2.5

💧 Application Methods

System Type Application Method Special Considerations
DWC/RDWC Add to reservoir Change weekly, monitor pH daily
NFT/Aeroponics Continuous feed Filter solution, check emitters
Ebb & Flow Flood cycles Adjust concentration for frequency
Drip/DTW Multiple daily feeds 10-20% runoff recommended
Coco/Soilless Daily feeding Never let media dry completely
Mixing Order for 4-Part System:
  1. Fill reservoir with water (65-75°F optimal)
  2. Add Cal-Mag Plus first (if using RO/soft water)
  3. Add Micro Green second
  4. Add Grow Green (veg) or Blossom Green (flower)
  5. Adjust pH to 5.5-6.5 after all nutrients added
  6. Check EC/TDS - adjust if needed
Pro Tips:
  • • Higher K formula promotes thicker stems vs standard 2-1-6 ratios
  • • Reduce Grow Green gradually when transitioning to bloom
  • • Increase rates for fast-growing, heavy-feeding crops
  • • Monitor runoff EC to prevent salt buildup
GROW GREEN CALCULATOR

Grow Green 4-2-6 Calculator

Calculate precise amounts for your hydroponic system or garden.

🧪 Stock Solution Mixer

📋 Calculate water needed for your package size

🌱 Vegetative Stage Calculator

📋 Calculate Grow Green for vegetative growth

🌟 Complete 4-Part System Recipe

📋 Get the complete nutrient formula for any growth stage

🔬 EC/TDS/PPM Converter

📋 Convert between different measurement scales

💰 Cost Savings Calculator

📋 Compare powder vs liquid nutrient costs

Powered by Greenway Biotech, Inc. — Premium hydroponic nutrients since 1989

GROW WITH CONFIDENCE

Our Grow Green 4-2-6 is designed to give you peace of mind and exceptional results as part of our complete nutrient system.

Product Quality Guaranteed
  • All our products are manufactured in California, USA
  • Tested by independent third-party laboratories for quality assurance
  • Registered with the California Department of Food and Agriculture (CDFA)
  • Rigorously tested to ensure products are free from heavy metals
  • Designed specifically for hydroponic and soilless growing
Environmental Responsibility

We're committed to sustainable practices:

  • Powder format reduces shipping weight by 90% vs. liquids
  • 50-70% lower carbon footprint per nutrient unit
  • Minimal packaging waste compared to liquid bottles
  • Precise formulation reduces nutrient runoff
  • Supports efficient water use in hydroponic systems
Hassle-Free Return Policy

If you're not completely satisfied, we offer a 90-day money-back guarantee. Simply return the unused portion in its original packaging, and we'll process a full refund.

Charitable Contributions

1% of all profits go to our foundation, focused on improving educational opportunities for children.

FREQUENTLY ASKED QUESTIONS

Click on each question to see the answer.

Can Grow Green replace my liquid grow bottle?

Yes! Grow Green 4-2-6 delivers the same nutrients as premium liquid grow formulas but at 50-70% less cost per finished gallon. Match the ppm-N of your current product and you'll see equal or better results, with no heavy metals and a much smaller carbon footprint. The higher potassium ratio (6% vs typical 3%) promotes stronger stems and denser growth.

Do I still need a micro formula?

Yes - Grow Green provides only macronutrients (NPK). You must pair it with Micro Green 2-0-3 to supply essential trace elements like iron, manganese, zinc, copper, boron, and molybdenum. This separation allows you to customize micronutrient levels based on your water source and crop needs.

How does the 4-2-6 ratio compare to standard 2-1-6?

Our 4-2-6 formula contains double the nitrogen and slightly more phosphorus than typical 2-1-6 liquid grow formulas. This means you'll use less product to achieve the same nitrogen levels, further reducing costs. The enhanced ratio promotes faster vegetative growth and stronger cell development, particularly beneficial for fast-growing crops.

Why powder instead of liquid?

Powder nutrients offer multiple advantages: no water weight to ship (saving 50-70% on costs), indefinite shelf life when kept dry, no pH drift or precipitation in bottles, easier storage, and significantly reduced environmental impact. You're paying for pure nutrients, not water and plastic bottles.

Can I use this in soil?

While optimized for hydroponics, Grow Green works excellently as a soil drench when properly diluted. Use the mild vegetative rate (5 ml/gal) for soil applications and water when the top inch is dry. Always test runoff EC to prevent salt buildup in containers.

COMPLETE YOUR 4-PART SYSTEM

Grow Green works best as part of our complete hydroponic nutrient system:

Using all 4 components ensures complete, balanced nutrition throughout your plants' lifecycle.

HAVE QUESTIONS?

Our hydroponic experts are here to help you succeed. Contact our support team for personalized advice on using our 4-part system.

Call us: (562) 351-5168
Email: questions@greenwaybiotech.com

Greenway Biotech, Inc. | Est. 1989 | Making gardens and their humans healthier®

Premium hydroponic fertilizers manufactured in California, USA