Blossom Green Fertilizer 2-6-8
- Regular Price
- $ 24.99
- Sale Price
- $ 24.99
- Regular Price
- $ 24.99
- Unit Price
- per
Blossom Green 2-6-8
Premium bloom-stage concentrate in our 4-part hydroponic system. High phosphorus and potassium drive abundant flowering, essential oil production, and top-tier harvest quality.
Ideal Applications
FEATURES
🌸 High Phosphorus (6%)
Elevated phosphorus drives ATP energy transfer, bud initiation, flower density, and essential oil production during the critical bloom stage.
💪 High Potassium (8%)
Industry-leading potassium level enhances flower quality, color, aroma, sugar transport, and overall harvest weight for premium results.
🔬 Optimized 2-6-8 Ratio
Low nitrogen with high P-K is specifically engineered for flowering crops, directing energy away from foliage and toward bud and fruit production.
🧩 4-Part System Integration
Works synergistically with Cal-Mag Plus, Grow Green, and Micro Green for complete, balanced nutrition from seedling through harvest.
💊 100% Water-Soluble Powder
Dissolves completely for immediate nutrient availability. No sediment, no clogged lines, and no shaking required unlike liquid competitors.
🧪 Tested for Heavy Metals
Every batch independently lab tested for heavy metal content. When growing food or medicine, purity is non-negotiable.
📦 Indefinite Shelf Life
Dry powder format never expires when stored sealed. Liquid bloom fertilizers degrade in 1–3 years — Blossom Green stays potent indefinitely.
💰 ~$0.10 per Gallon
Concentrated dry formula costs a fraction of liquid bloom products. No paying to ship water — just pure nutrients at commercial-grade value.
🌿 Smooth Veg-to-Bloom Transition
Feeding schedule includes transition-stage ratios so you can gradually shift from Grow Green to Blossom Green without shocking plants.
📄 CDFA Registered
Registered with the California Department of Food and Agriculture. Guaranteed analysis verified for commercial and hobbyist growers alike.
DERIVED FROM
Blossom Green 2-6-8 is formulated from pharmaceutical and reagent-grade raw materials selected for maximum solubility, purity, and plant availability in hydroponic systems.
Primary Nutrient Sources
Monopotassium Phosphate (MKP) 0-52-34
Primary source of both phosphorus and potassium. Fully water-soluble with excellent pH stability for hydroponic reservoirs.
Potassium Sulfate 0-0-53
Chloride-free potassium source that also supplies sulfur. Preferred for sensitive flowering crops where chloride can reduce quality.
Urea 46-0-0
Highly concentrated nitrogen source providing the minimal 2% N needed to maintain amino acid synthesis during bloom without promoting excess foliage.
Supporting Sources
SCIENCE BEHIND THE FORMULA
2-6-8: Engineered for Maximum Bloom Performance
The Blossom Green ratio deliberately tapers nitrogen while maximizing the phosphorus and potassium that flowering plants demand most. This P-K heavy profile supports the metabolic shift from vegetative growth to reproductive development.
🌿 Nitrogen — 2% (Maintenance Level)
Low nitrogen prevents excessive vegetative growth during bloom, directing the plant's energy toward flower and fruit production rather than leaf expansion. Just enough N to sustain amino acid synthesis and healthy tissue.
🌸 Phosphorus — 6% (Bloom Driver)
Phosphorus is the engine of flowering. It powers ATP energy transfer, drives bud initiation and flower density, supports essential oil biosynthesis, and ensures proper seed and fruit maturation.
⭐ Potassium — 8% (Quality & Ripening)
Elevated potassium enhances photosynthesis efficiency, sugar transport to developing flowers, cell turgor for firm tissue, and the color, aroma, and weight that define a premium harvest.
Why Blossom Green Outperforms Liquid Bloom Fertilizers
🎯 Higher P-K Ratio Than Competitors
At 2-6-8, Blossom Green delivers more potassium per application than most liquid bloom formulas (typically 4–7% K), translating to measurably better flower quality and harvest weight.
⚗️ Concentrated Dry Format
Dry powder means no water weight, no degradation over time, and precise control over stock solution concentration. Mix exactly what you need, when you need it.
🔗 Complete System Synergy
Designed from the ground up to work with Cal-Mag Plus, Grow Green, and Micro Green. No guesswork about compatibility — every ratio in the feeding schedule is tested and optimized.
COMPARE WITH OTHER BLOOM FERTILIZERS
| Feature | Blossom Green 2-6-8 | GH FloraNova Bloom 4-8-7 | FoxFarm Tiger Bloom 2-8-4 |
|---|---|---|---|
| NPK Ratio | 2-6-8 | 4-8-7 | 2-8-4 |
| Potassium (K) | 8% — highest | 7% | 4% — lowest |
| Form | Dry powder (dissolves instantly) | Thick liquid (must shake vigorously) | Liquid |
| Shelf Life | Indefinite | ~1 year | 2–3 years |
| System Design | 4-part complete system | 1-part (may need supplements) | 3-part (Grow Big + Big Bloom + Tiger Bloom) |
| Heavy Metal Testing | Independently lab tested | Not published | Metals listed on AAPFCO database |
| Cost per Gallon of Solution | ~$0.10 | ~$0.30+ | ~$0.25+ |
| Shipping Weight | Light (dry concentrate) | Heavy (liquid) | Heavy (liquid) |
| Feeding Schedule | Full 7-stage schedule included | Basic feed chart | Basic feed chart |
APPLICATION RATES & DIRECTIONS
Blossom Green 2-6-8 is one part of our complete 4-part hydroponic system. Use together with Grow Green, Micro Green, and Cal-Mag Plus for best results.
Stock Solution Preparation (All Products)
| Product | Package → Water | Concentration | Shelf Life |
|---|---|---|---|
| Cal-Mag Plus 2-0-0 | 2.5 lb → 1 gal | 2.5 lb/gal | 6+ months |
| Grow Green 4-2-6 | 1.7 lb → 1 gal | 1.7 lb/gal | 6+ months |
| Micro Green 2-0-3 | 1.5 lb → 1 gal | 1.5 lb/gal | 6+ months |
| Blossom Green 2-6-8 | 1.8 lb → 1 gal | 1.8 lb/gal | 6+ months |
Blossom Green Package Sizes
| Package Size | Water Needed | Stock Solution Yield |
|---|---|---|
| 1.8 lb | 1 gal | 1 gal concentrate |
| 9 lb | 5 gal | 5 gal concentrate |
| 18 lb | 10 gal | 10 gal concentrate |
| 36 lb | 20 gal | 20 gal concentrate |
Complete 4-Part Feeding Schedule (ml per gallon of reservoir water)
| Growth Stage | Cal-Mag Plus 2-0-0 | Grow Green 4-2-6 | Micro Green 2-0-3 | Blossom Green 2-6-8 | EC Target | pH Range |
|---|---|---|---|---|---|---|
| Seedlings/Clones (Week 1–2) | 2.5 | 1.25 | 1.25 | 1.25 | 0.5–0.8 | 5.5–6.5 |
| Early Vegetative (Week 3–4) | 5 | 5 | 5 | 5 | 1.0–1.4 | 5.5–6.5 |
| Late Vegetative (Week 5–6) | 7.5 | 15 | 10 | 5 | 1.4–1.8 | 5.5–6.5 |
| Transition (Week 7–8) | 10 | 10 | 10 | 10 | 1.6–2.0 | 5.5–6.5 |
| Early Bloom (Week 9–10) | 10 | 5 | 10 | 15 | 1.8–2.2 | 5.5–6.5 |
| Peak Bloom (Week 11–13) | 10 | 0 | 10 | 20 | 2.0–2.5 | 5.8–6.5 |
| Late Bloom / Flush (Week 14+) | 5 | 0 | 7.5 | 15 | 1.5–2.0 | 5.8–6.5 |
- Cal-Mag Plus — add to reservoir water and dissolve fully
- Micro Green — stir to clarity
- Grow Green — for veg and transition stages
- Blossom Green — for flowering stages
- Adjust pH last — target 5.8–6.5 during bloom
Hydroponic System Guidelines
| System Type | Feed Schedule | Special Notes | Reservoir Change |
|---|---|---|---|
| DWC / RDWC | Continuous | Monitor pH daily | Weekly |
| NFT | Continuous | Check EC twice daily | Weekly |
| Ebb & Flow | 2–4× daily | Adjust strength by flood frequency | Weekly |
| Drip / DTW | Multiple daily | Maintain 10–20% runoff | N/A |
| Coco Coir | 1–2× daily | Never let dry; always use Cal-Mag | N/A |
| Aeroponics | ~15 min cycles | Use ~75% concentration | Weekly |
HOW TO USE
Preparing Stock Solution
- Dissolve 1.8 lb of Blossom Green powder into 1 gallon of warm water (70–80°F) and stir until fully dissolved.
- Allow the stock solution to cool to room temperature before use.
- Store stock solution in a sealed container out of direct light. Shelf life: 6+ months.
- Label the container clearly — do not store Blossom Green stock in the same container as Cal-Mag Plus concentrate.
Mixing Into Reservoir
- Fill the reservoir with fresh water and add Cal-Mag Plus stock solution first. Stir and wait 1–2 minutes.
- Add Micro Green stock solution next. Stir to clarity.
- Add Grow Green (veg/transition) or Blossom Green (bloom) stock solution. Stir well.
- Check EC with a calibrated meter and adjust volume if needed.
- Adjust pH to 5.8–6.5 using pH Up or pH Down as the final step.
Transitioning from Veg to Bloom
- At flower initiation (e.g., 12/12 light flip for photoperiod crops), begin the transition phase.
- During weeks 7–8, use equal parts Grow Green and Blossom Green (10 ml/gal each).
- Gradually taper Grow Green to 0 ml/gal while increasing Blossom Green to 20 ml/gal by peak bloom.
- Monitor EC carefully during transition — rising EC may indicate plants are drinking more water than nutrients.
Pro Tip: Watch Your EC During Peak Bloom
At peak bloom (weeks 11–13), EC can climb quickly as plants drink more water than they uptake nutrients. If EC rises above 2.5, top off with plain pH-adjusted water rather than adding more nutrient solution. This prevents salt buildup and keeps phosphorus and potassium available where it matters most — at the root zone.
When Blossom Green Is the Right Choice
- Any flowering or fruiting crop in a hydroponic, coco coir, or soilless system
- Growers who want a complete 4-part system with a dedicated bloom-stage formula
- Commercial operations needing low cost-per-gallon and indefinite shelf life
- Anyone transitioning from liquid bloom nutrients and tired of paying to ship water
When to Consider Other Options
- For soil-grown flowering plants, consider Monopotassium Phosphate (MKP) 0-52-34 as a standalone bloom booster
- For organic gardens, consider Bone Meal 3-15-0 combined with Potassium Sulfate 0-0-53
- For single-crop hydroponic systems, a crop-specific formula like Tomato Fertilizer 4-18-38 or Strawberry Fertilizer 8-12-32 may be more targeted
BLOSSOM GREEN CALCULATOR
SAFETY & HANDLING
Personal Protective Equipment (PPE)
- Wear gloves and eye protection when handling dry powder or stock solution
- Avoid inhaling dust when opening bags — use in a well-ventilated area or wear a dust mask
- Wash hands thoroughly with soap and water after handling
Storage Guidelines
- Store in a cool, dry place in the original sealed bag or an airtight container
- Keep out of direct sunlight and away from heat sources
- Product is hygroscopic (absorbs moisture from air) — seal tightly between uses to prevent clumping
- If powder clumps, simply break it apart — efficacy is not affected
- Keep away from children and pets
Application Precautions
- Never mix concentrated stock solutions directly together — always dilute each into reservoir water separately
- Do not mix Blossom Green concentrate directly with Cal-Mag Plus concentrate (calcium-phosphorus precipitation)
- Dissolve powder in warm water (70–80°F) for fastest dissolution
- Avoid foliar application of concentrated solution — this formula is designed for root-zone feeding
First Aid
- Eye contact: Flush with clean water for 15 minutes. Seek medical attention if irritation persists
- Skin contact: Wash affected area with soap and water
- Ingestion: Do not induce vomiting. Contact Poison Control (1-800-222-1222) or seek medical attention
- Inhalation: Move to fresh air. Seek medical attention if symptoms persist
Refer to the Safety Data Sheet (SDS) in the Documents section for complete safety information.
COMPLETE YOUR SYSTEM
Blossom Green works best as part of our complete 4-part hydroponic nutrient system. Each component is formulated to work together without compatibility issues.
Cal-Mag Plus 2-0-0
Calcium, magnesium, and iron base. Always add first to prevent nutrient precipitation — especially critical with RO water and coco coir.
Veg StageGrow Green 4-2-6
Higher nitrogen formula for vigorous vegetative growth. Build strong structure before switching to Blossom Green at flower initiation.
EssentialMicro Green 2-0-3
Complete chelated micronutrient package. Prevents hidden hunger throughout the entire grow cycle, including the high-demand bloom stage.
Best Value4-Part Hydroponic Bundle
Get all four components together at a bundled price. Everything you need from seed to harvest in one order.
FREQUENTLY ASKED QUESTIONS
When should I switch from Grow Green to Blossom Green?
Switch at flower initiation (e.g., 12/12 light cycle for photoperiod crops). During the transition period (weeks 7–8), use equal parts Grow Green and Blossom Green at 10 ml/gal each. Then taper Grow Green to 0 and increase Blossom Green to 20 ml/gal at peak bloom. For more on bloom-stage feeding, see our guide on Flower Fertilizer 101.
Why is phosphorus emphasized in bloom formulas?
Phosphorus is critical for ATP energy transfer, bud initiation, flower density, maturity timing, and essential oil production. Without adequate phosphorus during bloom, plants cannot efficiently convert light energy into the chemical energy needed for flower development. Learn more in our article on the function of phosphorus in plants.
Why does Blossom Green have the highest potassium at 8%?
Potassium drives sugar transport, photosynthesis efficiency, and cell turgor — all of which directly impact flower size, aroma, color, and harvest weight. Many liquid bloom formulas only contain 4–7% K, which can limit quality during peak bloom. See our deep dive on the function of potassium in plants.
Do I have to use Cal-Mag Plus?
Yes — always add Cal-Mag Plus first to prevent calcium and phosphorus precipitation that makes both nutrients unavailable. This is especially important because Blossom Green is phosphorus-rich. Mixing concentrated phosphorus with concentrated calcium directly creates insoluble calcium phosphate.
Why can't I mix Blossom Green and Cal-Mag Plus concentrates directly?
Calcium and phosphorus react in concentrated form to produce insoluble calcium phosphate — essentially cement. By diluting Cal-Mag Plus into the reservoir first, you keep the calcium concentration low enough that phosphorus from Blossom Green remains fully dissolved and plant-available.
What EC and pH should I target during bloom?
Target EC rises from 1.6–2.0 during transition to approximately 2.0–2.5 at peak bloom. Maintain pH between 5.8–6.5 during bloom, which is the optimal range for phosphorus availability. If EC climbs above 2.5, top off with plain pH-adjusted water.
Can I use Blossom Green during the vegetative stage?
Yes, at low rates. The feeding schedule includes 1.25–5 ml/gal during vegetative stages to ensure a baseline of phosphorus and potassium for root and structural development. The full 20 ml/gal rate is reserved for peak bloom only.
How do I store the dry powder?
Blossom Green is hygroscopic (absorbs moisture from air). Keep the bag sealed tight between uses and store in a cool, dry place out of direct sunlight. If the powder clumps, break it up — efficacy is not affected. Dry powder has an indefinite shelf life when stored properly.
GROW WITH CONFIDENCE
Product Quality Guaranteed
- Manufactured and packaged in Madera, California, USA
- Independently tested by third-party laboratories for heavy metal content
- Registered with the California Department of Food and Agriculture (CDFA)
- Guaranteed analysis verified on every production run
Hassle-Free Return Policy
If you're not completely satisfied, we offer a 90-day money-back guarantee. Return the unused portion in its original packaging for a full refund — no questions asked.
Environmental Responsibility
- Dry powder format reduces shipping weight and carbon footprint compared to liquid fertilizers
- Precise nutrient formulation reduces runoff and waste
- Support for water-efficient hydroponic growing methods
- Ongoing research into sustainable packaging solutions
Charitable Contributions
1% of all profits go to the Greenway Foundation, focused on improving educational opportunities for children. Learn more at greenway.foundation.
DOCUMENTS
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