Cronk PuurPhos 0-12-0 | Organic Phosphorus Plant Fertilizer
500mL
$17.88
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Cronk PuurPhos 0-12-0 | Organic Phosphorus Plant Fertilizer
$17.88
NPK Ratio:
0-12-0
Product Line
PuurOrganic Line
Application Stage
Flowering
Growing Medium
Soil, Coco, Living Soil
Certification
OMRI Listed
Product Overview
PuurPhos 0-12-0 is an OMRI-certified organic phosphorus fertilizer sourced from upcycled pumpkin seeds. The concentrated formula drives flower initiation, root development, and energy transfer throughout the plant without synthetic salts or mined rock phosphate. Fully soluble for clean performance in any growing system.
Traditional organic phosphorus sources like bone meal and rock phosphite contain insoluble particles that clog irrigation equipment and settle in reservoirs. PuurPhos delivers 12% phosphorus in a sediment-free solution compatible with drip systems and hydroponics—previously impossible with organic fertilizers.
Key Benefits
- 12% phosphorus from plant-based sources powers flowering and root development
- Fully soluble formula dissolves completely without sediment or clogging
- Upcycled pumpkin seeds transform food waste into sustainable fertilizer
- OMRI Listed for certified organic production
Ideal For
Organic growers needing elevated phosphorus during flowering transitions and peak bloom. Increase PuurPhos as plants enter reproductive stages to support energy-intensive flower development.
Best Results In
Soil, living soil, and coco coir. While fully soluble and technically hydro-compatible, organic nutrients in DWC/RDWC require more attention to reservoir management and pH stability. New hydro growers should consider the Classic 3-Part system.
What's Inside
Guaranteed Analysis: 0-12-0
| Available Phosphate (P₂O₅) | 12.0% |
Derived From:
Orthophosphoric Acid Extract of Milled Seed
How To Use
PuurPhos 0-12-0
Part of the 5-Part PuurOrganic system. Provides clean, organic phosphorus from upcycled pumpkin seeds for strong root development and explosive flowering. All 5 PuurOrganic products are recommended to be used together for best results. Frequency: Feed 1-2 times per week in soil. In coco, feed with every watering.
- Mix in room temperature water (65-72°F / 18-22°C)
- PuurOrganic Mixing Order: PuurNitro → PuurPhos (2nd) → PuurK → PuurCalMag → PuurBalance
- Frequency: In soil, feed 1-2 times per week. In coco, feed with every watering.
- Gradually increase from seedling through flowering
- Maintain peak dosages through weeks 2-8 of flowering for optimal bud development
- Essential for root development during veg and flower formation during bloom
- For specific dosages and week-by-week schedule, see Feed Schedules section
💡 PuurOrganic Mixing: Armadillo (if using) → PuurNitro → PuurPhos (2nd) → PuurK → PuurCalMag → PuurBalance → Additives → Monkey Juice (LAST)
Best Results In
Soil, living soil, and coco coir. While fully soluble and technically hydro-compatible, organic nutrients in DWC/RDWC require more attention to reservoir management and pH stability. New hydro growers should consider the Classic 3-Part system.
Basic Mixing Instructions
- Start with room temperature water (65-72°F / 18-22°C)
- If using Armadillo Armour, add it FIRST
- Add base nutrients in proper order and mix thoroughly
- Add CalMag after base nutrients (if applicable)
- Add other additives, with Monkey Juice LAST
- Check pH (5.6-6.4 depending on stage and medium)
- Apply to plants - water until 10-20% runoff
Customer Reviews
Feed Schedules & Dosage
Cronk PuurPhos 0-12-0 | Organic Phosphorus Plant Fertilizer Feed Schedule
Detailed week-by-week feed schedule available. Part of the 5-Part PuurOrganic system.
OMRI Certified Organic. Use alongside other PuurOrganic products for complete nutrition.
Compatibility
Compatible Plant Types
Hemp
Vegetables
Fruits
Flowers
Houseplants
High-Value Crops
Compatible Growing Mediums
Soil
Coco Coir
Hydroponics
Living Soil
Soilless Mixes
Compatible Irrigation Styles
Hand Watering
Drip Systems
AutoPot Systems
Bottom Feed *
Recirculating Systems
Fertigation
* Bottom Feed Notice: PuurOrganic nutrients may create a biofilm buildup in bottom-feed reservoirs. Regular cleaning is recommended when using bottom-feed systems.
General Mixing Tips
- Use room temperature water (65-72°F / 18-22°C)
- Mix each nutrient thoroughly before adding the next
- Never mix concentrated nutrients together
- Check and adjust pH after all nutrients are mixed
- Store nutrients in cool, dark place away from direct sunlight
Frequently Asked Questions
What is PuurPhos?
A clean, fully soluble organic phosphorus made from upcycled pumpkin seeds to drive roots and flowering—sediment-free and system-safe.
When should I use PuurPhos?
Use at clone/early veg for root initiation, again at transition, and through bloom to support strong flower and fruit development.
Where does PuurPhos go in the mixing order?
In the PuurOrganics program: PuurNitro → PuurPhos → PuurK → PuurCalMag → PuurBalance; add one product at a time and pH last. (Do not mix concentrates together.)
Is PuurPhos compatible with my system and media?
Yes—safe for soil, coco, hydro, drip, and foliar applications; it’s fully soluble and sediment-free.
Can I run PuurPhos with other base nutrients?
Recommended within the PuurOrganics stack, but it can also be used as a targeted P supplement alongside other bases—start modest and adjust by plant response.
How often should I feed it?
Soil: once per week. Coco/Hydro: every feeding at low dose or once per week, based on EC and plant response. Foliar: every 7–14 days during active growth and bloom.
Will PuurPhos clog lines or leave residue?
No—formulated to be clean and sediment-free for drip and hydro systems.
Complete Your System
Add these essential products for optimal results throughout your grow.
8-0-0
PuurNitro 8-0-0: Organic N
OMRI Listed organic nitrogen for explosive veg growth.
- OMRI Listed organic nitrogen
- Derived from soybean protein
- Vegetative growth booster
From $21.88
0-0-15
PuurK 0-0-15: Organic K
OMRI Listed organic potassium for stronger stems and flowers.
- OMRI Listed organic potassium
- Derived from durian shells
- Strengthens stems and flowers
From $18.88
2-0-0
PuurBalance 2-0-0: Organic Micros
OMRI Listed micronutrients with amino acid chelation.
- OMRI Listed organic micronutrients
- Plant protein hydrolysate base
- Chelated trace minerals
From $20.88
Complete Kit
Save 5%
Save with the Complete Kit
Get everything you need in one package and save up to 15%.
PuurOrganics Complete Kit
Ideal for growers seeking a complete organic solution that delivers clean, balanced nutrition from seed to harvest.
- All-in-one organic system
- Promotes fast, balanced growth
- Maximizes quality and yield — no synthetics
$97.40
$92.53
Legal Disclaimer
Important Information for Our Customers
At Cronk Nutrients, we are committed to providing high-quality liquid plant fertilizers suitable for a variety of horticultural applications. Our products are designed for legal and responsible use by home growers and gardening enthusiasts. We do not condone or promote the use of our products for illegal purposes.
Customers are responsible for adhering to their local and state laws regarding plant cultivation. It is the sole responsibility of the customer to ensure compliance with all applicable laws and regulations. Cronk Nutrients will not be liable for any misuse of our products in violation of any laws.
By purchasing our products, the customer acknowledges their obligation to comply with the legal standards set forth in their jurisdiction and agrees to use our products in accordance with these laws. Cronk Nutrients reserves the right to refuse service to anyone suspected of using our products for illegal cultivation.
Thank you for choosing Cronk Nutrients for your plant nutrition needs. Grow with confidence, grow legally.