Chelated Iron DTPA Fertilizer
- Regular Price
- $ 29.99
- Sale Price
- $ 29.99
- Regular Price
- $ 29.99
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Chelated Iron DTPA Fertilizer (11% Iron)
Unlock superior iron nutrition with our premium Chelated Iron DTPA Fertilizer. This advanced formula delivers 11% chelated iron with exceptional stability in alkaline soils up to pH 7.5. Perfect for challenging growing conditions where EDTA chelates fail, our DTPA formulation ensures maximum iron availability for vibrant, chlorosis-free plants.
🔬 Superior pH Stability
DTPA chelation maintains iron availability in soils up to pH 7.5, outperforming EDTA in alkaline conditions.
⚡ Rapid Chlorosis Correction
11% chelated iron provides fast greening response, visible within 7-10 days of application.
💧 Versatile Application
100% water-soluble for soil drench, foliar spray, fertigation, or hydroponic systems.
KEY FEATURES & BENEFITS
- 11% Chelated Iron: Optimal concentration for efficient deficiency correction with lower application rates
- DTPA Chelation Technology: Superior stability in pH 4.0-7.5, ideal for moderately alkaline soils
- Extended Availability: Remains bioavailable longer than sulfate forms, reducing application frequency
- No Soil Tie-Up: Protected from precipitation by phosphates, carbonates, and bicarbonates
- Enhanced Photosynthesis: Rapidly restores chlorophyll production for healthier, greener plants
- Professional Grade: Used by commercial growers for precision micronutrient management
- Tank Mix Compatible: Can be combined with most fertilizers and pesticides
- Environmentally Responsible: Precise formulation minimizes runoff and environmental impact
DERIVED FROM
Iron Diethylenetriaminepentaacetate (Fe-DTPA)
Advanced chelation provides superior performance in alkaline soils where EDTA chelates become ineffective.
APPLICATION RATES & DIRECTIONS
Below are recommended rates for various applications. For severe deficiencies, increase frequency rather than concentration.
🌱 Soil Application
| Plant Type | Application Rate | Frequency |
|---|---|---|
| Houseplants (6" pot) | 1-2 tsp per pot | Every 4-6 weeks |
| Garden Vegetables | 1-2 tbsp/gallon water | Every 3-4 weeks |
| Ornamental Shrubs | 2-4 tbsp per plant | 2-3 times per year |
| Trees | 1/4-1 cup per tree | 2 times per year |
| Field Crops | 2-4 lbs/acre | As needed |
🍃 Foliar Application
| Application | Mixing Rate | Coverage/Notes |
|---|---|---|
| General Foliar | 1-2 tsp/gallon water | 20-30 plants/gallon |
| Severe Deficiency | 1 tbsp/gallon water | Apply every 2 weeks |
| Prevention | 1 tsp/gallon water | Monthly during growing season |
| Commercial Crops | 1-2 lbs/100 gallons | Full coverage spray |
💧 Hydroponics/Fertigation
| System | Concentration | Target ppm Fe |
|---|---|---|
| Hydroponics | 1-2 oz/100 gallons | 2-5 ppm |
| Fertigation | 1-2 lbs/acre/application | Monitor with testing |
| Injection Systems | Stock: 2-4 oz/gallon | Dilute 1:100-200 |
IRON DTPA CALCULATOR
Chelated Iron DTPA Calculator
Calculate the exact amount needed for your specific application.
🍃 Foliar Spray Application
📋 Quick correction: 1-2 tsp per gallon for most plants
🌱 Soil Drench Application
📋 Standard rate: 1-2 tbsp per gallon of water
🌾 Alkaline Soil Treatment
📋 For soils pH 7.0-7.5 where EDTA fails
💧 Hydroponics/Reservoir
📋 Target: 2-5 ppm Fe in nutrient solution
Powered by Greenway Biotech, Inc. — Premium fertilizers since 1989
GROW WITH CONFIDENCE
Below are important details on quality, returns, sustainability, and charitable efforts that set our product apart.
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
Hassle-Free Return Policy
If you're not completely satisfied, we offer a 30-day money-back guarantee. Simply return the unused portion in its original packaging, and we'll process a full refund.
Environmental Responsibility
We're committed to sustainable practices, including:
- Biodegradable packaging
- Precise nutrient formulation to reduce runoff
- Support for eco-friendly farming methods
Charitable Contributions
1% of all profits go to our foundation, focused on improving educational opportunities for children.
DOCUMENTS
FREQUENTLY ASKED QUESTIONS
Click on each question to see the answer.
What is chelated iron DTPA and why is it better than EDTA?
Chelated iron DTPA (Diethylenetriaminepentaacetic acid) is an advanced form of iron fertilizer specifically designed for alkaline soil conditions. The key advantage over EDTA chelates is pH stability:
• Iron EDTA: Effective up to pH 6.5
• Iron DTPA: Effective up to pH 7.5
• Iron EDDHA: Effective up to pH 9.0
DTPA chelation offers these advantages:
- Remains stable in moderately alkaline soils where EDTA fails
- Protects iron from precipitation by carbonates and bicarbonates
- Provides 3-5x better availability than iron sulfate in high pH
- Compatible with calcium-rich irrigation water
- Ideal for Western U.S. soils with naturally high pH
Choose DTPA when your soil pH is above 6.5 or when using alkaline irrigation water. For extremely alkaline soils (pH above 7.5), consider iron EDDHA.
How and when should I apply iron DTPA for best results?
Application timing is critical:
- Early spring: Apply before or during early growth for prevention
- At first chlorosis signs: Don't wait for severe yellowing
- Cool soil conditions: Iron deficiency often appears when soils are cold and wet
Application methods (ranked by effectiveness):
-
Foliar spray: Fastest results (7-10 days)
- Mix 1-2 tsp per gallon for prevention
- Use 1 tbsp per gallon for severe deficiency
- Apply early morning or evening
- Add surfactant for better absorption
-
Soil drench: Longer lasting effect
- Apply 1-2 tbsp per gallon around root zone
- Water in thoroughly
- Best for container plants
-
Fertigation: Convenient for large areas
- Inject at 1-2 lbs per acre
- Maintain 2-5 ppm in solution
Pro tip: Combine foliar application for quick correction with soil application for sustained control.
Which plants benefit most from iron DTPA in alkaline soils?
High-Risk Plants in Alkaline Soils (pH > 7.0):
Fruit Trees & Vines:
- Citrus (especially susceptible)
- Peaches, pears, and apples
- Grapes (wine and table varieties)
- Berries (strawberries, raspberries)
Ornamentals:
- Roses (chronic sufferers in alkaline soil)
- Azaleas and rhododendrons
- Pin oaks and red maples
- Petunias and calibrachoa
Vegetables:
- Tomatoes and peppers
- Beans and peas
- Spinach and lettuce
- Melons and squash
Turfgrass:
- Kentucky bluegrass
- Perennial ryegrass
- Tall fescue in high pH soils
DISCOVER MORE GARDEN WISDOM
HAVE QUESTIONS?
Check out our full FAQ or contact our support team for personalized advice.
Email: questions@greenwaybiotech.com
CUSTOMER SUCCESS STORIES
"After just two applications, my yellowing citrus trees transformed completely. The DTPA formula works perfectly in our pH 7.3 soil where EDTA failed."
"As a professional gardener dealing with alkaline soils, this DTPA formula outperforms all other iron products. Essential for our rose gardens."
"Our vineyard in alkaline soil struggled until we switched to iron DTPA. The difference in vine vigor and fruit quality has been remarkable."