Chelated Iron EDTA Fertilizer
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- $ 29.99
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- $ 29.99
- Regular Price
- $ 25.99
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Chelated Iron EDTA Fertilizer 13%
Premium chelated iron with 13% Fe—the highest concentration among chelated irons. EDTA technology delivers rapid correction of iron deficiencies in acidic to neutral soils (pH 4.0-7.0). The most cost-effective chelate for gardens, lawns, and hydroponics. 100% water-soluble for foliar spray, soil drench, and fertigation.
Chlorosis Correction Timeline
Day 1
💧
Apply & Absorb
Day 3-5
🌱
Color Change Begins
Day 7-14
🌿
Green Returns
Week 2-3
💚
Full Recovery
Perfect For These Applications
Foliar Spray
1-2 tsp/gallon
Soil Drench
1-2 tbsp/gallon
Garden Beds
1 tbsp/10 sq ft
Hydroponics
2-5 ppm Fe
Common Iron Deficiency Problems? We've Got Solutions
😟 Yellow leaves with green veins?
✅ 13% chelated iron—highest concentration for rapid chlorophyll restoration
😟 Iron sulfate not working?
✅ EDTA chelation prevents lockup, stays available up to pH 7.0
😟 Poor growth and weak plants?
✅ Iron is essential for photosynthesis, chlorophyll, and energy production
😟 Need affordable iron chelate?
✅ EDTA is the most cost-effective chelate for acidic to neutral soils
🌿 13% Iron - Highest Concentration
More iron per application than DTPA (11%) or EDDHA (6%). Fewer applications needed for correction.
⚡ Fast-Acting Formula
EDTA chelation ensures immediate availability. Visible greening within 7-14 days of application.
💰 Best Value Chelate
Most economical option for soils pH 4.0-7.0. Professional results at home-grower prices.
🔬 Chelate pH Stability Comparison
Choose EDTA for acidic soils (pH < 7.0), DTPA for neutral to moderately alkaline (pH 7.0-7.5), and EDDHA for very alkaline soils (pH > 7.5).
⚠️ Important Application Guidelines
- Apply foliar sprays early morning or evening when temps are below 85°F
- pH spray water to 5.5-6.5 for optimal absorption
- Add a non-ionic surfactant for improved foliar coverage
- Store in cool, dry place away from moisture in sealed container
- EDTA is most effective at pH below 7.0—use DTPA for higher pH
🧪 Tank Mix Compatibility
✓ Compatible
NPK fertilizers, calcium nitrate, magnesium sulfate, most micronutrients
⚠ Test First
Copper and zinc chelates in concentrated stock solutions
✗ Avoid
High phosphate concentrations in stock solutions
Quick Application Guide
Select an application type above
Features & Quality Guarantee
- 13% Chelated Iron: Highest concentration among chelated irons—more efficient than DTPA (11%) or EDDHA (6%)
- EDTA Technology: Ethylenediaminetetraacetic acid provides stability at pH 4.0-7.0
- 100% Water Soluble: Complete dissolution with no residue for any application method
- Fast-Acting Formula: Visible results within 7-14 days of application
- No Soil Tie-Up: Chelation protects iron from precipitation with calcium and phosphates
- Tank Mix Compatible: Works safely with most fertilizers and pesticides
- Professional Grade: Same quality used by commercial growers and greenhouses
- CDFA Registered: California Department of Food & Agriculture approved
- Made in USA: Packaged at our California facility since 1989
- Heavy Metal Tested: Third-party verified for purity and safety
- 90-Day Guarantee: Full refund if not satisfied with results
Application Rates & Timing
For severe deficiencies, increase application frequency rather than concentration. Always test spray on a few leaves and wait 48 hours before full application.
🌱 Soil Application
| Plant Type | Rate | Frequency |
|---|---|---|
| Houseplants (6" pot) | 1-2 tsp per pot | Every 4-6 weeks |
| Garden Vegetables | 1-2 tbsp/gallon drench | Every 2-4 weeks |
| Ornamental Shrubs | 2-4 tbsp per plant | 2-3 times/year |
| Trees | 1/4-1 cup per tree | 2 times/year (spring & fall) |
| Lawns | 3-5 lbs/acre | As needed based on appearance |
🍃 Foliar Application
| Purpose | Rate | Frequency |
|---|---|---|
| Prevention/Maintenance | 1 tsp/gallon | Monthly during growing season |
| Mild Chlorosis | 2 tsp/gallon | Every 10-14 days |
| Severe Deficiency | 1 tbsp/gallon | Weekly until corrected |
| Commercial/Large Scale | 1-2 lbs/100 gallons | Full coverage to drip |
💧 Hydroponics & Fertigation
Stock Solution Method (Recommended):
Direct measurement of powder for hydroponics can lead to inconsistent results. Use the stock solution approach:
- Make concentrate: Dissolve 2 oz (57g) in 1 gallon of water → ~1,900 ppm Fe stock
- Add 1-2 tsp stock solution per 10 gallons reservoir water
- Target: 2-5 ppm Fe (never exceed 5 ppm)
- Best for solutions pH 5.5-6.5—EDTA loses effectiveness above pH 7.0
| Crop Type | Target ppm Fe | Notes |
|---|---|---|
| Leafy Greens | 2-3 ppm | Lower end of range |
| Tomatoes/Peppers | 2-4 ppm | Increase at fruiting |
| Strawberries | 3-4 ppm | Critical for flavor |
| Herbs | 2-3 ppm | Standard range |
🌿 High-Risk Crops (Iron-Sensitive Plants)
| Crop | Sensitivity | Special Notes |
|---|---|---|
| Azaleas/Rhododendrons | Very High | Monthly during growing season; acid-loving |
| Roses | High | Apply at first sign of yellowing |
| Citrus | High | Apply before spring flush; combine foliar + soil |
| Berries (blueberry, raspberry) | High | Critical at fruit set; prefer acidic conditions |
| Petunias/Calibrachoa | High | Weekly foliar in soilless mixes |
| Gardenias | Very High | Monthly applications; acid-loving |
Iron EDTA Calculator
Compare Iron Chelates – Which One to Choose?
Quick Guide: Choose EDTA for acidic to neutral soils (pH < 7.0), DTPA for slightly alkaline (pH 7.0-7.5), and EDDHA for very alkaline soils (pH > 7.5).
| Feature | Iron EDTA | Iron DTPA | Iron EDDHA | Iron Sulfate |
|---|---|---|---|---|
| Iron Content | 13% | 11% | 6% | 20% |
| pH Stability Range | 4.0 - 7.0 | 4.0 - 7.5 | 4.0 - 9.0 | Below 6.0 |
| Water Solubility | 100% | 100% | 100% | Moderate |
| Best Application | Acidic to neutral soils | Moderately alkaline | Very alkaline, calcareous | Acidic soils only |
| Relative Cost | Low-Moderate | Moderate | High | Very Low |
| Duration in Soil | 3-4 weeks | 4-6 weeks | 6-8 weeks | 1-2 weeks |
| Speed of Action | Fast (7-14 days) | Fast (7-10 days) | Moderate (10-14 days) | Very Fast (if pH correct) |
| Staining Risk | Low | Low | High (red) | High (rust) |
Bottom Line: Iron EDTA offers the best value for most gardens and lawns with neutral to acidic soil. With 13% iron—the highest among chelates—you get more correction per dollar. If your soil pH is above 7.0, step up to Iron DTPA.
Quick Reference Guide
📋 Application Quick Reference
Foliar:
1-2 tsp/gallon
Spray weekly if deficient
1-2 tsp/gallon
Spray weekly if deficient
Soil Drench:
1-2 tbsp/gallon
Every 2-4 weeks
1-2 tbsp/gallon
Every 2-4 weeks
Garden Beds:
1 tbsp/10 sq ft
Water in thoroughly
1 tbsp/10 sq ft
Water in thoroughly
Hydroponics:
Stock solution method
Target 2-5 ppm Fe
Stock solution method
Target 2-5 ppm Fe
Documents & Certifications
Frequently Asked Questions
What is chelated iron EDTA and how does it work?
Iron EDTA uses Ethylenediaminetetraacetic acid to "chelate" (grab and protect) iron molecules, keeping them soluble and plant-available in soils up to pH 7.0. Unlike iron sulfate which quickly becomes locked up in neutral soils, EDTA chelation prevents iron from reacting with calcium, phosphates, and other soil components. This makes EDTA 3-5x more effective than iron sulfate in most garden conditions.
When should I use EDTA instead of DTPA or EDDHA?
Choose EDTA when your soil pH is between 4.0 and 7.0—this covers most home gardens, lawns, and container plants. EDTA is the most cost-effective chelate and has the highest iron concentration (13%). If your soil pH is 7.0-7.5, switch to Iron DTPA. For very alkaline soils above pH 7.5, use Iron EDDHA. When in doubt, test your soil pH first.
How do I apply iron EDTA for best results?
For fastest results, use foliar spray: 1-2 tsp/gallon for prevention, 1 tbsp/gallon for severe deficiency. Spray early morning or evening when temps are below 85°F, and add a surfactant for better coverage. For longer-lasting correction, combine with a soil drench (1-2 tbsp/gallon) around the root zone. Foliar shows results in 7-14 days; soil applications take 2-3 weeks but last 4-6 weeks.
Which plants benefit most from iron EDTA?
Acid-loving plants are most iron-sensitive: azaleas, rhododendrons, gardenias, camellias, blueberries, and citrus. Also important for roses, petunias, calibrachoa, and many vegetables (tomatoes, peppers, beans). Houseplants in soilless potting mixes often need supplemental iron since peat-based mixes provide little. EDTA is ideal for all these when soil/media pH is below 7.0.
How fast will I see results?
Foliar applications typically show visible greening in 7-14 days. New growth will emerge green, though severely chlorotic older leaves may not fully recover. Soil applications take 2-3 weeks for visible results but provide longer-lasting correction (4-6 weeks). For severe chlorosis, apply foliar spray weekly until new growth is fully green, then switch to monthly maintenance.
What's the best way to use this for hydroponics?
Use the stock solution method: Dissolve 2 oz (57g) in 1 gallon of water to make a concentrate (~1,900 ppm Fe). Then add 1-2 teaspoons of this stock per 10 gallons of reservoir water to achieve 2-5 ppm. This prevents overdosing since direct powder measurement is impractical for the small amounts needed. Keep solution pH at 5.5-6.5—EDTA loses effectiveness above pH 7.0. If your pH tends higher, consider Iron DTPA instead.
Is iron EDTA safe for edible gardens?
Yes, when used as directed. Iron EDTA is widely used in commercial food production and is approved for use on edible crops. Our product is third-party tested for heavy metals and meets safety standards. Apply to soil rather than directly on edible portions close to harvest. The chelate biodegrades naturally in soil.
Pairs Well With
Have Questions?
Our fertilizer experts can help you determine if EDTA is right for your soil conditions and recommend the optimal application strategy.