Chelated Copper EDTA Fertilizer - 14% Cu
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Chelated Copper EDTA Fertilizer
Premium chelated copper with 14% Cu-EDTA for superior bioavailability. This professional-grade micronutrient prevents and corrects copper deficiencies that cause chlorosis, weak stems, and reduced yields. EDTA chelation ensures stability across pH 4-9, providing 3-5x better absorption than copper sulfate.
Deficiency Correction Timeline
Day 1-3 💧 Apply & Absorb
Week 1 🌱 New Growth
Week 2-3 🌿 Green Returns
Week 4+ 💪 Full Recovery
Perfect For These Applications
Field Crops
2-4 lbs/acre
Foliar Spray
0.5-1.5 lbs/acre
Trees & Vines
0.5-2 oz/inch
Hydroponics
0.05-0.20 ppm
Common Copper Deficiency Problems? We've Got Solutions
😟 Young leaves turning yellow?
✅ 14% chelated copper restores green color fast
😟 Twisted or malformed new growth?
✅ Essential for proper enzyme function and growth
😟 Weak stems and poor lignification?
✅ Copper strengthens cell walls and stem structure
😟 High pH soil locking nutrients?
✅ EDTA chelation works across pH 4-9
🛡️ 14% Chelated Copper
High concentration means lower application rates and more efficient correction of deficiencies
⚡ EDTA Chelation
Superior stability across pH 4-9, preventing precipitation and ensuring availability
💧 100% Soluble
Completely dissolves for soil, foliar, fertigation, and hydroponic applications
🔍 Copper Deficiency Signs
Note: Copper is immobile in plants—symptoms appear on new/young growth first while older leaves may remain green.
🍃
Chlorosis
Young leaves turn pale green to yellow
🌀
Twisted Growth
New leaves curl and distort
☠️
Tip Dieback
Growing points die back first
🦴
Weak Stems
Poor lignification, lodging
⏰
Delayed Maturity
Late flowering and ripening
🦠
Disease Prone
Increased susceptibility
⚠️ Important Safety & Application Guidelines
- Always conduct soil or tissue tests before application
- Do not exceed recommended rates—copper can be toxic in excess
- Avoid application during bloom on sensitive crops
- Jar test before mixing with other products
- LIVESTOCK WARNING: Do not apply in areas grazed by sheep. Copper is highly toxic to sheep even at moderate levels
- Store in cool, dry place away from children and pets
Quick Dosage Guide
Select an application type above
Features & Quality Guarantee
- 14% Chelated Copper: High concentration for efficient application
- EDTA Chelation: Stable across pH 4-9 range
- 100% Water Soluble: No residue, complete dissolution
- 3-5x More Effective: Superior bioavailability vs copper sulfate
- Tank Mix Compatible: Works with most fertilizers (always jar test first)
- Professional Grade: Commercial grower quality
- CDFA Registered: California Department of Food & Agriculture
- Made in USA: Manufactured in-house at our California facility
- Heavy Metal Tested: Third-party tested for purity
- 90-Day Guarantee: Full refund if not satisfied
Mixing Instructions
📋 Proper Mixing Procedure
Follow this order for best results and to prevent equipment issues:
- Fill tank 2/3 with water before adding any products
- Add Chelated Copper EDTA and agitate until fully dissolved
- Continue filling while agitating
- Add other products last (if tank mixing)
💡 Measuring Guide (Chelated Copper EDTA):
| 1 teaspoon | ≈ 4.8 grams |
| 1 tablespoon | ≈ 14.4 grams |
| ¼ cup | ≈ 57.5 grams |
| ½ cup | ≈ 115 grams |
| 1 cup | ≈ 230 grams |
For precise applications, use a digital scale.
🧪 Tank Mix Compatibility
EDTA chelation makes this product compatible with most fertilizers and pesticides. However:
- Always perform a jar test before large-scale mixing
- Do not mix with highly alkaline products (pH >10)
- Do not mix with products containing high calcium concentrations
- If precipitation occurs, do not use the mixture
Application Rates & Timing
Always conduct soil or tissue tests to determine actual copper needs. Below are general guidelines.
🌱 Soil Application
| Crop Type | Rate | Notes |
|---|---|---|
| Vegetables | 2-4 lbs/acre | Apply pre-plant or side-dress |
| Field Crops | 2-4 lbs/acre | Broadcast or band |
| Trees & Vines | 2-5 lbs/acre | Apply to root zone |
| Turf | 0.5 lb/1000 sq ft | Water in thoroughly |
🍃 Foliar Application
| Crop | Rate | Notes |
|---|---|---|
| Citrus/Nuts (hardy) | 1-1.5 lbs/acre | 25+ gal water/acre |
| Trees/Vines | 0.75-1.5 lbs/acre | 25+ gal water/acre |
| Vegetables (sensitive) | 0.5-1 lb/acre | Use lower rate to avoid phytotoxicity |
| Turf | 1 tbsp/1000 sq ft | Thorough coverage |
💧 Hydroponics & Fertigation
⚠️ Important: Copper is required in very small amounts. Direct measurement of dry powder is impractical for hydroponics. Use the stock solution method below.
| Step | Instructions |
|---|---|
| 1. Make Stock Solution | Dissolve ½ cup (115g) in 1 gallon of water Creates ~4,250 ppm Cu concentrate |
| 2. Apply to Reservoir | Use ½-1 teaspoon of stock per 100 gallons Achieves 0.05-0.10 ppm Cu |
| 3. For Higher Rates | Use 1½ teaspoons per 100 gallons Achieves ~0.15 ppm Cu |
Target ranges: 0.05 ppm (maintenance) • 0.10 ppm (standard) • 0.15-0.20 ppm (deficiency correction)
🌳 Individual Trees
| Tree Size | Rate per Inch | Annual Maximum |
|---|---|---|
| Young (1-3") | 0.5 oz/inch | 2 oz total |
| Medium (4-8") | 1 oz/inch | 8 oz total |
| Large (9"+) | 1.5-2 oz/inch | 20 oz total |
Copper Calculator
Compare With Other Copper Sources
| Feature | Copper EDTA | Copper Sulfate | Copper Oxide |
|---|---|---|---|
| Copper % | 14% | 25% | 75% |
| Water Solubility | 100% | Moderate | Insoluble |
| pH Stability | 4-9 | Below 6.5 | Limited |
| Bioavailability | Excellent | Good | Poor |
| Speed of Action | Fast | Moderate | Very Slow |
| Tank Mix Compatible | Yes | Limited | No |
| Phytotoxicity Risk | Low | Moderate | Low (poor uptake) |
Quick Reference Guide
📋 Application Quick Reference
Field Crops:
2-4 lbs/acre
Broadcast or band
2-4 lbs/acre
Broadcast or band
Foliar:
0.5-1.5 lbs/acre
25+ gallons water
0.5-1.5 lbs/acre
25+ gallons water
Trees:
0.5-2 oz/inch diameter
Apply to root zone
0.5-2 oz/inch diameter
Apply to root zone
Hydroponics:
Stock solution method
Target 0.05-0.20 ppm
Stock solution method
Target 0.05-0.20 ppm
Documents
Frequently Asked Questions
What is chelated copper EDTA?
Chelated copper EDTA is copper bonded with EDTA (Ethylenediaminetetraacetic acid), creating a protected form that remains available to plants across pH 4-9. It's 3-5x more effective than copper sulfate because the chelation prevents copper from becoming locked up in the soil.
How do I know if my plants need copper?
Since copper is immobile in plants, symptoms appear on new/young growth first while older leaves remain green. Signs include: young leaves turning pale green/yellow (chlorosis), twisted or malformed new growth, dieback of growing tips, weak stems, delayed maturity, and increased disease susceptibility. Soil tests below 0.2 ppm or tissue tests below 5 ppm indicate deficiency.
Why is EDTA chelation better than copper sulfate?
EDTA chelation offers: pH stability (4-9 vs. 6.5 for sulfate), no precipitation with phosphates, 3-5x better plant absorption, longer soil availability, superior tank mix compatibility, and lower phytotoxicity risk than sulfate forms.
What's the application rate for hydroponics?
For hydroponics, use the stock solution method: dissolve ½ cup (115g) in 1 gallon of water, then use ½-1 teaspoon of this concentrate per 100 gallons of reservoir water to achieve 0.05-0.10 ppm. Direct measurement of dry powder is impractical because the amounts needed are too small (less than 0.3 grams per 100 gallons).
Can I mix it with other products?
Yes! EDTA chelation makes it compatible with most fertilizers and pesticides. Always jar test new combinations first. Fill your tank 2/3 with water, add and dissolve the copper EDTA first, then add other products. Do not mix with highly alkaline products (pH >10) or high-calcium solutions.
Is this product safe for all livestock?
No—copper is highly toxic to sheep. Do not apply in areas where sheep graze, and prevent runoff into sheep pastures. Cattle and other livestock have higher copper tolerance but should not have direct access to treated areas until product is watered in and dry.
Is this product organic?
EDTA is a synthetic chelating agent, so this product is not OMRI-listed for certified organic production. For organic operations, consider copper sulfate (with restrictions) or other approved copper sources. This product is excellent for conventional, hydroponic, and IPM programs.