Chelated Copper EDTA Fertilizer 14% Cu
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Targeted copper nutrition for a confirmed need
Chelated Copper EDTA · 14% Cu
A water-soluble copper fertilizer for measured soil applications and professionally balanced nutrient solutions. Supply an essential micronutrient without guessing at the dose.
- 14% CuCopper by weight
- EDTA chelatedThe label lists all 14% Cu as chelated
- Measure by weightSmall copper doses need accurate measurement
Use only when copper is needed. Deficiency symptoms alone do not establish the diagnosis; excess copper can injure plants and accumulate in soil.
Product facts & composition
| Property | Details |
|---|---|
| Copper (Cu) | 14.0% |
| Chelated copper | 14.0% |
| Derived from | Copper ethylenediaminetetraacetate (copper EDTA) |
| Form | Blue to blue-green, water-soluble powder or granules |
| Primary purpose | Copper nutrition; not a complete nutrient formula |
| Current package options | 1, 2, 5, and 25 lb; see the size selector for current availability |
Guaranteed analysis is taken from the linked product label. Solubility does not guarantee that every fertilizer mixture will remain clear.
Best uses & benefits
Soil-grown crops
Supply copper to vegetables, field crops, trees, or vines when soil or tissue testing supports treatment. Copper deficiency is more likely in some organic and sandy soils, but soil type alone is not a diagnosis.
Measured nutrient solutions
Use as an individual copper source in a complete hydroponic or fertigation recipe. Check the copper contribution from your base fertilizer first.
Copper supports photosynthetic electron transport and enzyme systems involved in plant growth. Adding extra copper to plants that already have enough is not a general growth-boosting program.
Application rates & directions
| Crop group | Product per 1,000 sq ft | Metric weight for the same area |
|---|---|---|
| Vegetables and field crops | 0.8–1.2 oz | 22.7–34.0 g |
| Tree and vine crops | 0.8–1.6 oz | 22.7–45.4 g |
These are directions from the linked Greenway label, not universal university rates. Select a rate for your crop and confirmed deficiency with qualified guidance. Measure the area actually treated, spread uniformly, and water in. Do not put a whole-area dose beside one plant or add automatic repeat applications.
Individual fruit and nut trees or vines
Equivalent 14% copper EDTA manufacturer directions list 0.5–2 oz product per inch of trunk diameter. Distribute uniformly on soil beneath the drip line and water in; do not pile product against the trunk. The calculator uses the tree count and average trunk diameter to show the complete range. Use the lower end unless a crop-specific soil or tissue interpretation supports more.
Foliar applications
| Crop group | Product rate | Minimum spray volume and timing |
|---|---|---|
| Vegetable and field crops | ⅓–1⅓ lb/acre | At least 25 US gal/acre; thorough coverage |
| Trees and vines, excluding citrus | 1–2 lb/acre | At least 25 US gal/acre; dormant/delayed dormant before bloom, then after full bloom at 2–3 week intervals as needed |
| Deciduous crops with fruit present | 1 lb/acre | 50–100 US gal/acre |
| Citrus | 1–2 lb/100 US gal of cover spray | Any time except during bloom |
These rates come from manufacturer directions for the same 14% copper EDTA analysis. Buffer the final spray to pH 6–6.5, apply enough spray for thorough coverage, avoid moisture-stressed plants, and test a small area first. Confirm the renewed Greenway label carries these directions before treating.
Hydroponic and fertigation calculations
No single copper concentration fits every crop and nutrient program. Use the target in your complete recipe and subtract copper already present in the final solution. Do not add copper to a complete fertilizer by habit.
Weigh the product. Cup and teaspoon weights have not been established for this material. The calculator uses grams, ounces by weight, liters, and milliliters.
How to use
- Confirm the needUse a crop-specific soil or tissue interpretation. For hydroponics, review water analysis and the complete recipe.
- Measure what you knowCount individual trees and measure trunk diameter, measure the treatment area, or enter the final spray volume for citrus. The calculator supplies the applicable range.
- Weigh and apply accuratelyUse accurate equipment. Spread soil doses uniformly and water in. For nutrient solutions, dissolve separately and combine only in a compatible dilute mixture.
- Record and reassessRecord product amount, area or volume, and date. Review testing and plant response before another treatment.
Prepare a 1.00 g/L measuring stock for nutrient recipes
Dissolve 1.00 g product in water, then make up to exactly 1,000 mL final stock volume. Each mL contains 0.14 mg Cu. Required stock mL = additional Cu needed (mg/L) × final reservoir liters ÷ 0.14. Label the container with product, concentration, and preparation date; secure it away from children and animals. Use suitable graduated equipment. This is a measuring method, not a crop-rate recommendation.
Calculate your amount & choose a size
Choose what you are treating, then enter information customers normally know: tree count and trunk diameter, treatment area, or final spray volume. The calculator applies the applicable product range automatically. Only the advanced hydroponic setting requires a professionally selected recipe target.
The calculator loads here. For one apple tree, choose “Individual fruit or nut tree / vine,” enter 1, and enter its trunk diameter. The result will show the starting amount, full manufacturer range, how to apply it, and an available bag.
When available, the tool selects the smallest in-stock package covering the upper end of the displayed range. Larger needs may require multiple bags. The recommendation uses current product sizes and prices.
How copper EDTA works
EDTA binds copper in a soluble complex. This changes its reactions with other substances, but it does not prevent every form of precipitation, soil binding, or nutrient interaction. Soil pH, organic matter, competing ions, and the application method all influence performance.
Copper has limited mobility within plants, so deficiency often affects young tissues. Similar symptoms can arise from other problems. Laboratory interpretation helps separate a copper shortage from root stress or another nutrient issue.
Soil copper can remain for years. A past copper fertilizer or copper-containing pesticide program matters when deciding whether additional copper is appropriate.
Compare your options
| Option | When it may fit | Important limit |
|---|---|---|
| Copper EDTA | A measured chelated source for a compatible nutrient program | Not automatically superior in every soil; still contributes to total copper loading |
| Copper sulfate | An effective, often economical soil copper source when recommended for the crop | Use its own analysis and directions; do not substitute equal product weights |
| A complete micronutrient blend | Several confirmed micronutrient needs or an established complete recipe | May already supply all needed copper |
| No additional copper | Testing and the existing fertilizer program show adequate copper | Avoid extra copper as preventive maintenance |
Handling, storage & limitations
- Keep sealed in a cool, dry place. Avoid dust and contact with eyes and skin; use gloves and eye protection.
- Keep away from children, animals, feed, and drinking water. This product is not for human or animal consumption.
- Prevent spills and runoff from reaching waterways. Do not apply excess copper or schedule repeated treatments without reassessing the need.
- Sheep are especially susceptible to copper poisoning. Do not use on sheep grazing areas without a livestock-specific assessment. Watering in and drying do not establish a safe grazing interval.
- This is a nutritional fertilizer, not a fungicide, algaecide, or general disease treatment.
For handling and first-aid directions, read the Safety Data Sheet. If swallowed, rinse the mouth and seek poison-center or medical advice; do not induce vomiting unless directed by a medical professional.
Frequently asked questions
What is Chelated Copper EDTA 14% Cu?
It is a water-soluble micronutrient fertilizer containing 14% copper, with the copper chelated by EDTA. Use it to supply copper where testing or a professionally designed nutrient program establishes a need. It is not a complete fertilizer, fungicide, or animal-feed supplement.
How do I know whether my plants need copper?
Copper deficiency can affect young growth, causing distorted leaves, weak growth, or tip dieback. These symptoms have other possible causes. Have a laboratory interpret soil or tissue results for your crop, sampling stage, and test method before applying copper. There is no single soil-test cutoff that applies to every crop and laboratory method.
How much copper EDTA should I apply to soil?
The linked Greenway label lists 0.8–1.2 oz of product by weight per 1,000 sq ft for vegetables and field crops, and 0.8–1.6 oz per 1,000 sq ft for tree and vine crops. These equal approximately 22.7–34.0 g and 22.7–45.4 g, respectively. Use a rate selected for a confirmed need, distribute it over the measured treatment area, and water in. These are product-label directions, not universal university recommendations. Do not schedule repeat applications without reassessing the need.
How much Chelated Copper EDTA should I use for one apple tree?
Equivalent 14% copper EDTA manufacturer directions list 0.5–2 oz of product per inch of trunk diameter for an individual tree. For example, a 4-inch-diameter apple tree has a 2–8 oz product range. Unless crop-specific soil or tissue interpretation supports more, begin at the lower end. Spread the measured amount uniformly on soil beneath the drip line, keep it away from the trunk, water it in, and reassess before repeating.
Can I use this copper fertilizer in hydroponics?
It can supply copper as one ingredient in a complete nutrient recipe. First account for copper in your source water and base fertilizer. The calculator converts a professionally selected total copper target into an additional dose; it does not diagnose a deficiency or select the correct target for your crop. An EC or TDS meter cannot measure copper separately.
How do I prepare a measurable copper stock solution?
Weigh 1.00 g of this 14% Cu product, dissolve it in water, and make up to exactly 1,000 mL final stock volume. Each mL contains 0.14 mg copper. Required stock mL = additional copper needed in mg/L × final reservoir liters ÷ 0.14. Use accurate weighing and graduated liquid equipment. Label the stock clearly, keep it secured, and do not use household spoon estimates.
Can I use copper EDTA as a foliar spray?
Yes. Directions adapted from an equivalent 14% copper EDTA manufacturer label list 1/3–1 1/3 lb per acre for vegetable and field crops and 1–2 lb per acre for non-citrus tree and vine crops, using at least 25 gallons of spray per acre. For deciduous crops with fruit present, use 1 lb per acre in 50–100 gallons. For citrus, use 1–2 lb per 100 gallons of cover spray, except during bloom. Buffer the final spray to pH 6–6.5, avoid moisture-stressed plants, and test a small area first. Confirm these directions appear on the renewed Greenway label before use.
Is copper EDTA always better than copper sulfate?
No. Both can supply copper, and copper sulfate can be an effective, economical soil source. EDTA binds copper and changes how it behaves in solution and soil, but performance depends on the crop, soil, water chemistry, and application method. A fixed absorption advantage or a guaranteed field pH range should not be assumed.
Can I mix copper EDTA with other fertilizers?
Compatibility depends on the complete formulation, concentration, water quality, and pH. Follow each product’s directions, dissolve ingredients separately, and use compatible dilute solutions. Jar-test unfamiliar mixtures at the intended concentrations; a clear jar does not establish crop safety. Do not assume compatibility in concentrated phosphate or sulfate stock tanks.
Is copper EDTA safe around sheep and other animals?
Keep the fertilizer and stock solutions away from animals, feed, and drinking water. Sheep are especially susceptible to copper poisoning. Do not use on sheep grazing areas without a livestock-specific assessment from your veterinarian or agronomist. Watering in or drying does not establish a safe grazing interval. This product is not for human or animal consumption.
Is this a fungicide or an organic fertilizer?
This product is sold for plant nutrition, not disease control. Do not use it as a fungicide or algaecide. EDTA is a synthetic chelating agent; do not assume eligibility for certified organic production. Organic growers should obtain product-specific approval from their certifier before use.
Related guides & articles
Greenway growing articles
Sulfate vs. chelated fertilizers
Compare fertilizer forms and the soil conditions that affect micronutrient availability.
Read the chelated fertilizer comparisonEssential plant micronutrients
Review the roles and common deficiency symptoms of copper and other trace nutrients.
Read the micronutrient guideCopper sulfate in the garden
Learn about a different copper source and its distinct use categories. Copper sulfate directions do not transfer to copper EDTA.
Read the copper sulfate articleArticles provide background information. For this product, use the directions and documents on this page.
Independent references
Copper deficiency, testing & soil response
University of Minnesota Extension explains where copper deficiency occurs, how testing helps, and why excess copper is a concern.
Read Copper for crop productionBuilding a complete hydroponic recipe
University of Missouri Extension explains water testing, nutrient calculations, and what EC monitoring can and cannot tell you.
Read Hydroponic Nutrient SolutionsProduct documents & sources
Product documents
- Greenway Chelated Copper EDTA label (PDF; reviewed August 2021) — guaranteed analysis and the soil directions reproduced above.
- Chelated Copper EDTA 14% SDS (PDF; December 2025) — handling, storage, and first aid.
Check the label on your package. Ask us about any differences before applying.
Independent reference material
- University of Minnesota Extension: Copper for crop production
- University of Wisconsin: Soil and Applied Copper, A2527 (PDF) — crop and soil context; rates are not interchangeable across analyses.
- University of Missouri Extension: Hydroponic Nutrient Solutions
- Cornell Cooperative Extension: Tips for Avoiding Copper Toxicity in Sheep
These sources explain nutrient management. They do not certify or endorse Greenway’s product. The Greenway label remains the controlling product document.
Help choosing & next step
Have your crop, growing method, soil or tissue results, and treatment area or reservoir volume ready. For nutrient solutions, include the other fertilizers and water analysis.
For product or document questions, contact Greenway Biotech. Choose the package weight in the product’s size selector, or use the calculator’s available-bag recommendation.
