EDTA-Chelated Copper for Hydroponic, Fertigation & Foliar Use

Copper EDTA 15% is a fully water-soluble chelated copper fertilizer delivering 15% copper (Cu) complexed with EDTA for maximum stability and plant availability. A blue-green fine powder sold in a resealable screw-top jar — ideal for small-scale growers, home hydroponic systems, and trial use before scaling up.

Copper drives enzyme activation, photosynthesis, and lignin synthesis. EDTA chelation keeps copper in a plant-available form at the low concentrations required in nutrient solutions, reducing the risk of toxicity while ensuring consistent uptake.

Product Specifications

• Copper (Cu): 15% chelated with EDTA
• Formula: EDTA-CuNa₂
• Molecular weight: 397.7
• Appearance: Blue / blue-green powder
• Water insoluble: 0.05% maximum
• pH (1% solution): 6.0–7.5
• Target range in nutrient solution: 0.01–0.1 ppm Cu

Application Rates

• Hydroponic / constant-feed: Use at rates to achieve 0.01–0.1 ppm Cu in working solution; consult a qualified agronomist for crop-specific rates
• Foliar & fertigation: Apply per label recommendations; use in accordance with guidance from a qualified individual or institution

Key Features

• 15% chelated copper — high-analysis EDTA chelate; efficient Cu delivery at very low use rates
• Broad pH stability — maintains copper availability across a wide solution pH range
• Fully water soluble — 0.05% max water insoluble; no precipitates or injector clogging
• Resealable screw-top jar — keeps contents dry; easy to measure and store
• 1 lb size — ideal for home growers, small systems, and product trials

State restrictions: Not available for shipment to Oregon.

Use in accordance with recommendations of a qualified individual or institution. Safety Data Sheet (PDF)