API Leaf Zone is a fertilizer that has been developed by the leading name in plant nutrition, API. It is designed to provide maximum leaf growth and overall healthy plants with its blend of macro and micronutrients. The product contains nitrogen, phosphorus, potassium, magnesium sulfate and iron chelate. While it does not contain copper specifically, it does contain iron chelate which contains traces of copper as an additional mineral component. This means that while the product itself may not have high levels of copper content directly from API Leaf Zone itself, over time your plants will be receiving small doses of this essential trace element due to its presence in the iron chelate present in the mixture.