Plant vigor machines and methods for enhancing plant vigor are disclosed. The machine comprises a corona discharge cell to create an electrical discharge across an air gap. An electrode to generate copper ions. An air conveyance mechanism to pass air through the corona discharge cell to produce enriched air combined with the copper ions wherein the enriched air comprises oxygen O2 and nitrogen dioxide NO2. An air infuser mechanism to infuse water with the enriched air combined with the copper ions to create enriched water wherein the enriched water comprises the oxygen O2, the copper ions, and nitrate radical NO3. A water conveyance mechanism couple with the air infuser to convey the water to air infuser mechanism and to convey the enriched water away from the air infuser mechanism to a plant to enhance a vigor of the plant.