A basic setup involves a wooden pole, a copper spiral winding upward, and a grounding spike or buried wire
https://ericklmzx545.lowescouponn.com/diy-electroculture-simple-circuits-for-the-home-grower
A basic setup involves a wooden pole, a copper spiral winding upward, and a grounding spike or buried wire, positioned near crops to capture atmospheric ions and gently influence local electrostatic conditions.