A basic setup involves a wooden pole, a copper spiral winding upward, and a grounding spike or buried wire
https://thrivegarden.com/pages/what-are-the-continuous-costs-of-maintaining-electroculture-garden-system
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.