A basic setup involves a wooden pole, a copper spiral winding upward, and a grounding spike or buried wire

https://elliottikwh655.trexgame.net/electro-culture-and-biodiversity-supporting-pollinators-with-proper-setup

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.