For balcony growers, compact coil pots use a small copper helix inserted into the medium

https://josuejqpk709.iamarrows.com/electroculture-with-chickens-integrating-coop-and-garden-systems

For balcony growers, compact coil pots use a small copper helix inserted into the medium, aiming to localize subtle charges near roots without requiring tall poles or complex grounding arrangements.