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

https://www.scribd.com/document/1026625435/Electroculture-101-Unlocking-Plant-Growth-with-Electricity-147005

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.