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

https://medium.com/@meleenpprz/electro-culture-in-ornamental-gardening-more-blooms-brighter-colors-249ae91cb7fe

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.