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

https://www.scribd.com/document/1033405803/Combining-Drip-Irrigation-with-ElectroCulture-Smart-Watering-234545

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.