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

https://kameronotff660.theburnward.com/electro-culture-the-interplay-of-light-electricity-and-growth

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.