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

https://medium.com/@tucanefutf/electroculture-for-native-plant-gardens-respecting-local-ecologies-1558d94f8961

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.