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

https://caidenjlyb942.lowescouponn.com/electroculture-gardening-for-cut-flowers-longer-stems-bigger-heads

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.