For balcony growers, compact coil pots use a small copper helix inserted into the medium
https://daltonbcvh980.cavandoragh.org/diy-electroculture-projects-spirals-rods-and-coils
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.