Gardeners experiment with copper or zinc wires wrapped around wooden stakes

https://www.scribd.com/document/1023748709/Electroculture-for-Pollinator-Friendly-Gardens-Attract-Bees-and-Butterflies-225347

Gardeners experiment with copper or zinc wires wrapped around wooden stakes, forming vertical antennas that channel subtle electrical potentials into soil, reportedly enhancing root development and nutrient uptake.