High Voltage Electroculture System
In many situations, installing 25-foot-tall antennas or constructing 11-meter pyramid-shaped greenhouses is either impossible or impractical. In these cases, we need to use active devices. Active electroculture devices operate on similar principles as passive ones (antennas), but instead of harnessing natural electric charges, they rely on a man-made power supply.
For this purpose, we recommend the Lemström System.
In 1885, Finnish scientist Selim Lemström made a ground breaking discovery: electrical discharges from wire points could boost the growth of crops such as potatoes, carrots, and celery by an impressive 40% to 70% within just 8 weeks.
The Lemström System consists of a horizontal grid connected to a high-voltage power source, suspended at a height that allows for efficient plowing, weeding, and irrigation without obstruction. The voltage applied to this grid varies between 2kV and 70 kV depending on the height of the grid, the greater the distance between grid and plants the higher the voltage needed.

In this image you can see the old style high voltage power supply at the left of the wall and the electrified field on the other side. We can use the same idea with a modern high voltage power supply to accomplish the same results.
Here we describe the setup for a field but it can be used the same in a backyard over rows, beds or planters.
Lemström system setup instructions: