What’s the mechanism proposed to be at action here? Sounds like no downside to trying anyway.
What are your thoughts on copper coils? I have heard these were Tesla inventions .
https://www.instagram.com/reel/DGouewBOVMo/?igsh=bzdpeHUzOHgwMDAw
Discussion
Have you seen the price of copper‽ lol
I looked into negative ion collection, it does benefit plants. How much is being accepted by the antenna might be minimal. From what I found having running water closer to your plants will probably provide better levels.