They're what made me think I'm going the wrong direction.
Let me ask Yannick about this. He has been in this game for 30 years and will no doubt have some explanation. Have been meaning to ask him this for ages in fact! Will get back to you with his answer.
To know with certainty where your local leylines are you will need to find them yourself using dowsing rods. There are websites but they seem to only cover the major lines and don't look at the Hartmann & Curry lines which are usually found every few meters, creating a grid all over the Earth.
In this post I show you how to make dowsing rods and what I found when I first created mine. Since then I have seen time after time how certain plants don't like to grow on the lines. Particularly where the lines cross. And this includes plants in pots which are being observed for experimental purposes.
For the man in the above video I am blown away by his brain! He obviously has a very hands-on technical background with a lot going on his life. I spent some time watching his films last night and feel as if I have something to say now. His knowledge seems great but he is blocked by general statements like "copper coils are woowoo". What would he say about your spiral garden I wonder? Or my wooden pyramid? All just woowoo? As a technical man with a background in ham radios it is only natural he should build his belief system around items he is familiar with. But I don't agree that yagi antennas are necessarily the holy grail of electroculture as he states. Also, it is strange don't you think that he provides no evidence for his claims, other than the seed/magnet trick he likes to do. Personally I feel drawn to document the evidence for my claims in as clear a way as possible so there can be no doubt when presenting it to the public. And it looks a lot like you are the same. While he prefers to make confident statements without backing them up with evidence.
But don't get me wrong, I have downloaded one of his books and added it to my reading list. And I have subscribed to his YouTube! I like him a lot, but I think there is more to electroculture than he believes.
RE: Electroculture Spiral Garden