I’m not sure you’d be able to cultivate most of these on your own (legally), I read Plants of the Gods at university. It was fascinating.
Edit: it doesn’t look like the link I added worked. The book is by Richard Evans Schultes, Albert Hoffman, and Christian Ratsch.
Terrence McKenna spoke about it, as did Schults, Hofman, and Ratsch in Plants of the Gods.
Soma is an entirely different matter, and my guess is that it is Amanita muscaria or possibly cubensis.
If you want to support the author(Richard Evans Shults) of this out of print book you can purchase their newer updated guide in Plants of the gods.(written by himself, Albert Hoffmann, and Christian Rätsch.
https://www.amazon.com/Plants-Gods-Sacred-Healing-Hallucinogenic/dp/0892819790 new updated version for a $20 bill
If you want to support the author(Richard Evans Shults) of this out of print book you can purchase their newer updated guide in Plants of the gods.(written by himself, Albert Hoffmann, and Christian Rätsch.