I can only emphasize that from a harm reduction perspective it is imperative that you know exactly what you're consuming. Plants and particularly mushrooms can be exceedingly difficult to tell apart from potentially dangerous or fatal lookalikes. You really need some specific botanical or mycological knowledge to be safe.
Also, a discussion of psychoactive plants native to a particular area is an appropriate topic for this forum, but absolutely no discussion of sources, etc. will be tolerated.
And furthermore to double down—with all plant drugs, by their very nature, dosage is uncertain. While with, for example, psilocybe spp. mushrooms the worst you're in for is a heavier (potentially bad) trip, things like nightshade/datura plants can do far worse, including kill you, if you overshoot the mark, so it's also important to be very conservative regarding dosing.