So I want to grow magic mushrooms. where can I order them that will ship to the usa. Is the risk just like ordering weed seeds? Also I am interested in some cacti. Any info will be appreciated.
Well, you might start by googling "mushroom spores". You can try searching for "spore prints" or "grow box", depending on the method that you plan on using. If you're unsure of the process of growing mushrooms, you might want to research that as well, or else your grow will fail, and you will be out some money. Shipping such things to the US does carry the risk of being confiscated, but the worst that will happen is that you'll get a love letter from customs saying that they took your package. I don't believe the spores are actually illegal though, as the carry no psilocybin, or other psychoactive compounds. I haven't had problems ordering spores or kits to the US. Just search for a bit on google and you'll find what you're looking for, it's not difficult.
Icky is right. A former roomate of mine grew shrooms. Fun experience, too bad I couldn't stick around and trip with um though...