San Pedro is a very easy to cultivate cacti. It can be grown from seeds and cuttings. Growing them from seeds goes in the same way as with Peyote .
Seeds are here available.
To grow them from cuttings is simple. Just cut the cacti in pieces of about 4cm length and leave these pieces for about one or two weeks, in this time the wound will heal, a callus is formed. Once the wound is dry and something like a skin has formed, the cutting is ready. Often it is hard to see what is the top or bottom, in that case just plant it on its side. If it is clear, what is the top, then plant the cutting straight up, half in the earth.