Hi there, If you want to know what types of cacti are active... you should do a little more online research.. its not hard to find out, example ------> http://www.shaman-australis.com/~visionarycacti That has a fairly good list of cacti and some details of alkaloid content. As for where to get cacti in WA - this I have no idea... I seem to remember seeing something in the trading section recently... Hope thats a little bit helpful!