Thanks for sharing SWIY's extraction results with us! One option is to take a root with a stem and a few leaves, take it home and cultivate it. Take good care of the plant until it grows big, torture (don't give it water) it for a week or so before harvesting. By doing so, the plant will create more alkaloids. Dry the whole plant (roots, stem and leaves) and do a A/B extraction with defatting (QT's tek!).  More detailed information about P. arundinacea here:    http://peyote.com/jonstef/phalaris.htm