Aussies will grow quite readily here and my friend who had a nursery here until two years ago grows a lot of them...however, she had never encountered the petersonii. There is a new nursery here and though he grows mostly standard stuff for this area, he is receptive to new things, especially since Rebecca had given a lot of Aussies to the Garden Club for their Botanical Garden and these gardeners are now knowledgeable about other plants that will grow here. Her Uncle, who is 90 years old, also is a great fan of the Aussie plants and grows a lot, constantly scattering seed over his extensive property to encourage naturalizing.
Mine would have come from San Marcos Growers.
Yes, the destruction of natural, wild vegetation is also troubling to me. Since we've moved up here to the far Northwestern corner of California, I'm constantly astounded by the vegetation I find alongside all of the roads, etc. I find that I'm very often asking, "What IS that?"....lol..