I've grown this in the past, although I don't have it any more. I got mine from Richard Dufresne (see link). You'll need to winter cuttings inside in your zone.

Here is a link that might be useful: World of Salvias

You will have a lot better luck looking for it on Google if you use "San Isidro Moon" and either greggii or jamensis as the other search terms. Not many nurseries are growing it these days. You can keep it in a pot in fast soil, and cool, full sun. It will do well under grow lights.