Now that's a thread I'm interested in! I know Phelan can be quite an oven in summer (I visited there in spring and it was already hot). Same here, in Riverside. I currently keep my Hoyas indoors. My entire dining table is now a Hoya kingdom. All the plants we have outside have been scorched by the hot sun or just the super-hot air. Still, one of my plumies bloomed for me this year, JJ Super Round. The others not yet, I guess the heat got them really strong.
I want to know, for real, is it better to get potted/rooted Hoyas or cuttings to root? How does it work: is a cutting without the "memory" of the old place and once rooted will thrive in the new place? Or a rooted one will have more "juice" in it to make it?
I've had not a very good experience with Hoyas shipped over the country, especially in summer. Some of them arrived pretty badly shaken and some died soon after arrival. I still managed to root several, and I still have a whole troop of cuttings rooting now. Don't you know any nurseries in SoCal that carries Hoyas? I guess getting them from the same climate grower would be helpful.
Please keep us updated with pics of your new Hoyas.