Echeverias began as desert species, where they adapted to extreme heat by day, and extreme cold at night. They tend to grow in the shade of rocks, etc. not in the full intensity of the summer sun. I have grown some of mine in the full sun, but I find that in the sub-tropics,they grow much better in bright, partly-shady spots. One thing that plants don't like, is when there is a long series of mild days, followed by a sudden change to a mid-40C temperature. This infrequent event tends to burn the leaves which looks unsightly for a while, but doesn't usually kill the plant. I said they were hardy. This weather event has killed many other varieties of plant in our garden, but not one Echeveria. To summarise, heat is not a problem, but in extreme UV situations, sunscald can become unsightly, if they are exposed to the mid-day Australian summer sun. A general rule of thumb is: If roses can be grown in your area, so can hybrid Echeverias. c l o s e