jeh,
Are these newer plants or older, well-established ones? The first couple of years they need a little bit of tlc to make it through our summers but, afterwards, they are pretty tough plants (I downright neglect mine). I had these out of the ground for 3 weeks or so last month (some still have not been replanted) and they still decided to bloom:
Oddly enough, the ones that are still on the concrete look about the same as the photo (we do sprinkle them lightly everyday) but the ones that are back in the soil are experiencing some shock.
Edited to add: I forgot to say that I am in So Cal, also, near the LA county/Ventura county lines.