Well, for two weeks basically nothing outside my house was watered (thanks to the 19 year old more interested in making our dogs fat and playing games 20 hours a day and reprogramming my thermostat). My Cereus is thriving, plumis were definitely wilting (but perked right back up after a good soaking) tomatoes are dead, some epis are doing fantastic (I need to divide one - it's outgrowing its pot!) my hibiscus are probably toast, brugs are surviving (barely) plumbago is pretty crunchy but still alive somehow, and the lantana is still alive with no problems.
It looks like one of my rose beds is a lost cause. The other is definitely not at the top of it's livelihood so I'll probably go out and fertilize this evening. I'm afraid to look to close at anything else out there.