So I go away for a couple days, come back, and see two withering cactus flowers and three brand new flowers open towards the heavens! They've started appearing a month later this year than last. They're still just as beautiful as ever. I'll have to keep an eye out for future flowers to see what kind of timelapse trickery can be done. But for now, enjoy the first flowers of 2008.
If you're new here, or just nostalgic, you might enjoy checking out 2007's Cactus Cam project.