Awesome photos. I'll be visiting the US and be driving from SF to Las Vegas this weekend. Would you recommend making the detour to Carrizo to see the bloom, or am I too late to the party?
I think you are borderline too late. I was too late for a lot of the blue-ish flowers. I suspect it will still be impressive, similar to my photos (which are jpegs right off the camera, no changes to the saturation/contrast settings).
That said, if this is your one chance and since you are going right by there, hell yes, go check it out. If it is at all decent it's so worth it.