Thanks for your replies, Hetty and Tarev. I doubt any of the 60 or 70 cuttings are still alive-- I am only at the nursery on Tuesdays and Fridays, so they have been sitting in mud for days now. I'll let you know what happens.
Oh, where I live, we aren't really excited about Plumeria, they're all over the place, because you just cut a stem and poke it into the ground and it grows.