I am also finding that many succulents - namely, the ones on the summer dormant list, can't take high nighttime temps; they simply rot. Our nights don't get as cool as they used to, here in the concrete jungle, and I have lost a bunch of Senecio, and am on my way to losing a large Aeonium and some Kalanchoes.
Well, I don't like nights in the 90's, either!
