...Other plants that died in the same period were a chempedak hybrid and a young peanut butter fruit.
Hah maybe I can use this to finally figure out which of my jackfruit trees that lost their label is the Cheena (chempedak x jackfruit hybrid). The one that dies is it!

I still have my 20gal peanut butter fruit tree outside in the 40s. It seems to be okay so far. That is one for the next round for when we break into the 30s.
I have some "test plants" that I don't care so much about that I can use to judge how cold it really got outside as the weather reports are not very reliable. A tomato volunteer growing in the mulch pile, a starfruit seedling-rootstock whose scion had long died, and some excess seedlings that aren't worth the effort to try selling.